chore: update lance dependency to v9.0.0-beta.16

2026-08-27 08:28:28 +00:00 · 2026-07-06 21:10:10 +00:00
61 changed files with 198 additions and 2894 deletions
@@ -1,5 +1,5 @@
 [tool.bumpversion]
-current_version = "0.32.0-beta.0"
+current_version = "0.31.0-beta.6"
 parse = """(?x)
    (?P<major>0|[1-9]\\d*)\\.
    (?P<minor>0|[1-9]\\d*)\\.
@@ -1,21 +0,0 @@
-# CODEOWNERS
-#
-# These owners will be the default owners for everything in the repo.
-# They will be requested for review when someone opens a pull request.
-#
-# See https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
-
-# Default owners for everything
-* @jackye1995 @wjones127
-
-# Release and publish workflows — changes here can affect supply chain security
-/.github/workflows/ @jackye1995 @wjones127 @Xuanwo
-
-# Remote client and auth — sensitive networking and auth code
-/rust/lancedb/src/remote/ @jackye1995 @wjones127
-
-# Python FFI boundary
-/python/src/ @jackye1995 @wjones127 @AyushExel
-
-# NodeJS FFI boundary
-/nodejs/src/ @jackye1995 @wjones127
@@ -34,16 +34,15 @@ runs:
        maturin-version: "1.12.4"
        command: build
        working-directory: python
-        docker-options: "-e PIP_EXTRA_INDEX_URL='https://pypi.fury.io/lance-format/ https://pypi.fury.io/lancedb/' -e PROTOC=/usr/local/bin/protoc"
+        docker-options: "-e PIP_EXTRA_INDEX_URL='https://pypi.fury.io/lance-format/ https://pypi.fury.io/lancedb/'"
        target: x86_64-unknown-linux-gnu
        manylinux: ${{ inputs.manylinux }}
        args: ${{ inputs.args }}
        before-script-linux: |
          set -e
-          curl -fsSL https://github.com/protocolbuffers/protobuf/releases/download/v24.4/protoc-24.4-linux-x86_64.zip -o /tmp/protoc.zip
-          unzip /tmp/protoc.zip -d /usr/local
-          rm /tmp/protoc.zip
-          /usr/local/bin/protoc --version
+          curl -L https://github.com/protocolbuffers/protobuf/releases/download/v24.4/protoc-24.4-linux-$(uname -m).zip > /tmp/protoc.zip \
+            && unzip /tmp/protoc.zip -d /usr/local \
+            && rm /tmp/protoc.zip
    - name: Build Arm Manylinux Wheel
      if: ${{ inputs.arm-build == 'true' }}
      uses: PyO3/maturin-action@v1
@@ -51,14 +50,13 @@ runs:
        maturin-version: "1.12.4"
        command: build
        working-directory: python
-        docker-options: "-e PIP_EXTRA_INDEX_URL='https://pypi.fury.io/lance-format/ https://pypi.fury.io/lancedb/' -e PROTOC=/usr/local/bin/protoc"
+        docker-options: "-e PIP_EXTRA_INDEX_URL='https://pypi.fury.io/lance-format/ https://pypi.fury.io/lancedb/'"
        target: aarch64-unknown-linux-gnu
        manylinux: ${{ inputs.manylinux }}
        args: ${{ inputs.args }}
        before-script-linux: |
          set -e
-          yum install -y clang
-          curl -fsSL https://github.com/protocolbuffers/protobuf/releases/download/v24.4/protoc-24.4-linux-aarch_64.zip -o /tmp/protoc.zip
-          unzip /tmp/protoc.zip -d /usr/local
-          rm /tmp/protoc.zip
-          /usr/local/bin/protoc --version
+          yum install -y clang \
+            && curl -L https://github.com/protocolbuffers/protobuf/releases/download/v24.4/protoc-24.4-linux-aarch_64.zip > /tmp/protoc.zip \
+            && unzip /tmp/protoc.zip -d /usr/local \
+            && rm /tmp/protoc.zip
@@ -103,7 +103,7 @@ jobs:
            features: fp16kernels
            pre_build: brew install protobuf
          - target: x86_64-pc-windows-msvc
-            host: windows-2025-8x-x64
+            host: windows-latest
            features: ","
            pre_build: |-
              choco install --no-progress protoc ninja nasm
@@ -111,21 +111,12 @@ jobs:
              # There is an issue where choco doesn't add nasm to the path
              export PATH="$PATH:/c/Program Files/NASM"
              nasm -v
-              # Fat LTO of the cdylib is single-threaded and the peak-memory
-              # step of the build, and had started hitting rustc-LLVM OOM on the
-              # Windows runners. ThinLTO parallelizes it across the runner's
-              # cores and keeps peak memory well under the limit.
-              export CARGO_PROFILE_RELEASE_LTO=thin
-              export CARGO_PROFILE_RELEASE_CODEGEN_UNITS=16
          - target: aarch64-pc-windows-msvc
-            host: windows-2025-8x-x64
+            host: windows-latest
            features: ","
            pre_build: |-
                choco install --no-progress protoc
                rustup target add aarch64-pc-windows-msvc
-                # See ThinLTO note on the x86_64-pc-windows-msvc target above.
-                export CARGO_PROFILE_RELEASE_LTO=thin
-                export CARGO_PROFILE_RELEASE_CODEGEN_UNITS=16
          - target: x86_64-unknown-linux-gnu
            host: ubuntu-latest
            features: fp16kernels
@@ -2039,9 +2039,9 @@ dependencies = [

 [[package]]
 name = "crossbeam-epoch"
-version = "0.9.20"
+version = "0.9.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2d6914041f254d6e9176c01941b21115dcfb7089e55135a35411081bd106ef3f"
+checksum = "5b82ac4a3c2ca9c3460964f020e1402edd5753411d7737aa39c3714ad1b5420e"
 dependencies = [
 "crossbeam-utils",
 ]
@@ -3151,12 +3151,6 @@ dependencies = [
 "encoding_rs",
 ]

-[[package]]
-name = "endian-type"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c34f04666d835ff5d62e058c3995147c06f42fe86ff053337632bca83e42702d"
-
 [[package]]
 name = "enum-as-inner"
 version = "0.6.1"
@@ -3429,8 +3423,8 @@ checksum = "42703706b716c37f96a77aea830392ad231f44c9e9a67872fa5548707e11b11c"

 [[package]]
 name = "fsst"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow-array",
 "rand 0.9.4",
@@ -3785,30 +3779,6 @@ dependencies = [
 "wasm-bindgen",
 ]

-[[package]]
-name = "goosefs-sdk"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ae079b88ffe7772d12cfc5c40a5a324babb357893d95b5e3a22ae857f236c5f"
-dependencies = [
- "async-trait",
- "bytes",
- "dashmap",
- "hostname",
- "prost",
- "prost-types",
- "rand 0.9.4",
- "reqwest 0.12.28",
- "serde",
- "thiserror 2.0.18",
- "tokio",
- "tokio-stream",
- "tonic",
- "tonic-prost",
- "tracing",
- "uuid",
-]
-
 [[package]]
 name = "group"
 version = "0.12.1"
@@ -4020,17 +3990,6 @@ dependencies = [
 "windows-sys 0.61.2",
 ]

-[[package]]
-name = "hostname"
-version = "0.4.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "617aaa3557aef3810a6369d0a99fac8a080891b68bd9f9812a1eeda0c0730cbd"
-dependencies = [
- "cfg-if 1.0.4",
- "libc",
- "windows-link",
-]
-
 [[package]]
 name = "http"
 version = "0.2.12"
@@ -4191,19 +4150,6 @@ dependencies = [
 "webpki-roots 1.0.7",
 ]

-[[package]]
-name = "hyper-timeout"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b90d566bffbce6a75bd8b09a05aa8c2cb1fabb6cb348f8840c9e4c90a0d83b0"
-dependencies = [
- "hyper 1.9.0",
- "hyper-util",
- "pin-project-lite",
- "tokio",
- "tower-service",
-]
-
 [[package]]
 name = "hyper-util"
 version = "0.1.20"
@@ -4727,7 +4673,7 @@ dependencies = [
 "jiff",
 "nom 8.0.0",
 "num-traits",
- "ordered-float 5.3.0",
+ "ordered-float",
 "rand 0.9.4",
 "serde",
 "serde_json",
@@ -4780,8 +4726,8 @@ checksum = "e037a2e1d8d5fdbd49b16a4ea09d5d6401c1f29eca5ff29d03d3824dba16256a"

 [[package]]
 name = "lance"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arc-swap",
 "arrow",
@@ -4855,8 +4801,8 @@ dependencies = [

 [[package]]
 name = "lance-arrow"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -4865,7 +4811,6 @@ dependencies = [
 "arrow-ord",
 "arrow-schema",
 "arrow-select",
- "bytemuck",
 "bytes",
 "futures",
 "getrandom 0.2.17",
@@ -4878,7 +4823,7 @@ dependencies = [
 [[package]]
 name = "lance-arrow-scalar"
 version = "58.0.0"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -4892,7 +4837,7 @@ dependencies = [
 [[package]]
 name = "lance-arrow-stats"
 version = "58.0.0"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow-array",
 "arrow-schema",
@@ -4901,8 +4846,8 @@ dependencies = [

 [[package]]
 name = "lance-bitpacking"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrayref",
 "crunchy",
@@ -4912,8 +4857,8 @@ dependencies = [

 [[package]]
 name = "lance-core"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -4951,8 +4896,8 @@ dependencies = [

 [[package]]
 name = "lance-datafusion"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow",
 "arrow-array",
@@ -4982,8 +4927,8 @@ dependencies = [

 [[package]]
 name = "lance-datagen"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow",
 "arrow-array",
@@ -5000,8 +4945,8 @@ dependencies = [

 [[package]]
 name = "lance-derive"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -5010,8 +4955,8 @@ dependencies = [

 [[package]]
 name = "lance-encoding"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow-arith",
 "arrow-array",
@@ -5046,8 +4991,8 @@ dependencies = [

 [[package]]
 name = "lance-file"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow-arith",
 "arrow-array",
@@ -5077,8 +5022,8 @@ dependencies = [

 [[package]]
 name = "lance-index"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arc-swap",
 "arrow",
@@ -5143,8 +5088,8 @@ dependencies = [

 [[package]]
 name = "lance-io"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow",
 "arrow-arith",
@@ -5168,7 +5113,6 @@ dependencies = [
 "lance-core",
 "lance-namespace",
 "log",
- "metrics",
 "moka",
 "object_store",
 "object_store_opendal",
@@ -5186,8 +5130,8 @@ dependencies = [

 [[package]]
 name = "lance-linalg"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -5203,8 +5147,8 @@ dependencies = [

 [[package]]
 name = "lance-namespace"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow",
 "async-trait",
@@ -5216,8 +5160,8 @@ dependencies = [

 [[package]]
 name = "lance-namespace-impls"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow",
 "arrow-ipc",
@@ -5240,7 +5184,7 @@ dependencies = [
 "lance-table",
 "log",
 "object_store",
- "quick-xml 0.40.1",
+ "quick-xml 0.38.4",
 "rand 0.9.4",
 "reqwest 0.12.28",
 "roaring",
@@ -5271,8 +5215,8 @@ dependencies = [

 [[package]]
 name = "lance-select"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -5287,8 +5231,8 @@ dependencies = [

 [[package]]
 name = "lance-table"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow",
 "arrow-array",
@@ -5327,8 +5271,8 @@ dependencies = [

 [[package]]
 name = "lance-testing"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "arrow-array",
 "arrow-schema",
@@ -5341,8 +5285,8 @@ dependencies = [

 [[package]]
 name = "lance-tokenizer"
-version = "9.0.0-beta.19"
-source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.19#8f0e6d3a7c53438275b134c0ac1afbc80600616e"
+version = "9.0.0-beta.16"
+source = "git+https://github.com/lance-format/lance.git?tag=v9.0.0-beta.16#78a814b6b448b433f5ebfdb9a8dbdec7b904c59f"
 dependencies = [
 "icu_segmenter",
 "jieba-rs",
@@ -5355,7 +5299,7 @@ dependencies = [

 [[package]]
 name = "lancedb"
-version = "0.32.0-beta.0"
+version = "0.31.0-beta.6"
 dependencies = [
 "ahash",
 "anyhow",
@@ -5411,8 +5355,6 @@ dependencies = [
 "lance-testing",
 "lazy_static",
 "log",
- "metrics",
- "metrics-util",
 "moka",
 "num-traits",
 "object_store",
@@ -5443,7 +5385,7 @@ dependencies = [

 [[package]]
 name = "lancedb-nodejs"
-version = "0.32.0-beta.0"
+version = "0.31.0-beta.6"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -5468,7 +5410,7 @@ dependencies = [

 [[package]]
 name = "lancedb-python"
-version = "0.35.0-beta.0"
+version = "0.34.0-beta.6"
 dependencies = [
 "arrow",
 "async-trait",
@@ -5870,36 +5812,6 @@ dependencies = [
 "stable_deref_trait",
 ]

-[[package]]
-name = "metrics"
-version = "0.24.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89550ee9f79e88fef3119de263694973a8adb26c21d75322164fb8c493039fe2"
-dependencies = [
- "portable-atomic",
- "rapidhash",
-]
-
-[[package]]
-name = "metrics-util"
-version = "0.19.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8496cc523d1f94c1385dd8f0f0c2c480b2b8aeccb5b7e4485ad6365523ae376"
-dependencies = [
- "aho-corasick",
- "crossbeam-epoch",
- "crossbeam-utils",
- "hashbrown 0.15.5",
- "indexmap 2.14.0",
- "metrics",
- "ordered-float 4.6.0",
- "quanta",
- "radix_trie",
- "rand 0.9.4",
- "rand_xoshiro",
- "sketches-ddsketch",
-]
-
 [[package]]
 name = "mime"
 version = "0.3.17"
@@ -6115,15 +6027,6 @@ dependencies = [
 "rawpointer",
 ]

-[[package]]
-name = "nibble_vec"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77a5d83df9f36fe23f0c3648c6bbb8b0298bb5f1939c8f2704431371f4b84d43"
-dependencies = [
- "smallvec",
-]
-
 [[package]]
 name = "nix"
 version = "0.26.4"
@@ -6439,9 +6342,7 @@ dependencies = [
 "opendal-layer-timeout",
 "opendal-service-azblob",
 "opendal-service-azdls",
- "opendal-service-cos",
 "opendal-service-gcs",
- "opendal-service-goosefs",
 "opendal-service-hf",
 "opendal-service-oss",
 "opendal-service-s3",
@@ -6569,23 +6470,6 @@ dependencies = [
 "opendal-core",
 ]

-[[package]]
-name = "opendal-service-cos"
-version = "0.57.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa8cafe9729213375c7331019b0cb756ad3e1aff7f45cd32c45eae91ebde8901"
-dependencies = [
- "bytes",
- "http 1.4.2",
- "log",
- "opendal-core",
- "quick-xml 0.39.4",
- "reqsign-core",
- "reqsign-file-read-tokio",
- "reqsign-tencent-cos",
- "serde",
-]
-
 [[package]]
 name = "opendal-service-gcs"
 version = "0.57.0"
@@ -6607,20 +6491,6 @@ dependencies = [
 "tokio",
 ]

-[[package]]
-name = "opendal-service-goosefs"
-version = "0.57.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "69e43048bde419947ba826fbdc2f134d6c03f44ebf48bd33a03b72f9fc45fcb4"
-dependencies = [
- "bytes",
- "goosefs-sdk",
- "log",
- "opendal-core",
- "serde",
- "tokio",
-]
-
 [[package]]
 name = "opendal-service-hf"
 version = "0.57.0"
@@ -6688,15 +6558,6 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"

-[[package]]
-name = "ordered-float"
-version = "4.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7bb71e1b3fa6ca1c61f383464aaf2bb0e2f8e772a1f01d486832464de363b951"
-dependencies = [
- "num-traits",
-]
-
 [[package]]
 name = "ordered-float"
 version = "5.3.0"
@@ -7736,21 +7597,6 @@ dependencies = [
 "syn 2.0.117",
 ]

-[[package]]
-name = "quanta"
-version = "0.12.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3ab5a9d756f0d97bdc89019bd2e4ea098cf9cde50ee7564dde6b81ccc8f06c7"
-dependencies = [
- "crossbeam-utils",
- "libc",
- "once_cell",
- "raw-cpuid",
- "wasi 0.11.1+wasi-snapshot-preview1",
- "web-sys",
- "winapi",
-]
-
 [[package]]
 name = "quick-xml"
 version = "0.26.0"
@@ -7760,6 +7606,15 @@ dependencies = [
 "memchr",
 ]

+[[package]]
+name = "quick-xml"
+version = "0.38.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b66c2058c55a409d601666cffe35f04333cf1013010882cec174a7467cd4e21c"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "quick-xml"
 version = "0.39.4"
@@ -7770,15 +7625,6 @@ dependencies = [
 "serde",
 ]

-[[package]]
-name = "quick-xml"
-version = "0.40.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2474bd2e5029e7ccb6abb2ba48cf2383a333851dedf495901544281590c7da7f"
-dependencies = [
- "memchr",
-]
-
 [[package]]
 name = "quinn"
 version = "0.11.9"
@@ -7862,16 +7708,6 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc33ff2d4973d518d823d61aa239014831e521c75da58e3df4840d3f47749d09"

-[[package]]
-name = "radix_trie"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c069c179fcdc6a2fe24d8d18305cf085fdbd4f922c041943e203685d6a1c58fd"
-dependencies = [
- "endian-type",
- "nibble_vec",
-]
-
 [[package]]
 name = "rancor"
 version = "0.1.1"
@@ -8006,15 +7842,6 @@ version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "973443cf09a9c8656b574a866ab68dfa19f0867d0340648c7d2f6a71b8a8ea68"

-[[package]]
-name = "rapidhash"
-version = "4.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5da7e78a036ce858e8d55b7e7dc8ba3a88b78350fd2155d3591bbd966b58589e"
-dependencies = [
- "rustversion",
-]
-
 [[package]]
 name = "raw-cpuid"
 version = "11.6.0"
@@ -8299,21 +8126,6 @@ dependencies = [
 "tokio",
 ]

-[[package]]
-name = "reqsign-tencent-cos"
-version = "3.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e128f19525861dbded59e1e7c17653a8ed63d573ca04aed708d552dbef5bb32a"
-dependencies = [
- "anyhow",
- "http 1.4.2",
- "log",
- "percent-encoding",
- "reqsign-core",
- "serde",
- "serde_json",
-]
-
 [[package]]
 name = "reqwest"
 version = "0.12.28"
@@ -9192,12 +9004,6 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ee5873ec9cce0195efcb7a4e9507a04cd49aec9c83d0389df45b1ef7ba2e649"

-[[package]]
-name = "sketches-ddsketch"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c6f73aeb92d671e0cc4dca167e59b2deb6387c375391bc99ee743f326994a2b"
-
 [[package]]
 name = "slab"
 version = "0.4.12"
@@ -10005,45 +9811,6 @@ dependencies = [
 "winnow",
 ]

-[[package]]
-name = "tonic"
-version = "0.14.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac2a5518c70fa84342385732db33fb3f44bc4cc748936eb5833d2df34d6445ef"
-dependencies = [
- "async-trait",
- "base64 0.22.1",
- "bytes",
- "h2 0.4.14",
- "http 1.4.2",
- "http-body 1.0.1",
- "http-body-util",
- "hyper 1.9.0",
- "hyper-timeout",
- "hyper-util",
- "percent-encoding",
- "pin-project",
- "socket2 0.6.3",
- "sync_wrapper",
- "tokio",
- "tokio-stream",
- "tower",
- "tower-layer",
- "tower-service",
- "tracing",
-]
-
-[[package]]
-name = "tonic-prost"
-version = "0.14.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "50849f68853be452acf590cde0b146665b8d507b3b8af17261df47e02c209ea0"
-dependencies = [
- "bytes",
- "prost",
- "tonic",
-]
-
 [[package]]
 name = "tower"
 version = "0.5.3"
@@ -10052,12 +9819,9 @@ checksum = "ebe5ef63511595f1344e2d5cfa636d973292adc0eec1f0ad45fae9f0851ab1d4"
 dependencies = [
 "futures-core",
 "futures-util",
- "indexmap 2.14.0",
 "pin-project-lite",
- "slab",
 "sync_wrapper",
 "tokio",
- "tokio-util",
 "tower-layer",
 "tower-service",
 "tracing",
@@ -13,20 +13,20 @@ categories = ["database-implementations"]
 rust-version = "1.91.0"

 [workspace.dependencies]
-lance = { "version" = "=9.0.0-beta.19", default-features = false, "tag" = "v9.0.0-beta.19", "git" = "https://github.com/lance-format/lance.git" }
-lance-core = { "version" = "=9.0.0-beta.19", "tag" = "v9.0.0-beta.19", "git" = "https://github.com/lance-format/lance.git" }
-lance-datagen = { "version" = "=9.0.0-beta.19", "tag" = "v9.0.0-beta.19", "git" = "https://github.com/lance-format/lance.git" }
-lance-file = { "version" = "=9.0.0-beta.19", "tag" = "v9.0.0-beta.19", "git" = "https://github.com/lance-format/lance.git" }
-lance-io = { "version" = "=9.0.0-beta.19", default-features = false, "tag" = "v9.0.0-beta.19", "git" = "https://github.com/lance-format/lance.git" }
-lance-index = { "version" = "=9.0.0-beta.19", "tag" = "v9.0.0-beta.19", "git" = "https://github.com/lance-format/lance.git" }
-lance-linalg = { "version" = "=9.0.0-beta.19", "tag" = "v9.0.0-beta.19", "git" = "https://github.com/lance-format/lance.git" }
-lance-namespace = { "version" = "=9.0.0-beta.19", "tag" = "v9.0.0-beta.19", "git" = "https://github.com/lance-format/lance.git" }
-lance-namespace-impls = { "version" = "=9.0.0-beta.19", default-features = false, "tag" = "v9.0.0-beta.19", "git" = "https://github.com/lance-format/lance.git" }
-lance-table = { "version" = "=9.0.0-beta.19", "tag" = "v9.0.0-beta.19", "git" = "https://github.com/lance-format/lance.git" }
-lance-testing = { "version" = "=9.0.0-beta.19", "tag" = "v9.0.0-beta.19", "git" = "https://github.com/lance-format/lance.git" }
-lance-datafusion = { "version" = "=9.0.0-beta.19", "tag" = "v9.0.0-beta.19", "git" = "https://github.com/lance-format/lance.git" }
-lance-encoding = { "version" = "=9.0.0-beta.19", "tag" = "v9.0.0-beta.19", "git" = "https://github.com/lance-format/lance.git" }
-lance-arrow = { "version" = "=9.0.0-beta.19", "tag" = "v9.0.0-beta.19", "git" = "https://github.com/lance-format/lance.git" }
+lance = { "version" = "=9.0.0-beta.16", default-features = false, "tag" = "v9.0.0-beta.16", "git" = "https://github.com/lance-format/lance.git" }
+lance-core = { "version" = "=9.0.0-beta.16", "tag" = "v9.0.0-beta.16", "git" = "https://github.com/lance-format/lance.git" }
+lance-datagen = { "version" = "=9.0.0-beta.16", "tag" = "v9.0.0-beta.16", "git" = "https://github.com/lance-format/lance.git" }
+lance-file = { "version" = "=9.0.0-beta.16", "tag" = "v9.0.0-beta.16", "git" = "https://github.com/lance-format/lance.git" }
+lance-io = { "version" = "=9.0.0-beta.16", default-features = false, "tag" = "v9.0.0-beta.16", "git" = "https://github.com/lance-format/lance.git" }
+lance-index = { "version" = "=9.0.0-beta.16", "tag" = "v9.0.0-beta.16", "git" = "https://github.com/lance-format/lance.git" }
+lance-linalg = { "version" = "=9.0.0-beta.16", "tag" = "v9.0.0-beta.16", "git" = "https://github.com/lance-format/lance.git" }
+lance-namespace = { "version" = "=9.0.0-beta.16", "tag" = "v9.0.0-beta.16", "git" = "https://github.com/lance-format/lance.git" }
+lance-namespace-impls = { "version" = "=9.0.0-beta.16", default-features = false, "tag" = "v9.0.0-beta.16", "git" = "https://github.com/lance-format/lance.git" }
+lance-table = { "version" = "=9.0.0-beta.16", "tag" = "v9.0.0-beta.16", "git" = "https://github.com/lance-format/lance.git" }
+lance-testing = { "version" = "=9.0.0-beta.16", "tag" = "v9.0.0-beta.16", "git" = "https://github.com/lance-format/lance.git" }
+lance-datafusion = { "version" = "=9.0.0-beta.16", "tag" = "v9.0.0-beta.16", "git" = "https://github.com/lance-format/lance.git" }
+lance-encoding = { "version" = "=9.0.0-beta.16", "tag" = "v9.0.0-beta.16", "git" = "https://github.com/lance-format/lance.git" }
+lance-arrow = { "version" = "=9.0.0-beta.16", "tag" = "v9.0.0-beta.16", "git" = "https://github.com/lance-format/lance.git" }
 ahash = "0.8"
 # Note that this one does not include pyarrow
 arrow = { version = "58.0.0", optional = false }
@@ -54,8 +54,6 @@ half = { "version" = "2.7.1", default-features = false, features = [
 ] }
 futures = "0"
 log = "0.4"
-metrics = "0.24"
-metrics-util = "0.19"
 moka = { version = "0.12", features = ["future"] }
 object_store = "0.13.2"
 pin-project = "1.0.7"
@@ -51,6 +51,18 @@ ignore = [
    # https://rustsec.org/advisories/RUSTSEC-2024-0436
    { id = "RUSTSEC-2024-0436", reason = "transitive via datafusion; awaiting ecosystem migration" },

+    # encoding: unmaintained. Reached through lindera-dictionary, which is
+    # required by the native Lindera tokenizer path. Lindera has not migrated
+    # off this crate yet.
+    # https://rustsec.org/advisories/RUSTSEC-2021-0153
+    { id = "RUSTSEC-2021-0153", reason = "transitive via lindera-dictionary for native Lindera tokenizer" },
+
+    # fast-float: unsound and unmaintained. Reached only through polars-arrow
+    # from the optional Polars integration; replacement requires a Polars
+    # dependency upgrade.
+    # https://rustsec.org/advisories/RUSTSEC-2024-0379
+    { id = "RUSTSEC-2024-0379", reason = "transitive via polars-arrow; waiting on Polars migration" },
+
    # tantivy: segfault on malformed input due to missing bounds check.
    # Pulled in via lance for full-text search. We only feed tantivy
    # documents we construct ourselves, not attacker-controlled bytes.
@@ -68,6 +80,18 @@ ignore = [
    # https://rustsec.org/advisories/RUSTSEC-2025-0119
    { id = "RUSTSEC-2025-0119", reason = "transitive via hf-hub/indicatif; cosmetic formatting crate" },

+    # bincode: unmaintained. Reached through lindera and lindera-dictionary,
+    # which are required by the native Lindera tokenizer path. Lindera has not
+    # migrated to another serialization format yet.
+    # https://rustsec.org/advisories/RUSTSEC-2025-0141
+    { id = "RUSTSEC-2025-0141", reason = "transitive via lindera/lindera-dictionary for native Lindera tokenizer" },
+
+    # lru: soundness issue in IterMut. Reached only through aws-sdk-s3 in
+    # LanceDB's dev-dependency graph; LanceDB does not use that iterator
+    # directly. Clearing this requires the AWS SDK chain to update lru.
+    # https://rustsec.org/advisories/RUSTSEC-2026-0002
+    { id = "RUSTSEC-2026-0002", reason = "transitive via aws-sdk-s3 dev-dependency; waiting on AWS SDK lru upgrade" },
+
    # rustls-webpki 0.101.7 (old major line): name-constraint checks for
    # URI / wildcard names. Pulled in only via the legacy rustls 0.21 chain
    # from aws-smithy-http-client. The 0.103 line we actively use is patched.
@@ -84,6 +108,12 @@ ignore = [
    # https://rustsec.org/advisories/RUSTSEC-2026-0104
    { id = "RUSTSEC-2026-0104", reason = "only affects rustls-webpki 0.101 from legacy aws-smithy/rustls 0.21 chain" },

+    # rand 0.8.5: soundness issue only when ThreadRng reseeds inside a custom
+    # logger. Reached through several transitive chains. LanceDB does not use
+    # rand from a custom logger; upgrade once all pinned chains accept 0.8.6+.
+    # https://rustsec.org/advisories/RUSTSEC-2026-0097
+    { id = "RUSTSEC-2026-0097", reason = "transitive rand 0.8.5; LanceDB does not call ThreadRng from custom logging" },
+
    # pyo3 advisories in the Python bindings; tracked pending a patched pyo3 release.
    # https://rustsec.org/advisories/RUSTSEC-2026-0176
    # https://rustsec.org/advisories/RUSTSEC-2026-0177
@@ -14,7 +14,7 @@ Add the following dependency to your `pom.xml`:
 <dependency>
    <groupId>com.lancedb</groupId>
    <artifactId>lancedb-core</artifactId>
-    <version>0.32.0-beta.0</version>
+    <version>0.31.0-beta.6</version>
 </dependency>
 ```

@@ -398,26 +398,6 @@ Drop an index from the table.

 ***

-### getLsmWriteSpec()
-
-```ts
-abstract getLsmWriteSpec(): Promise<undefined | LsmWriteSpec>
-```
-
-Read the [LsmWriteSpec](../interfaces/LsmWriteSpec.md) currently installed on this table.
-
-Resolves to `undefined` when the MemWAL LSM write path is not enabled (no
-spec has been set, or it was removed with [Table#unsetLsmWriteSpec](Table.md#unsetlsmwritespec)).
-The returned spec — including its `maintainedIndexes` and
-`writerConfigDefaults` — mirrors what was passed to
-[Table#setLsmWriteSpec](Table.md#setlsmwritespec).
-
-#### Returns
-
-`Promise`&lt;`undefined` \| [`LsmWriteSpec`](../interfaces/LsmWriteSpec.md)&gt;
-
-***
-
 ### indexStats()

 ```ts
@@ -1,42 +0,0 @@
-[**@lancedb/lancedb**](../README.md) • **Docs**
-
-***
-
-[@lancedb/lancedb](../globals.md) / instrumentLanceDbMetrics
-
-# Function: instrumentLanceDbMetrics()
-
-```ts
-function instrumentLanceDbMetrics(meterProvider?): boolean
-```
-
-Register LanceDB metrics as OpenTelemetry observable instruments.
-
-Installs a process-global metrics recorder and creates one observable
-instrument per LanceDB metric (currently object store request counts, bytes,
-latency, errors, and throttles) on the given (or global) `MeterProvider`. The
-configured `MetricReader` then collects them on its own schedule.
-
-Counters and gauges map directly to observable counters/gauges. Because
-OpenTelemetry has no asynchronous histogram instrument, each histogram is
-exported Prometheus-style as cumulative `le` bucket counts (`<name>_bucket`,
-with an `le` attribute) plus `<name>_count` and `<name>_sum`.
-
-Requires `@opentelemetry/api` (a dependency) and, to actually export, an
-OpenTelemetry SDK such as `@opentelemetry/sdk-metrics`.
-
-## Parameters
-
-* **meterProvider?**: `MeterProvider`
-    The provider to register instruments on. Defaults to the
-    global provider from `@opentelemetry/api`.
-
-## Returns
-
-`boolean`
-
-`true` if the recorder is installed and instruments are registered.
-  `false` if a different `metrics` recorder is already installed in this
-  process (only one global recorder is permitted), in which case a warning is
-  emitted and no instruments are created. Calling this more than once is safe;
-  instruments are created only on the first successful call.
@@ -131,7 +131,6 @@
 - [RecordBatchIterator](functions/RecordBatchIterator.md)
 - [connect](functions/connect.md)
 - [connectNamespace](functions/connectNamespace.md)
- [instrumentLanceDbMetrics](functions/instrumentLanceDbMetrics.md)
 - [makeArrowTable](functions/makeArrowTable.md)
 - [packBits](functions/packBits.md)
 - [permutationBuilder](functions/permutationBuilder.md)
@@ -8,7 +8,7 @@
    <parent>
      <groupId>com.lancedb</groupId>
      <artifactId>lancedb-parent</artifactId>
-      <version>0.32.0-beta.0</version>
+      <version>0.31.0-beta.6</version>
      <relativePath>../pom.xml</relativePath>
    </parent>

@@ -6,7 +6,7 @@

    <groupId>com.lancedb</groupId>
    <artifactId>lancedb-parent</artifactId>
-    <version>0.32.0-beta.0</version>
+    <version>0.31.0-beta.6</version>
    <packaging>pom</packaging>
    <name>${project.artifactId}</name>
    <description>LanceDB Java SDK Parent POM</description>
@@ -28,7 +28,7 @@
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <arrow.version>15.0.0</arrow.version>
-        <lance-core.version>9.0.0-beta.19</lance-core.version>
+        <lance-core.version>9.0.0-beta.16</lance-core.version>
        <spotless.skip>false</spotless.skip>
        <spotless.version>2.30.0</spotless.version>
        <spotless.java.googlejavaformat.version>1.7</spotless.java.googlejavaformat.version>
@@ -1,7 +1,7 @@
 [package]
 name = "lancedb-nodejs"
 edition.workspace = true
-version = "0.32.0-beta.0"
+version = "0.31.0-beta.6"
 publish = false
 license.workspace = true
 description.workspace = true
@@ -44,6 +44,6 @@ aws-lc-rs = "=1.16.3"
 napi-build = "2.3.1"

 [features]
-default = ["remote", "lancedb/aws", "lancedb/gcs", "lancedb/azure", "lancedb/dynamodb", "lancedb/oss", "lancedb/huggingface", "lancedb/goosefs", "lancedb/metrics-otel"]
+default = ["remote", "lancedb/aws", "lancedb/gcs", "lancedb/azure", "lancedb/dynamodb", "lancedb/oss", "lancedb/huggingface"]
 fp16kernels = ["lancedb/fp16kernels"]
 remote = ["lancedb/remote"]
@@ -1,114 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0
-// SPDX-FileCopyrightText: Copyright The LanceDB Authors
-
-import {
-  MeterProvider,
-  type MetricData,
-  MetricReader,
-} from "@opentelemetry/sdk-metrics";
-import * as tmp from "tmp";
-import { connect, instrumentLanceDbMetrics } from "../lancedb";
-// snapshotLancedbMetrics is internal plumbing (not part of the public API), so
-// it is imported from the native module rather than the package entry point.
-import { snapshotLancedbMetrics } from "../lancedb/native";
-
-// The metrics recorder is process-global and installed once, so the whole
-// bridge is exercised in a single test to avoid cross-test global-state coupling.
-
-// A minimal pull-based reader whose `collect()` we drive directly, invoking the
-// observable-instrument callbacks. `@opentelemetry/sdk-metrics` ships no
-// in-memory reader, so we subclass the abstract base.
-class TestMetricReader extends MetricReader {
-  protected async onForceFlush(): Promise<void> {
-    // no-op: collection is driven directly via collect()
-  }
-  protected async onShutdown(): Promise<void> {
-    // no-op: nothing to release
-  }
-}
-
-async function metricsByName(
-  reader: TestMetricReader,
-): Promise<Map<string, MetricData>> {
-  const collected = await reader.collect();
-  const result = new Map<string, MetricData>();
-  for (const scope of collected.resourceMetrics.scopeMetrics) {
-    for (const metric of scope.metrics) {
-      result.set(metric.descriptor.name, metric);
-    }
-  }
-  return result;
-}
-
-describe("OpenTelemetry metrics bridge", () => {
-  let tmpDir: tmp.DirResult;
-  beforeEach(() => {
-    tmpDir = tmp.dirSync({ unsafeCleanup: true });
-  });
-  afterEach(() => tmpDir.removeCallback());
-
-  it("snapshot is safe to call regardless of install state", () => {
-    expect(Array.isArray(snapshotLancedbMetrics())).toBe(true);
-  });
-
-  it("exports object store metrics via observable instruments", async () => {
-    const reader = new TestMetricReader();
-    const provider = new MeterProvider({ readers: [reader] });
-    expect(instrumentLanceDbMetrics(provider)).toBe(true);
-
-    // Generate object store activity on the local filesystem (scheme "file").
-    const db = await connect(tmpDir.name);
-    const data = Array.from({ length: 256 }, (_, i) => ({ id: i }));
-    const table = await db.createTable("t", data);
-    expect(await table.countRows()).toBe(256);
-
-    const metrics = await metricsByName(reader);
-
-    const requests = metrics.get("lance_object_store_requests_total");
-    expect(requests).toBeDefined();
-    // biome-ignore lint/suspicious/noExplicitAny: SDK point shape
-    const requestPoints = (requests!.dataPoints as any[]) ?? [];
-    expect(requestPoints.length).toBeGreaterThan(0);
-    for (const p of requestPoints) {
-      // Labelled by `operation` and `base` (the store scheme by default).
-      expect(p.attributes).toHaveProperty("base");
-      expect(p.attributes).toHaveProperty("operation");
-    }
-    const totalRequests = requestPoints.reduce((acc, p) => acc + p.value, 0);
-    expect(totalRequests).toBeGreaterThan(0);
-
-    // Histograms are decomposed into bucket / count / sum observable counters.
-    const bucket = metrics.get(
-      "lance_object_store_request_duration_seconds_bucket",
-    );
-    expect(bucket).toBeDefined();
-    // biome-ignore lint/suspicious/noExplicitAny: SDK point shape
-    const bucketPoints = (bucket!.dataPoints as any[]) ?? [];
-    expect(bucketPoints.length).toBeGreaterThan(0);
-    expect(bucketPoints.every((p) => "le" in p.attributes)).toBe(true);
-    // The implicit +Inf bucket must be present.
-    expect(bucketPoints.some((p) => p.attributes.le === "+Inf")).toBe(true);
-
-    const count = metrics.get(
-      "lance_object_store_request_duration_seconds_count",
-    );
-    expect(count).toBeDefined();
-    // biome-ignore lint/suspicious/noExplicitAny: SDK point shape
-    const countPoints = (count!.dataPoints as any[]) ?? [];
-    expect(countPoints.reduce((acc, p) => acc + p.value, 0)).toBeGreaterThan(0);
-
-    const sum = metrics.get("lance_object_store_request_duration_seconds_sum");
-    expect(sum).toBeDefined();
-    // biome-ignore lint/suspicious/noExplicitAny: SDK point shape
-    const sumPoints = (sum!.dataPoints as any[]) ?? [];
-    expect(sumPoints.reduce((acc, p) => acc + p.value, 0)).toBeGreaterThan(0);
-
-    // Unit handling: only `_sum` keeps the histogram's unit (seconds); `_bucket`
-    // and `_count` observe cumulative counts and are unitless.
-    expect(sum!.descriptor.unit).toBe("s");
-    expect(bucket!.descriptor.unit).toBe("");
-    expect(count!.descriptor.unit).toBe("");
-
-    await provider.shutdown();
-  });
-});
@@ -2992,56 +2992,6 @@ describe("setLsmWriteSpec / unsetLsmWriteSpec", () => {
      }),
    ).rejects.toThrow();
  });
-
-  it("reads back the installed spec via getLsmWriteSpec", async () => {
-    const conn = await connect(tmpDir.name);
-    const table = await makeTable(conn);
-    await table.setUnenforcedPrimaryKey("id");
-
-    // Nothing installed yet.
-    expect(await table.getLsmWriteSpec()).toBeUndefined();
-
-    // A real scalar index is needed to name it as a maintained index.
-    await table.add([{ id: 1 }, { id: 2 }, { id: 3 }]);
-    await table.createIndex("id");
-    const indexName = (await table.listIndices())[0].name;
-
-    // Bucket spec round-trips, including maintained indexes and writer config
-    // defaults. Lance writer-config keys are canonically snake_case.
-    // biome-ignore lint/style/useNamingConvention: Lance writer-config keys are snake_case
-    const writerConfigDefaults = { durable_write: "false" };
-    await table.setLsmWriteSpec({
-      specType: "bucket",
-      column: "id",
-      numBuckets: 4,
-      maintainedIndexes: [indexName],
-      writerConfigDefaults,
-    });
-    const spec = await table.getLsmWriteSpec();
-    expect(spec).toBeDefined();
-    expect(spec?.specType).toBe("bucket");
-    expect(spec?.column).toBe("id");
-    expect(spec?.numBuckets).toBe(4);
-    expect(spec?.maintainedIndexes).toEqual([indexName]);
-    expect(spec?.writerConfigDefaults).toEqual(writerConfigDefaults);
-
-    // After unset, undefined again.
-    await table.unsetLsmWriteSpec();
-    expect(await table.getLsmWriteSpec()).toBeUndefined();
-
-    // Identity round-trips (column recovered from the schema).
-    await table.setLsmWriteSpec({ specType: "identity", column: "id" });
-    const identity = await table.getLsmWriteSpec();
-    expect(identity?.specType).toBe("identity");
-    expect(identity?.column).toBe("id");
-    await table.unsetLsmWriteSpec();
-
-    // Unsharded round-trips (no routing column).
-    await table.setLsmWriteSpec({ specType: "unsharded" });
-    const unsharded = await table.getLsmWriteSpec();
-    expect(unsharded?.specType).toBe("unsharded");
-    expect(unsharded?.column).toBeFalsy();
-  });
 });

 describe("LSM merge insert", () => {
@@ -20,11 +20,6 @@ import { HeaderProvider } from "./header";
 // Re-export native header provider for use with connectWithHeaderProvider
 export { JsHeaderProvider as NativeJsHeaderProvider } from "./native.js";

-// OpenTelemetry metrics bridge. Only the high-level entry point is public; the
-// underlying recorder/catalog/snapshot functions remain internal plumbing that
-// `otel.ts` consumes from the native module.
-export { instrumentLanceDbMetrics } from "./otel";
-
 export {
  AddColumnsSql,
  ConnectionOptions,
@@ -1,137 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0
-// SPDX-FileCopyrightText: Copyright The LanceDB Authors
-
-import {
-  type Attributes,
-  type MeterProvider,
-  type ObservableResult,
-  metrics,
-} from "@opentelemetry/api";
-
-import {
-  lancedbMetricsCatalog,
-  registerLancedbMetricsRecorder,
-  snapshotLancedbMetrics,
-} from "./native";
-
-let instrumented = false;
-
-/**
- * Register LanceDB metrics as OpenTelemetry observable instruments.
- *
- * Installs a process-global metrics recorder and creates one observable
- * instrument per LanceDB metric (currently object store request counts, bytes,
- * latency, errors, and throttles) on the given (or global) `MeterProvider`. The
- * configured `MetricReader` then collects them on its own schedule.
- *
- * Counters and gauges map directly to observable counters/gauges. Because
- * OpenTelemetry has no asynchronous histogram instrument, each histogram is
- * exported Prometheus-style as cumulative `le` bucket counts (`<name>_bucket`,
- * with an `le` attribute) plus `<name>_count` and `<name>_sum`.
- *
- * Requires `@opentelemetry/api` (a dependency) and, to actually export, an
- * OpenTelemetry SDK such as `@opentelemetry/sdk-metrics`.
- *
- * @param meterProvider The provider to register instruments on. Defaults to the
- *   global provider from `@opentelemetry/api`.
- * @returns `true` if the recorder is installed and instruments are registered.
- *   `false` if a different `metrics` recorder is already installed in this
- *   process (only one global recorder is permitted), in which case a warning is
- *   emitted and no instruments are created. Calling this more than once is safe;
- *   instruments are created only on the first successful call.
- */
-export function instrumentLanceDbMetrics(
-  meterProvider?: MeterProvider,
-): boolean {
-  if (!registerLancedbMetricsRecorder()) {
-    console.warn(
-      "Could not install the LanceDB metrics recorder: another `metrics` " +
-        "recorder is already installed in this process. LanceDB metrics will " +
-        "not be exported via OpenTelemetry.",
-    );
-    return false;
-  }
-
-  if (instrumented) {
-    return true;
-  }
-
-  const provider = meterProvider ?? metrics.getMeterProvider();
-  const meter = provider.getMeter("lancedb");
-
-  const scalarCallback = (metricName: string) => (result: ObservableResult) => {
-    for (const point of snapshotLancedbMetrics()) {
-      if (point.name === metricName && point.value != null) {
-        result.observe(point.value, point.attributes);
-      }
-    }
-  };
-
-  const bucketCallback = (metricName: string) => (result: ObservableResult) => {
-    for (const point of snapshotLancedbMetrics()) {
-      if (point.name !== metricName || point.buckets == null) {
-        continue;
-      }
-      for (const bucket of point.buckets) {
-        const attributes: Attributes = {
-          ...point.attributes,
-          le: bucket.le,
-        };
-        result.observe(bucket.cumulativeCount, attributes);
-      }
-    }
-  };
-
-  const fieldCallback =
-    (metricName: string, field: "count" | "sum") =>
-    (result: ObservableResult) => {
-      for (const point of snapshotLancedbMetrics()) {
-        if (point.name !== metricName) {
-          continue;
-        }
-        const value = point[field];
-        if (value != null) {
-          result.observe(value, point.attributes);
-        }
-      }
-    };
-
-  for (const desc of lancedbMetricsCatalog()) {
-    const unit = desc.unit ?? "";
-    if (desc.kind === "counter") {
-      const counter = meter.createObservableCounter(desc.name, {
-        unit,
-        description: desc.description,
-      });
-      counter.addCallback(scalarCallback(desc.name));
-    } else if (desc.kind === "gauge") {
-      const gauge = meter.createObservableGauge(desc.name, {
-        unit,
-        description: desc.description,
-      });
-      gauge.addCallback(scalarCallback(desc.name));
-    } else if (desc.kind === "histogram") {
-      // `_bucket` and `_count` observe cumulative sample counts, not the
-      // histogram's measured quantity, so they are unitless; only `_sum`
-      // carries the histogram's unit.
-      const bucket = meter.createObservableCounter(`${desc.name}_bucket`, {
-        description: `${desc.description} (cumulative buckets)`,
-      });
-      bucket.addCallback(bucketCallback(desc.name));
-
-      const count = meter.createObservableCounter(`${desc.name}_count`, {
-        description: `${desc.description} (count)`,
-      });
-      count.addCallback(fieldCallback(desc.name, "count"));
-
-      const sum = meter.createObservableCounter(`${desc.name}_sum`, {
-        unit,
-        description: `${desc.description} (sum)`,
-      });
-      sum.addCallback(fieldCallback(desc.name, "sum"));
-    }
-  }
-
-  instrumented = true;
-  return true;
-}
@@ -585,17 +585,6 @@ export abstract class Table {
   * @returns {Promise<void>}
   */
  abstract unsetLsmWriteSpec(): Promise<void>;
-  /**
-   * Read the {@link LsmWriteSpec} currently installed on this table.
-   *
-   * Resolves to `undefined` when the MemWAL LSM write path is not enabled (no
-   * spec has been set, or it was removed with {@link Table#unsetLsmWriteSpec}).
-   * The returned spec — including its `maintainedIndexes` and
-   * `writerConfigDefaults` — mirrors what was passed to
-   * {@link Table#setLsmWriteSpec}.
-   * @returns {Promise<LsmWriteSpec | undefined>}
-   */
-  abstract getLsmWriteSpec(): Promise<LsmWriteSpec | undefined>;
  /**
   * Drain and close any cached MemWAL shard writers held for this table.
   *
@@ -1102,15 +1091,6 @@ export class LocalTable extends Table {
    return await this.inner.unsetLsmWriteSpec();
  }

-  async getLsmWriteSpec(): Promise<LsmWriteSpec | undefined> {
-    // The native binding types `specType` as a plain `string`; narrow it back
-    // to the public union. The Rust `From` impl only ever emits one of the
-    // three valid values, so the cast is safe.
-    return ((await this.inner.getLsmWriteSpec()) ?? undefined) as
-      | LsmWriteSpec
-      | undefined;
-  }
-
  async closeLsmWriters(): Promise<void> {
    return await this.inner.closeLsmWriters();
  }
@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-darwin-arm64",
-	"version": "0.32.0-beta.0",
+	"version": "0.31.0-beta.6",
 	"os": ["darwin"],
 	"cpu": ["arm64"],
 	"main": "lancedb.darwin-arm64.node",
@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-arm64-gnu",
-	"version": "0.32.0-beta.0",
+	"version": "0.31.0-beta.6",
 	"os": ["linux"],
 	"cpu": ["arm64"],
 	"main": "lancedb.linux-arm64-gnu.node",
@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-arm64-musl",
-	"version": "0.32.0-beta.0",
+	"version": "0.31.0-beta.6",
 	"os": ["linux"],
 	"cpu": ["arm64"],
 	"main": "lancedb.linux-arm64-musl.node",
@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-x64-gnu",
-	"version": "0.32.0-beta.0",
+	"version": "0.31.0-beta.6",
 	"os": ["linux"],
 	"cpu": ["x64"],
 	"main": "lancedb.linux-x64-gnu.node",
@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-x64-musl",
-	"version": "0.32.0-beta.0",
+	"version": "0.31.0-beta.6",
 	"os": ["linux"],
 	"cpu": ["x64"],
 	"main": "lancedb.linux-x64-musl.node",
@@ -1,6 +1,6 @@
 {
  "name": "@lancedb/lancedb-win32-arm64-msvc",
-  "version": "0.32.0-beta.0",
+  "version": "0.31.0-beta.6",
  "os": [
    "win32"
  ],
@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-win32-x64-msvc",
-	"version": "0.32.0-beta.0",
+	"version": "0.31.0-beta.6",
 	"os": ["win32"],
 	"cpu": ["x64"],
 	"main": "lancedb.win32-x64-msvc.node",
@@ -1,12 +1,12 @@
 {
  "name": "@lancedb/lancedb",
-  "version": "0.32.0-beta.0",
+  "version": "0.31.0-beta.6",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "@lancedb/lancedb",
-      "version": "0.32.0-beta.0",
+      "version": "0.31.0-beta.6",
      "cpu": [
        "x64",
        "arm64"
@@ -18,7 +18,6 @@
        "win32"
      ],
      "dependencies": {
-        "@opentelemetry/api": "^1.9.0",
        "reflect-metadata": "^0.2.2"
      },
      "devDependencies": {
@@ -28,7 +27,6 @@
        "@biomejs/biome": "^1.7.3",
        "@jest/globals": "^29.7.0",
        "@napi-rs/cli": "3.7.0",
-        "@opentelemetry/sdk-metrics": "^1.30.0",
        "@types/axios": "^0.14.0",
        "@types/jest": "^29.1.2",
        "@types/node": "22.7.4",
@@ -4150,75 +4148,6 @@
        "@octokit/openapi-types": "^27.0.0"
      }
    },
-    "node_modules/@opentelemetry/api": {
-      "version": "1.9.1",
-      "resolved": "https://registry.npmjs.org/@opentelemetry/api/-/api-1.9.1.tgz",
-      "integrity": "sha512-gLyJlPHPZYdAk1JENA9LeHejZe1Ti77/pTeFm/nMXmQH/HFZlcS/O2XJB+L8fkbrNSqhdtlvjBVjxwUYanNH5Q==",
-      "license": "Apache-2.0",
-      "engines": {
-        "node": ">=8.0.0"
-      }
-    },
-    "node_modules/@opentelemetry/core": {
-      "version": "1.30.1",
-      "resolved": "https://registry.npmjs.org/@opentelemetry/core/-/core-1.30.1.tgz",
-      "integrity": "sha512-OOCM2C/QIURhJMuKaekP3TRBxBKxG/TWWA0TL2J6nXUtDnuCtccy49LUJF8xPFXMX+0LMcxFpCo8M9cGY1W6rQ==",
-      "dev": true,
-      "license": "Apache-2.0",
-      "dependencies": {
-        "@opentelemetry/semantic-conventions": "1.28.0"
-      },
-      "engines": {
-        "node": ">=14"
-      },
-      "peerDependencies": {
-        "@opentelemetry/api": ">=1.0.0 <1.10.0"
-      }
-    },
-    "node_modules/@opentelemetry/resources": {
-      "version": "1.30.1",
-      "resolved": "https://registry.npmjs.org/@opentelemetry/resources/-/resources-1.30.1.tgz",
-      "integrity": "sha512-5UxZqiAgLYGFjS4s9qm5mBVo433u+dSPUFWVWXmLAD4wB65oMCoXaJP1KJa9DIYYMeHu3z4BZcStG3LC593cWA==",
-      "dev": true,
-      "license": "Apache-2.0",
-      "dependencies": {
-        "@opentelemetry/core": "1.30.1",
-        "@opentelemetry/semantic-conventions": "1.28.0"
-      },
-      "engines": {
-        "node": ">=14"
-      },
-      "peerDependencies": {
-        "@opentelemetry/api": ">=1.0.0 <1.10.0"
-      }
-    },
-    "node_modules/@opentelemetry/sdk-metrics": {
-      "version": "1.30.1",
-      "resolved": "https://registry.npmjs.org/@opentelemetry/sdk-metrics/-/sdk-metrics-1.30.1.tgz",
-      "integrity": "sha512-q9zcZ0Okl8jRgmy7eNW3Ku1XSgg3sDLa5evHZpCwjspw7E8Is4K/haRPDJrBcX3YSn/Y7gUvFnByNYEKQNbNog==",
-      "dev": true,
-      "license": "Apache-2.0",
-      "dependencies": {
-        "@opentelemetry/core": "1.30.1",
-        "@opentelemetry/resources": "1.30.1"
-      },
-      "engines": {
-        "node": ">=14"
-      },
-      "peerDependencies": {
-        "@opentelemetry/api": ">=1.3.0 <1.10.0"
-      }
-    },
-    "node_modules/@opentelemetry/semantic-conventions": {
-      "version": "1.28.0",
-      "resolved": "https://registry.npmjs.org/@opentelemetry/semantic-conventions/-/semantic-conventions-1.28.0.tgz",
-      "integrity": "sha512-lp4qAiMTD4sNWW4DbKLBkfiMZ4jbAboJIGOQr5DvciMRI494OapieI9qiODpOt0XBr1LjIDy1xAGAnVs5supTA==",
-      "dev": true,
-      "license": "Apache-2.0",
-      "engines": {
-        "node": ">=14"
-      }
-    },
    "node_modules/@protobufjs/aspromise": {
      "version": "1.1.2",
      "resolved": "https://registry.npmjs.org/@protobufjs/aspromise/-/aspromise-1.1.2.tgz",
@@ -11,7 +11,7 @@
    "ann"
  ],
  "private": false,
-  "version": "0.32.0-beta.0",
+  "version": "0.31.0-beta.6",
  "main": "dist/index.js",
  "exports": {
    ".": "./dist/index.js",
@@ -44,7 +44,6 @@
    "@biomejs/biome": "^1.7.3",
    "@jest/globals": "^29.7.0",
    "@napi-rs/cli": "3.7.0",
-    "@opentelemetry/sdk-metrics": "^1.30.0",
    "@types/axios": "^0.14.0",
    "@types/jest": "^29.1.2",
    "@types/node": "22.7.4",
@@ -93,7 +92,6 @@
    "version": "napi version"
  },
  "dependencies": {
-    "@opentelemetry/api": "^1.9.0",
    "reflect-metadata": "^0.2.2"
  },
  "optionalDependencies": {
@@ -8,9 +8,6 @@ importers:

  .:
    dependencies:
-      '@opentelemetry/api':
-        specifier: ^1.9.0
-        version: 1.9.1
      apache-arrow:
        specifier: '>=15.0.0 <=18.1.0'
        version: 18.1.0
@@ -36,9 +33,6 @@ importers:
      '@napi-rs/cli':
        specifier: 3.7.0
        version: 3.7.0(@emnapi/core@1.10.0)(@emnapi/runtime@1.10.0)(@types/node@22.7.4)
-      '@opentelemetry/sdk-metrics':
-        specifier: ^1.30.0
-        version: 1.30.1(@opentelemetry/api@1.9.1)
      '@types/axios':
        specifier: ^0.14.0
        version: 0.14.4
@@ -1313,32 +1307,6 @@ packages:
  '@octokit/types@16.0.0':
    resolution: {integrity: sha512-sKq+9r1Mm4efXW1FCk7hFSeJo4QKreL/tTbR0rz/qx/r1Oa2VV83LTA/H/MuCOX7uCIJmQVRKBcbmWoySjAnSg==}

-  '@opentelemetry/api@1.9.1':
-    resolution: {integrity: sha512-gLyJlPHPZYdAk1JENA9LeHejZe1Ti77/pTeFm/nMXmQH/HFZlcS/O2XJB+L8fkbrNSqhdtlvjBVjxwUYanNH5Q==}
-    engines: {node: '>=8.0.0'}
-
-  '@opentelemetry/core@1.30.1':
-    resolution: {integrity: sha512-OOCM2C/QIURhJMuKaekP3TRBxBKxG/TWWA0TL2J6nXUtDnuCtccy49LUJF8xPFXMX+0LMcxFpCo8M9cGY1W6rQ==}
-    engines: {node: '>=14'}
-    peerDependencies:
-      '@opentelemetry/api': '>=1.0.0 <1.10.0'
-
-  '@opentelemetry/resources@1.30.1':
-    resolution: {integrity: sha512-5UxZqiAgLYGFjS4s9qm5mBVo433u+dSPUFWVWXmLAD4wB65oMCoXaJP1KJa9DIYYMeHu3z4BZcStG3LC593cWA==}
-    engines: {node: '>=14'}
-    peerDependencies:
-      '@opentelemetry/api': '>=1.0.0 <1.10.0'
-
-  '@opentelemetry/sdk-metrics@1.30.1':
-    resolution: {integrity: sha512-q9zcZ0Okl8jRgmy7eNW3Ku1XSgg3sDLa5evHZpCwjspw7E8Is4K/haRPDJrBcX3YSn/Y7gUvFnByNYEKQNbNog==}
-    engines: {node: '>=14'}
-    peerDependencies:
-      '@opentelemetry/api': '>=1.3.0 <1.10.0'
-
-  '@opentelemetry/semantic-conventions@1.28.0':
-    resolution: {integrity: sha512-lp4qAiMTD4sNWW4DbKLBkfiMZ4jbAboJIGOQr5DvciMRI494OapieI9qiODpOt0XBr1LjIDy1xAGAnVs5supTA==}
-    engines: {node: '>=14'}
-
  '@protobufjs/aspromise@1.1.2':
    resolution: {integrity: sha512-j+gKExEuLmKwvz3OgROXtrJ2UG2x8Ch2YZUxahh+s1F2HZ+wAceUNLkvy6zKCPVRkU++ZWQrdxsUeQXmcg4uoQ==}

@@ -4957,27 +4925,6 @@ snapshots:
    dependencies:
      '@octokit/openapi-types': 27.0.0

-  '@opentelemetry/api@1.9.1': {}
-
-  '@opentelemetry/core@1.30.1(@opentelemetry/api@1.9.1)':
-    dependencies:
-      '@opentelemetry/api': 1.9.1
-      '@opentelemetry/semantic-conventions': 1.28.0
-
-  '@opentelemetry/resources@1.30.1(@opentelemetry/api@1.9.1)':
-    dependencies:
-      '@opentelemetry/api': 1.9.1
-      '@opentelemetry/core': 1.30.1(@opentelemetry/api@1.9.1)
-      '@opentelemetry/semantic-conventions': 1.28.0
-
-  '@opentelemetry/sdk-metrics@1.30.1(@opentelemetry/api@1.9.1)':
-    dependencies:
-      '@opentelemetry/api': 1.9.1
-      '@opentelemetry/core': 1.30.1(@opentelemetry/api@1.9.1)
-      '@opentelemetry/resources': 1.30.1(@opentelemetry/api@1.9.1)
-
-  '@opentelemetry/semantic-conventions@1.28.0': {}
-
  '@protobufjs/aspromise@1.1.2':
    optional: true

@@ -12,7 +12,6 @@ mod header;
 mod index;
 mod iterator;
 pub mod merge;
-pub mod otel;
 pub mod permutation;
 mod query;
 pub mod remote;
@@ -1,119 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0
-// SPDX-FileCopyrightText: Copyright The LanceDB Authors
-
-//! Node.js bindings over [`lancedb::metrics_otel`].
-//!
-//! The aggregation, catalog, and histogram bucketing all live in the LanceDB
-//! core crate; this module only converts the core snapshot types into napi
-//! objects and exposes the three entry points to JavaScript, where
-//! `lancedb/otel.ts` bridges them into the user's OpenTelemetry `MeterProvider`.
-
-use std::collections::HashMap;
-
-use lancedb::metrics_otel::{MetricPoint as CoreMetricPoint, MetricValue};
-use napi_derive::napi;
-
-/// One cumulative histogram bucket: all samples with value `<= le`.
-#[napi(object)]
-pub struct MetricBucket {
-    /// The inclusive upper bound of the bucket, or `"+Inf"` for the final bucket.
-    pub le: String,
-    /// Cumulative number of samples less than or equal to `le`.
-    pub cumulative_count: f64,
-}
-
-/// One aggregated metric data point. For counters and gauges only `value` is
-/// set; for histograms `buckets` (cumulative `le` counts), `count`, and `sum`
-/// are set.
-#[napi(object)]
-pub struct MetricPoint {
-    pub name: String,
-    pub kind: String,
-    pub attributes: HashMap<String, String>,
-    pub value: Option<f64>,
-    pub buckets: Option<Vec<MetricBucket>>,
-    pub count: Option<f64>,
-    pub sum: Option<f64>,
-}
-
-impl From<CoreMetricPoint> for MetricPoint {
-    fn from(point: CoreMetricPoint) -> Self {
-        let kind = point.kind.as_str().to_string();
-        let (value, buckets, count, sum) = match point.value {
-            MetricValue::Scalar(v) => (Some(v), None, None, None),
-            MetricValue::Histogram {
-                buckets,
-                count,
-                sum,
-            } => (
-                None,
-                Some(
-                    buckets
-                        .into_iter()
-                        // Counts stay well within the f64-exact integer range
-                        // (2^53), so this cast is lossless in practice and keeps
-                        // the values plain JS numbers for OpenTelemetry.
-                        .map(|(le, cumulative_count)| MetricBucket {
-                            le,
-                            cumulative_count: cumulative_count as f64,
-                        })
-                        .collect(),
-                ),
-                Some(count as f64),
-                Some(sum),
-            ),
-        };
-        Self {
-            name: point.name,
-            kind,
-            attributes: point.attributes,
-            value,
-            buckets,
-            count,
-            sum,
-        }
-    }
-}
-
-/// A described metric, used by the JavaScript layer to create instruments up front.
-#[napi(object)]
-pub struct MetricDescription {
-    pub name: String,
-    pub kind: String,
-    pub unit: Option<String>,
-    pub description: String,
-}
-
-/// Install the LanceDB metrics recorder as the process-global `metrics` recorder.
-///
-/// Returns `true` if the recorder is installed (now or previously). Returns
-/// `false` if a *different* recorder is already installed — `metrics` allows
-/// only one global recorder per process, so LanceDB cannot coexist with another.
-#[napi]
-pub fn register_lancedb_metrics_recorder() -> bool {
-    lancedb::metrics_otel::register_metrics_recorder()
-}
-
-/// The catalog of described LanceDB metrics. Empty until the recorder is installed.
-#[napi]
-pub fn lancedb_metrics_catalog() -> Vec<MetricDescription> {
-    lancedb::metrics_otel::metrics_catalog()
-        .into_iter()
-        .map(|desc| MetricDescription {
-            name: desc.name,
-            kind: desc.kind.as_str().to_string(),
-            unit: desc.unit,
-            description: desc.description,
-        })
-        .collect()
-}
-
-/// A point-in-time snapshot of every recorded metric. Empty until the recorder
-/// is installed.
-#[napi]
-pub fn snapshot_lancedb_metrics() -> Vec<MetricPoint> {
-    lancedb::metrics_otel::snapshot_metrics()
-        .into_iter()
-        .map(MetricPoint::from)
-        .collect()
-}
@@ -411,16 +411,6 @@ impl Table {
            .default_error()
    }

-    #[napi(catch_unwind)]
-    pub async fn get_lsm_write_spec(&self) -> napi::Result<Option<LsmWriteSpec>> {
-        let spec = self
-            .inner_ref()?
-            .get_lsm_write_spec()
-            .await
-            .default_error()?;
-        Ok(spec.map(LsmWriteSpec::from))
-    }
-
    #[napi(catch_unwind)]
    pub async fn close_lsm_writers(&self) -> napi::Result<()> {
        self.inner_ref()?.close_lsm_writers().await.default_error()
@@ -738,47 +728,6 @@ impl TryFrom<LsmWriteSpec> for lancedb::table::LsmWriteSpec {
    }
 }

-impl From<lancedb::table::LsmWriteSpec> for LsmWriteSpec {
-    fn from(spec: lancedb::table::LsmWriteSpec) -> Self {
-        use lancedb::table::LsmWriteSpec as Native;
-        match spec {
-            Native::Bucket {
-                column,
-                num_buckets,
-                maintained_indexes,
-                writer_config_defaults,
-            } => Self {
-                spec_type: "bucket".to_string(),
-                column: Some(column),
-                num_buckets: Some(num_buckets),
-                maintained_indexes: Some(maintained_indexes),
-                writer_config_defaults: Some(writer_config_defaults),
-            },
-            Native::Identity {
-                column,
-                maintained_indexes,
-                writer_config_defaults,
-            } => Self {
-                spec_type: "identity".to_string(),
-                column: Some(column),
-                num_buckets: None,
-                maintained_indexes: Some(maintained_indexes),
-                writer_config_defaults: Some(writer_config_defaults),
-            },
-            Native::Unsharded {
-                maintained_indexes,
-                writer_config_defaults,
-            } => Self {
-                spec_type: "unsharded".to_string(),
-                column: None,
-                num_buckets: None,
-                maintained_indexes: Some(maintained_indexes),
-                writer_config_defaults: Some(writer_config_defaults),
-            },
-        }
-    }
-}
-
 /// Statistics about a compaction operation.
 #[napi(object)]
 #[derive(Clone, Debug)]
@@ -1,5 +1,5 @@
 [tool.bumpversion]
-current_version = "0.35.0-beta.1"
+current_version = "0.34.0-beta.6"
 parse = """(?x)
    (?P<major>0|[1-9]\\d*)\\.
    (?P<minor>0|[1-9]\\d*)\\.
@@ -1,6 +1,6 @@
 [package]
 name = "lancedb-python"
-version = "0.35.0-beta.1"
+version = "0.34.0-beta.6"
 publish = false
 edition.workspace = true
 description = "Python bindings for LanceDB"
@@ -47,6 +47,6 @@ pyo3-build-config = { version = "0.28", features = [
 ] }

 [features]
-default = ["remote", "lancedb/aws", "lancedb/gcs", "lancedb/azure", "lancedb/dynamodb", "lancedb/oss", "lancedb/huggingface", "lancedb/cos", "lancedb/goosefs", "lancedb/metrics-otel"]
+default = ["remote",  "lancedb/aws", "lancedb/gcs", "lancedb/azure", "lancedb/dynamodb", "lancedb/oss", "lancedb/huggingface"]
 fp16kernels = ["lancedb/fp16kernels"]
 remote = ["lancedb/remote"]
@@ -47,10 +47,6 @@ repository = "https://github.com/lancedb/lancedb"
 pylance = [
    "pylance>=5.0.0b5",
 ]
-# A library only needs the OpenTelemetry API; the application supplies and
-# configures the SDK (the actual exporter/reader). See
-# https://opentelemetry.io/docs/languages/python/instrumentation/
-otel = ["opentelemetry-api"]
 tests = [
    "aiohttp>=3.9.0",
    "boto3>=1.28.57",
@@ -65,7 +61,6 @@ tests = [
    "pylance>=5.0.0b5",
    "requests>=2.31.0",
    "datafusion>=52,<53",
-    "opentelemetry-sdk>=1.30.0",
 ]
 dev = [
    "ruff>=0.3.0",
@@ -149,14 +149,8 @@ def connect(

    For object storage, use a URI prefix:

-    >>> db = lancedb.connect(  # doctest: +SKIP
-    ...     "s3://my-bucket/lancedb",
-    ...     storage_options={
-    ...         "aws_access_key_id": "***",
-    ...         "aws_secret_access_key": "***",
-    ...         "aws_region": "us-east-1",
-    ...     },
-    ... )
+    >>> db = lancedb.connect("s3://my-bucket/lancedb",
+    ...                      storage_options={"aws_access_key_id": "***"})

    For tests and temporary data, use an in-memory database:

@@ -30,25 +30,6 @@ IvfHnswPq: type[HnswPq] = HnswPq
 IvfHnswSq: type[HnswSq] = HnswSq
 IvfHnswFlat: type[HnswFlat] = HnswFlat

-class MetricPoint:
-    name: str
-    kind: str
-    attributes: Dict[str, str]
-    value: Optional[float]
-    buckets: Optional[List[Tuple[str, int]]]
-    count: Optional[int]
-    sum: Optional[float]
-
-class MetricDescription:
-    name: str
-    kind: str
-    unit: Optional[str]
-    description: str
-
-def register_lancedb_metrics_recorder() -> bool: ...
-def lancedb_metrics_catalog() -> List[MetricDescription]: ...
-def snapshot_lancedb_metrics() -> List[MetricPoint]: ...
-
 class PyExpr:
    """A type-safe DataFusion expression node (Rust-side handle)."""

@@ -248,7 +229,6 @@ class Table:
    async def set_unenforced_primary_key(self, columns: List[str]) -> None: ...
    async def set_lsm_write_spec(self, spec: LsmWriteSpec) -> None: ...
    async def unset_lsm_write_spec(self) -> None: ...
-    async def get_lsm_write_spec(self) -> Optional[LsmWriteSpec]: ...
    async def close_lsm_writers(self) -> None: ...
    @property
    def tags(self) -> Tags: ...
@@ -2,7 +2,7 @@
 # SPDX-FileCopyrightText: Copyright The LanceDB Authors

 from functools import cached_property
-from typing import TYPE_CHECKING, Any, List, Optional, Sequence, Union
+from typing import TYPE_CHECKING, List, Optional, Sequence, Union

 import numpy as np

@@ -56,16 +56,6 @@ class OllamaEmbeddings(TextEmbeddingFunction):
        embeddings = self._compute_embedding(texts)
        return list(embeddings)

-    def __getstate__(self) -> dict[str, Any]:
-        state = super().__getstate__()
-        state["__dict__"] = {
-            k: v for k, v in state["__dict__"].items() if k != "_ollama_client"
-        }
-        return state
-
-    def __setstate__(self, state: dict[str, Any]) -> None:
-        super().__setstate__(state)
-
    @cached_property
    def _ollama_client(self) -> "ollama.Client":
        ollama = attempt_import_or_raise("ollama")
@@ -1,170 +0,0 @@
-# SPDX-License-Identifier: Apache-2.0
-# SPDX-FileCopyrightText: Copyright The LanceDB Authors
-
-"""Bridge LanceDB's internal metrics into OpenTelemetry.
-
-LanceDB (through Lance core) publishes metrics (currently object store request
-counts, bytes, latency, errors, and throttles) through the Rust ``metrics``
-facade. This module installs a process-global recorder that aggregates them and
-registers OpenTelemetry observable instruments that report the aggregated values
-into the user's ``MeterProvider``.
-
-The bridge is generic: every metric LanceDB describes is surfaced automatically,
-with no per-metric Python code. Histograms have no asynchronous OpenTelemetry
-instrument, so each is exported Prometheus-style as cumulative ``le`` buckets
-plus ``_count`` and ``_sum`` observable counters.
-"""
-
-from __future__ import annotations
-
-import warnings
-from typing import TYPE_CHECKING, Optional
-
-from ._lancedb import (
-    lancedb_metrics_catalog,
-    register_lancedb_metrics_recorder,
-    snapshot_lancedb_metrics,
-)
-
-if TYPE_CHECKING:
-    from opentelemetry.metrics import MeterProvider
-
-_INSTRUMENTED = False
-
-
-def instrument_lancedb_metrics(
-    meter_provider: Optional["MeterProvider"] = None,
-) -> bool:
-    """Register LanceDB metrics as OpenTelemetry observable instruments.
-
-    Installs a process-global metrics recorder and creates one observable
-    instrument per LanceDB metric on the given (or global) ``MeterProvider``. The
-    user's configured ``MetricReader`` then collects them on its own schedule.
-
-    Counters and gauges map directly to observable counters/gauges. Each
-    histogram is exported as cumulative ``le`` bucket counts (``<name>_bucket``,
-    with an ``le`` attribute) plus ``<name>_count`` and ``<name>_sum``.
-
-    Parameters
-    ----------
-    meter_provider : opentelemetry.metrics.MeterProvider, optional
-        The provider to register instruments on. Defaults to the global provider
-        from ``opentelemetry.metrics.get_meter_provider()``.
-
-    Returns
-    -------
-    bool
-        ``True`` if the recorder is installed and instruments are registered.
-        ``False`` if a different ``metrics`` recorder is already installed in
-        this process (``metrics`` permits only one global recorder), in which
-        case a warning is emitted and no instruments are created.
-
-    Notes
-    -----
-    Requires the OpenTelemetry API (``pip install lancedb[otel]``) and, to
-    actually export, an OpenTelemetry SDK (``pip install opentelemetry-sdk``)
-    configured by the application. Calling this more than once is safe;
-    instruments are created only on the first successful call.
-    """
-    global _INSTRUMENTED
-
-    try:
-        from opentelemetry.metrics import Observation, get_meter_provider
-    except ImportError as exc:
-        raise ImportError(
-            "instrument_lancedb_metrics requires the OpenTelemetry API/SDK. "
-            "Install it with `pip install lancedb[otel]` or "
-            "`pip install opentelemetry-sdk`."
-        ) from exc
-
-    if not register_lancedb_metrics_recorder():
-        warnings.warn(
-            "Could not install the LanceDB metrics recorder: another `metrics` "
-            "recorder is already installed in this process. LanceDB metrics will "
-            "not be exported via OpenTelemetry.",
-            stacklevel=2,
-        )
-        return False
-
-    if _INSTRUMENTED:
-        return True
-
-    provider = meter_provider or get_meter_provider()
-    meter = provider.get_meter("lancedb")
-
-    def scalar_callback(metric_name: str):
-        def callback(_options):
-            return [
-                Observation(point.value, point.attributes)
-                for point in snapshot_lancedb_metrics()
-                if point.name == metric_name and point.value is not None
-            ]
-
-        return callback
-
-    def bucket_callback(metric_name: str):
-        def callback(_options):
-            observations = []
-            for point in snapshot_lancedb_metrics():
-                if point.name != metric_name or point.buckets is None:
-                    continue
-                for le, cumulative in point.buckets:
-                    attributes = dict(point.attributes)
-                    attributes["le"] = le
-                    observations.append(Observation(cumulative, attributes))
-            return observations
-
-        return callback
-
-    def field_callback(metric_name: str, field: str):
-        def callback(_options):
-            observations = []
-            for point in snapshot_lancedb_metrics():
-                if point.name != metric_name:
-                    continue
-                value = getattr(point, field)
-                if value is not None:
-                    observations.append(Observation(value, point.attributes))
-            return observations
-
-        return callback
-
-    for desc in lancedb_metrics_catalog():
-        unit = desc.unit or ""
-        if desc.kind == "counter":
-            meter.create_observable_counter(
-                desc.name,
-                callbacks=[scalar_callback(desc.name)],
-                unit=unit,
-                description=desc.description,
-            )
-        elif desc.kind == "gauge":
-            meter.create_observable_gauge(
-                desc.name,
-                callbacks=[scalar_callback(desc.name)],
-                unit=unit,
-                description=desc.description,
-            )
-        elif desc.kind == "histogram":
-            # `_bucket` and `_count` observe cumulative sample counts, not the
-            # histogram's measured quantity, so they are unitless; only `_sum`
-            # carries the histogram's unit.
-            meter.create_observable_counter(
-                f"{desc.name}_bucket",
-                callbacks=[bucket_callback(desc.name)],
-                description=f"{desc.description} (cumulative buckets)",
-            )
-            meter.create_observable_counter(
-                f"{desc.name}_count",
-                callbacks=[field_callback(desc.name, "count")],
-                description=f"{desc.description} (count)",
-            )
-            meter.create_observable_counter(
-                f"{desc.name}_sum",
-                callbacks=[field_callback(desc.name, "sum")],
-                unit=unit,
-                description=f"{desc.description} (sum)",
-            )
-
-    _INSTRUMENTED = True
-    return True
@@ -11,7 +11,7 @@ import pyarrow as pa
 from ._lancedb import async_permutation_builder, PermutationReader
 from .table import LanceTable, Table
 from .background_loop import LOOP
-from .util import batch_to_tensor, batch_to_tensor_dict, batch_to_tensor_rows
+from .util import batch_to_tensor, batch_to_tensor_rows
 from typing import Any, Callable, Iterator, Literal, Optional, TYPE_CHECKING, Union

 if TYPE_CHECKING:
@@ -946,7 +946,6 @@ class Permutation:
            "pandas",
            "arrow",
            "torch",
-            "torch_row",
            "torch_col",
            "polars",
        ],
@@ -962,19 +961,15 @@ class Permutation:
        - "python_col" - the batch will be a dict of lists (one entry per column)
        - "pandas" - the batch will be a pandas DataFrame
        - "arrow" - the batch will be a pyarrow RecordBatch
-        - "torch" - the batch will be a list of per-row dicts mapping column
-          name to a 0-D torch tensor. Works with the default
-          ``torch.utils.data.DataLoader`` collate, which stacks the per-row
-          dicts back into a dict of batched tensors.
-        - "torch_row" - the batch will be a list of tensors, one per row
+        - "torch" - the batch will be a list of tensors, one per row
        - "torch_col" - the batch will be a 2D torch tensor (first dim indexes columns)
        - "polars" - the batch will be a polars DataFrame

        Conversion may or may not involve a data copy.  Lance uses Arrow internally
        and so it is able to zero-copy to the arrow and polars formats.

-        Conversion to torch and torch_col will be zero-copy but will only support a
-        subset of data types (numeric types).
+        Conversion to torch_col will be zero-copy but will only support a subset of data
+        types (numeric types).

        Conversion to numpy and/or pandas will typically be zero-copy for numeric
        types.  Conversion of strings, lists, and structs will require creating python
@@ -995,8 +990,6 @@ class Permutation:
        elif format == "arrow":
            return self.with_transform(Transforms.arrow2arrow)
        elif format == "torch":
-            return self.with_transform(batch_to_tensor_dict)
-        elif format == "torch_row":
            return self.with_transform(batch_to_tensor_rows)
        elif format == "torch_col":
            return self.with_transform(batch_to_tensor)
@@ -912,10 +912,6 @@ class RemoteTable(Table):
        """Not supported on LanceDB Cloud."""
        return LOOP.run(self._table.unset_lsm_write_spec())

-    def get_lsm_write_spec(self) -> Optional["LsmWriteSpec"]:
-        """Read the installed LsmWriteSpec, or ``None``."""
-        return LOOP.run(self._table.get_lsm_write_spec())
-
    def close_lsm_writers(self) -> None:
        """No-op on LanceDB Cloud (no local shard writers)."""
        return LOOP.run(self._table.close_lsm_writers())
@@ -3759,11 +3759,6 @@ class LanceTable(Table):
        [`AsyncTable.unset_lsm_write_spec`][lancedb.AsyncTable.unset_lsm_write_spec]."""
        return LOOP.run(self._table.unset_lsm_write_spec())

-    def get_lsm_write_spec(self) -> Optional["LsmWriteSpec"]:
-        """Read the installed LsmWriteSpec, or ``None``. See
-        [`AsyncTable.get_lsm_write_spec`][lancedb.AsyncTable.get_lsm_write_spec]."""
-        return LOOP.run(self._table.get_lsm_write_spec())
-
    def close_lsm_writers(self) -> None:
        """Close cached MemWAL shard writers. See
        [`AsyncTable.close_lsm_writers`][lancedb.AsyncTable.close_lsm_writers]."""
@@ -4422,17 +4417,6 @@ class AsyncTable:
        """
        await self._inner.unset_lsm_write_spec()

-    async def get_lsm_write_spec(self) -> Optional["LsmWriteSpec"]:
-        """Read the LsmWriteSpec currently installed on this table.
-
-        Returns ``None`` when the MemWAL LSM write path is not enabled (no
-        spec has been set, or it was removed with `unset_lsm_write_spec`).
-        The returned spec — including its ``maintained_indexes`` and
-        ``writer_config_defaults`` — mirrors what was passed to
-        `set_lsm_write_spec`.
-        """
-        return await self._inner.get_lsm_write_spec()
-
    async def close_lsm_writers(self) -> None:
        """Drain and close any cached MemWAL shard writers for this table.

@@ -177,10 +177,7 @@ def flatten_columns(tbl: pa.Table, flatten: Optional[Union[int, bool]] = None):
                continue
            else:
                break
-    # `bool` is a subclass of `int`, so guard against it explicitly: `flatten=False`
-    # (and `None`) must mean "do not flatten" rather than falling into the integer
-    # branch and raising on the `flatten <= 0` check.
-    elif isinstance(flatten, int) and not isinstance(flatten, bool):
+    elif isinstance(flatten, int):
        if flatten <= 0:
            raise ValueError(
                "Please specify a positive integer for flatten or the boolean "
@@ -518,38 +515,3 @@ def batch_to_tensor_rows(batch: pa.RecordBatch):
    stacked = torch.tensor(numpy.column_stack(columns))
    rows = list(stacked.unbind(dim=0))
    return rows
-
-
-def batch_to_tensor_dict(batch: pa.RecordBatch):
-    """
-    Convert a PyArrow RecordBatch to a list of per-row dicts of PyTorch Tensors.
-
-    Each column is first converted to a 1-D tensor (zero-copy via DLPack), then
-    sliced per row. The result is a list whose length is ``batch.num_rows`` and
-    whose items are dicts keyed by column name. This shape composes directly
-    with PyTorch's default ``DataLoader`` collate, which stacks the per-row
-    dicts back into a dict of batched tensors.
-
-    Fails if torch is not installed.
-    Fails if a column's data type is not supported by PyTorch.
-
-    Parameters
-    ----------
-    batch : pa.RecordBatch
-        The record batch to convert.
-
-    Returns
-    -------
-    list[dict[str, torch.Tensor]]
-        One per-row dict per row in the batch. Each dict maps column name to a
-        0-D tensor view into the column.
-    """
-    torch = attempt_import_or_raise("torch", "torch")
-    tensors = {
-        name: torch.from_dlpack(col)
-        for name, col in zip(batch.schema.names, batch.columns)
-    }
-    return [
-        {name: tensor[i] for name, tensor in tensors.items()}
-        for i in range(batch.num_rows)
-    ]
@@ -2,7 +2,6 @@
 # SPDX-FileCopyrightText: Copyright The LanceDB Authors

 import os
-import pickle
 from typing import List, Optional, Union
 from unittest.mock import MagicMock, patch

@@ -592,22 +591,6 @@ def test_openai_no_retry_on_401(mock_sleep):
    assert mock_sleep.call_count == 0


-def test_ollama_embeddings_pickle():
-    """OllamaEmbeddings must pickle even after the cached client is created."""
-    registry = get_registry()
-    model = registry.get("ollama").create(name="nomic-embed-text")
-
-    # Simulate accessing the cached client, which stores it on the instance.
-    model.__dict__["_ollama_client"] = MagicMock()
-
-    pickled = pickle.dumps(model)
-    restored = pickle.loads(pickled)
-
-    assert restored.name == "nomic-embed-text"
-    assert restored.host == "http://localhost:11434"
-    assert "_ollama_client" not in restored.__dict__
-
-
 def test_url_retrieve_downloads_image():
    """
    Embedding functions like open-clip, siglip, and jinaai use url_retrieve()
@@ -11,7 +11,6 @@ import lancedb
 import pyarrow as pa
 import pytest
 from lancedb._lancedb import LsmWriteSpec
-from lancedb.index import BTree

 SCHEMA = pa.schema(
    [
@@ -137,76 +136,3 @@ def test_lsm_write_spec_identity_and_writer_config_defaults():
    s = s.with_writer_config_defaults({"durable_write": "false"})
    assert s.writer_config_defaults == {"durable_write": "false"}
    assert "durable_write" in repr(s)
-
-
-def test_get_lsm_write_spec(tmp_path):
-    _db, table = _make_table(tmp_path)
-    table.set_unenforced_primary_key("id")
-
-    # None when nothing is installed.
-    assert table.get_lsm_write_spec() is None
-
-    # A real scalar index is needed to name it as a maintained index.
-    table.create_index("id", config=BTree())
-    idx_name = table.list_indices()[0].name
-
-    # Bucket spec round-trips, including maintained indexes and writer config
-    # defaults.
-    table.set_lsm_write_spec(
-        LsmWriteSpec.bucket("id", 4)
-        .with_maintained_indexes([idx_name])
-        .with_writer_config_defaults({"durable_write": "false"})
-    )
-    spec = table.get_lsm_write_spec()
-    assert spec is not None
-    assert spec.spec_type == "bucket"
-    assert spec.column == "id"
-    assert spec.num_buckets == 4
-    assert spec.maintained_indexes == [idx_name]
-    assert spec.writer_config_defaults == {"durable_write": "false"}
-
-    # After unset, None again.
-    table.unset_lsm_write_spec()
-    assert table.get_lsm_write_spec() is None
-
-    # Identity round-trips (column recovered from the schema).
-    table.set_lsm_write_spec(LsmWriteSpec.identity("id"))
-    spec = table.get_lsm_write_spec()
-    assert spec.spec_type == "identity"
-    assert spec.column == "id"
-    table.unset_lsm_write_spec()
-
-    # Unsharded round-trips (no routing column).
-    table.set_lsm_write_spec(LsmWriteSpec.unsharded())
-    spec = table.get_lsm_write_spec()
-    assert spec.spec_type == "unsharded"
-    assert spec.column is None
-
-
-@pytest.mark.asyncio
-async def test_async_get_lsm_write_spec(tmp_path):
-    db = await lancedb.connect_async(
-        tmp_path, read_consistency_interval=timedelta(seconds=0)
-    )
-    table = await db.create_table(
-        "t",
-        pa.RecordBatchReader.from_batches(SCHEMA, [_batch(["seed"], [0])]),
-    )
-
-    assert await table.get_lsm_write_spec() is None
-
-    # A real scalar index is needed to name it as a maintained index.
-    await table.create_index("id", config=BTree())
-    idx_name = (await table.list_indices())[0].name
-
-    await table.set_lsm_write_spec(
-        LsmWriteSpec.bucket("id", 8).with_maintained_indexes([idx_name])
-    )
-    spec = await table.get_lsm_write_spec()
-    assert spec is not None
-    assert spec.spec_type == "bucket"
-    assert spec.column == "id"
-    assert spec.num_buckets == 8
-    assert spec.maintained_indexes == [idx_name]
-    await table.unset_lsm_write_spec()
-    assert await table.get_lsm_write_spec() is None
@@ -935,41 +935,14 @@ def test_transform_fn(mem_db):
    try:
        import torch

-        # "torch" returns a list of per-row dicts. Default DataLoader collate
-        # stacks the per-row dicts back into a dict of batched tensors.
-        torch_perm = permutation.with_format("torch")
-        torch_batch = list(torch_perm.iter(10, skip_last_batch=False))[0]
-        assert isinstance(torch_batch, list)
-        assert len(torch_batch) == 10
-        assert isinstance(torch_batch[0], dict)
-        assert set(torch_batch[0].keys()) == {"id", "value"}
-        assert isinstance(torch_batch[0]["id"], torch.Tensor)
-        assert torch_batch[0]["id"].dtype == torch.int64
-
-        rows = torch_perm.__getitems__([0, 1, 2])
-        assert isinstance(rows, list)
-        assert len(rows) == 3
-        assert isinstance(rows[0], dict)
-        assert set(rows[0].keys()) == {"id", "value"}
-        assert isinstance(rows[0]["id"], torch.Tensor)
-
-        # "torch_row" returns a list of tensors, one per row.
-        torch_rows = list(
-            permutation.with_format("torch_row").iter(10, skip_last_batch=False)
+        torch_result = list(
+            permutation.with_format("torch").iter(10, skip_last_batch=False)
        )[0]
-        assert isinstance(torch_rows, list)
-        assert len(torch_rows) == 10
-        assert isinstance(torch_rows[0], torch.Tensor)
-        assert torch_rows[0].shape == (2,)
-        assert torch_rows[0].dtype == torch.int64
-
-        # "torch_col" stacks columns into a single 2D tensor.
-        torch_col = list(
-            permutation.with_format("torch_col").iter(10, skip_last_batch=False)
-        )[0]
-        assert isinstance(torch_col, torch.Tensor)
-        assert torch_col.shape == (2, 10)
-        assert torch_col.dtype == torch.int64
+        assert isinstance(torch_result, list)
+        assert len(torch_result) == 10
+        assert isinstance(torch_result[0], torch.Tensor)
+        assert torch_result[0].shape == (2,)
+        assert torch_result[0].dtype == torch.int64
    except ImportError:
        # Skip check if torch is not installed
        pass
@@ -7,8 +7,7 @@ Tests for S3 bucket names containing dots.
 Related issue: https://github.com/lancedb/lancedb/issues/1898

 These tests validate the early error checking for S3 bucket names with dots.
-When validation succeeds, eager namespace initialization may still fail later
-because these tests intentionally do not provide real S3 credentials.
+No actual S3 connection is made - validation happens before connection.
 """

 import pytest
@@ -21,13 +20,6 @@ BUCKET_WITH_DOTS_AND_AWS_REGION = ("s3://my.bucket.name", {"aws_region": "us-eas
 BUCKET_WITHOUT_DOTS = "s3://my-bucket/path"


-def assert_not_rejected_for_bucket_dots(connect):
-    try:
-        connect()
-    except ValueError as err:
-        assert "contains dots" not in str(err)
-
-
 class TestS3BucketWithDotsSync:
    """Tests for connect()."""

@@ -35,22 +27,19 @@ class TestS3BucketWithDotsSync:
        with pytest.raises(ValueError, match="contains dots"):
            lancedb.connect(BUCKET_WITH_DOTS)

-    def test_bucket_with_dots_and_region_is_not_rejected(self):
+    def test_bucket_with_dots_and_region_passes(self):
        uri, opts = BUCKET_WITH_DOTS_AND_REGION
-        assert_not_rejected_for_bucket_dots(
-            lambda: lancedb.connect(uri, storage_options=opts)
-        )
+        db = lancedb.connect(uri, storage_options=opts)
+        assert db is not None

-    def test_bucket_with_dots_and_aws_region_is_not_rejected(self):
+    def test_bucket_with_dots_and_aws_region_passes(self):
        uri, opts = BUCKET_WITH_DOTS_AND_AWS_REGION
-        assert_not_rejected_for_bucket_dots(
-            lambda: lancedb.connect(uri, storage_options=opts)
-        )
+        db = lancedb.connect(uri, storage_options=opts)
+        assert db is not None

-    def test_bucket_without_dots_is_not_rejected(self):
-        assert_not_rejected_for_bucket_dots(
-            lambda: lancedb.connect(BUCKET_WITHOUT_DOTS)
-        )
+    def test_bucket_without_dots_passes(self):
+        db = lancedb.connect(BUCKET_WITHOUT_DOTS)
+        assert db is not None


 class TestS3BucketWithDotsAsync:
@@ -62,24 +51,18 @@ class TestS3BucketWithDotsAsync:
            await lancedb.connect_async(BUCKET_WITH_DOTS)

    @pytest.mark.asyncio
-    async def test_bucket_with_dots_and_region_is_not_rejected(self):
+    async def test_bucket_with_dots_and_region_passes(self):
        uri, opts = BUCKET_WITH_DOTS_AND_REGION
-        try:
-            await lancedb.connect_async(uri, storage_options=opts)
-        except ValueError as err:
-            assert "contains dots" not in str(err)
+        db = await lancedb.connect_async(uri, storage_options=opts)
+        assert db is not None

    @pytest.mark.asyncio
-    async def test_bucket_with_dots_and_aws_region_is_not_rejected(self):
+    async def test_bucket_with_dots_and_aws_region_passes(self):
        uri, opts = BUCKET_WITH_DOTS_AND_AWS_REGION
-        try:
-            await lancedb.connect_async(uri, storage_options=opts)
-        except ValueError as err:
-            assert "contains dots" not in str(err)
+        db = await lancedb.connect_async(uri, storage_options=opts)
+        assert db is not None

    @pytest.mark.asyncio
-    async def test_bucket_without_dots_is_not_rejected(self):
-        try:
-            await lancedb.connect_async(BUCKET_WITHOUT_DOTS)
-        except ValueError as err:
-            assert "contains dots" not in str(err)
+    async def test_bucket_without_dots_passes(self):
+        db = await lancedb.connect_async(BUCKET_WITHOUT_DOTS)
+        assert db is not None
@@ -148,47 +148,15 @@ def test_permutation_dataloader(mem_db):
    for batch in dataloader:
        assert batch["a"].size(0) == 10

-    # "torch" produces a list of per-row dicts per batch. The default
-    # DataLoader collate stacks the per-row dicts back into a batched dict.
-    torch_perm = permutation.with_format("torch")
-    batch = next(torch_perm.iter(10, skip_last_batch=False))
-    assert isinstance(batch, list)
-    assert len(batch) == 10
-    assert isinstance(batch[0], dict)
-    assert isinstance(batch[0]["a"], torch.Tensor)
-    rows = torch_perm.__getitems__([0, 1, 2])
-    assert isinstance(rows, list)
-    assert len(rows) == 3
-    assert isinstance(rows[0], dict)
-    assert isinstance(rows[0]["a"], torch.Tensor)
-    dataloader = torch.utils.data.DataLoader(torch_perm, batch_size=10, shuffle=True)
-    for batch in dataloader:
-        assert isinstance(batch, dict)
-        assert batch["a"].shape == (10,)
-    # Spawn-based workers exercise the pickle round-trip path: the new
-    # transform-as-list shape must survive pickling so workers produce the
-    # same per-row dicts the parent does.
-    spawn_loader = torch.utils.data.DataLoader(
-        torch_perm,
-        batch_size=10,
-        num_workers=2,
-        multiprocessing_context="spawn",
-    )
-    for batch in spawn_loader:
-        assert isinstance(batch, dict)
-        assert batch["a"].shape == (10,)
-
-    # "torch_row" returns a list of row tensors. Works with the default
-    # DataLoader collate (stacks rows into 2D).
-    row_perm = permutation.with_format("torch_row")
-    dataloader = torch.utils.data.DataLoader(row_perm, batch_size=10, shuffle=True)
+    permutation = permutation.with_format("torch")
+    dataloader = torch.utils.data.DataLoader(permutation, batch_size=10, shuffle=True)
    for batch in dataloader:
        assert batch.size(0) == 10
        assert batch.size(1) == 1

-    col_perm = permutation.with_format("torch_col")
+    permutation = permutation.with_format("torch_col")
    dataloader = torch.utils.data.DataLoader(
-        col_perm, collate_fn=lambda x: x, batch_size=10, shuffle=True
+        permutation, collate_fn=lambda x: x, batch_size=10, shuffle=True
    )
    for batch in dataloader:
        assert batch.size(0) == 1
@@ -25,42 +25,10 @@ import pandas as pd
 import polars as pl
 import pytest
 import lancedb
-from lancedb.util import flatten_columns, get_uri_scheme, join_uri, value_to_sql
+from lancedb.util import get_uri_scheme, join_uri, value_to_sql
 from utils import exception_output


-def _struct_table() -> pa.Table:
-    return pa.table(
-        {
-            "id": [1, 2],
-            "nested": pa.array([{"a": 1, "b": 2}, {"a": 3, "b": 4}]),
-        }
-    )
-
-
-def test_flatten_columns():
-    tbl = _struct_table()
-
-    # None / False mean "do not flatten": the struct column is preserved.
-    # `False` is a regression guard: because bool is a subclass of int it used
-    # to fall into the integer branch and raise ValueError (see issue).
-    for no_flatten in (None, False):
-        result = flatten_columns(tbl, no_flatten)
-        assert result.column_names == ["id", "nested"]
-
-    # True flattens all nested levels.
-    flattened = flatten_columns(tbl, True)
-    assert flattened.column_names == ["id", "nested.a", "nested.b"]
-
-    # A positive integer flattens up to that depth.
-    flattened = flatten_columns(tbl, 1)
-    assert flattened.column_names == ["id", "nested.a", "nested.b"]
-
-    # Non-positive integers are still rejected.
-    with pytest.raises(ValueError):
-        flatten_columns(tbl, 0)
-
-
 def test_normalize_uri():
    uris = [
        "relative/path",
@@ -27,7 +27,6 @@ pub mod header;
 pub mod index;
 pub mod namespace;
 pub mod oauth;
-pub mod otel;
 pub mod permutation;
 pub mod query;
 pub mod runtime;
@@ -62,15 +61,6 @@ pub fn _lancedb(_py: Python, m: &Bound<'_, PyModule>) -> PyResult<()> {
    m.add_class::<PyAsyncPermutationBuilder>()?;
    m.add_class::<PyPermutationReader>()?;
    m.add_class::<PyExpr>()?;
-    // OpenTelemetry metrics bridge
-    m.add_class::<otel::PyMetricPoint>()?;
-    m.add_class::<otel::PyMetricDescription>()?;
-    m.add_function(wrap_pyfunction!(
-        otel::register_lancedb_metrics_recorder,
-        m
-    )?)?;
-    m.add_function(wrap_pyfunction!(otel::lancedb_metrics_catalog, m)?)?;
-    m.add_function(wrap_pyfunction!(otel::snapshot_lancedb_metrics, m)?)?;
    m.add_function(wrap_pyfunction!(connect, m)?)?;
    m.add_function(wrap_pyfunction!(connect_namespace, m)?)?;
    m.add_function(wrap_pyfunction!(connect_namespace_client, m)?)?;
@@ -1,96 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0
-// SPDX-FileCopyrightText: Copyright The LanceDB Authors
-
-//! Python-facing wrappers over [`lancedb::metrics_otel`].
-//!
-//! The aggregation, catalog, and histogram bucketing all live in the LanceDB
-//! core crate; this module only converts the core snapshot types into PyO3
-//! classes and exposes the three entry points to Python, where
-//! `lancedb/otel.py` bridges them into the user's OpenTelemetry `MeterProvider`.
-
-use std::collections::HashMap;
-
-use lancedb::metrics_otel::{MetricPoint, MetricValue};
-use pyo3::prelude::*;
-
-/// One metric data point exposed to Python. For counters and gauges only
-/// `value` is set; for histograms `buckets` (cumulative `le` counts), `count`,
-/// and `sum` are set.
-#[pyclass(name = "MetricPoint", get_all)]
-pub struct PyMetricPoint {
-    name: String,
-    kind: String,
-    attributes: HashMap<String, String>,
-    value: Option<f64>,
-    buckets: Option<Vec<(String, u64)>>,
-    count: Option<u64>,
-    sum: Option<f64>,
-}
-
-impl From<MetricPoint> for PyMetricPoint {
-    fn from(point: MetricPoint) -> Self {
-        let kind = point.kind.as_str().to_string();
-        let (value, buckets, count, sum) = match point.value {
-            MetricValue::Scalar(v) => (Some(v), None, None, None),
-            MetricValue::Histogram {
-                buckets,
-                count,
-                sum,
-            } => (None, Some(buckets), Some(count), Some(sum)),
-        };
-        Self {
-            name: point.name,
-            kind,
-            attributes: point.attributes,
-            value,
-            buckets,
-            count,
-            sum,
-        }
-    }
-}
-
-/// A described metric, used by the Python layer to create instruments up front.
-#[pyclass(name = "MetricDescription", get_all)]
-pub struct PyMetricDescription {
-    name: String,
-    kind: String,
-    unit: Option<String>,
-    description: String,
-}
-
-/// Install the LanceDB metrics recorder as the process-global `metrics` recorder.
-///
-/// Returns `True` if the recorder is installed (now or previously). Returns
-/// `False` if a *different* recorder is already installed — `metrics` allows
-/// only one global recorder per process, so LanceDB cannot coexist with another.
-#[pyfunction]
-pub fn register_lancedb_metrics_recorder() -> bool {
-    lancedb::metrics_otel::register_metrics_recorder()
-}
-
-/// The catalog of described LanceDB metrics. Empty until the recorder is installed.
-#[pyfunction]
-pub fn lancedb_metrics_catalog() -> Vec<PyMetricDescription> {
-    lancedb::metrics_otel::metrics_catalog()
-        .into_iter()
-        .map(|desc| PyMetricDescription {
-            name: desc.name,
-            kind: desc.kind.as_str().to_string(),
-            unit: desc.unit,
-            description: desc.description,
-        })
-        .collect()
-}
-
-/// A point-in-time snapshot of every recorded metric. Empty until the recorder
-/// is installed.
-///
-/// The read is lock-free but not O(1): it walks every registered series and
-/// allocates owned copies of their names and labels. The GIL is released across
-/// that work so a periodic collection doesn't stall other Python threads.
-#[pyfunction]
-pub fn snapshot_lancedb_metrics(py: Python<'_>) -> Vec<PyMetricPoint> {
-    let points = py.detach(lancedb::metrics_otel::snapshot_metrics);
-    points.into_iter().map(PyMetricPoint::from).collect()
-}
@@ -322,12 +322,6 @@ impl From<LsmWriteSpec> for lancedb::table::LsmWriteSpec {
    }
 }

-impl From<lancedb::table::LsmWriteSpec> for LsmWriteSpec {
-    fn from(inner: lancedb::table::LsmWriteSpec) -> Self {
-        Self { inner }
-    }
-}
-
 #[pyclass(get_all, from_py_object)]
 #[derive(Clone, Debug)]
 pub struct AddColumnsResult {
@@ -1035,14 +1029,6 @@ impl Table {
        })
    }

-    pub fn get_lsm_write_spec(self_: PyRef<'_, Self>) -> PyResult<Bound<'_, PyAny>> {
-        let inner = self_.inner_ref()?.clone();
-        future_into_py(self_.py(), async move {
-            let spec = inner.get_lsm_write_spec().await.infer_error()?;
-            Ok(spec.map(LsmWriteSpec::from))
-        })
-    }
-
    pub fn close_lsm_writers(self_: PyRef<'_, Self>) -> PyResult<Bound<'_, PyAny>> {
        let inner = self_.inner_ref()?.clone();
        future_into_py(self_.py(), async move {
@@ -1,101 +0,0 @@
-# SPDX-License-Identifier: Apache-2.0
-# SPDX-FileCopyrightText: Copyright The LanceDB Authors
-
-import lancedb
-import pyarrow as pa
-import pytest
-
-# The metrics recorder is process-global and installed once, so the whole
-# bridge is exercised in a single test to avoid cross-test global-state coupling.
-
-
-def _metrics_by_name(reader):
-    data = reader.get_metrics_data()
-    result = {}
-    for resource_metrics in data.resource_metrics:
-        for scope_metrics in resource_metrics.scope_metrics:
-            for metric in scope_metrics.metrics:
-                result[metric.name] = metric
-    return result
-
-
-def test_instrument_lancedb_metrics_exports_object_store_metrics(tmp_path):
-    pytest.importorskip("opentelemetry.sdk.metrics")
-    from lancedb.otel import instrument_lancedb_metrics
-    from opentelemetry.sdk.metrics import MeterProvider
-    from opentelemetry.sdk.metrics.export import InMemoryMetricReader
-
-    reader = InMemoryMetricReader()
-    provider = MeterProvider(metric_readers=[reader])
-    assert instrument_lancedb_metrics(provider)
-
-    # The catalog is populated once the recorder is installed.
-    from lancedb._lancedb import lancedb_metrics_catalog
-
-    catalog = {desc.name: desc for desc in lancedb_metrics_catalog()}
-    # Every metric kind emitted by the object store must be described so it is
-    # surfaced by the bridge (counter, histogram, and gauge).
-    assert catalog["lance_object_store_requests_total"].kind == "counter"
-    assert catalog["lance_object_store_request_duration_seconds"].kind == "histogram"
-    assert catalog["lance_object_store_in_flight_requests"].kind == "gauge"
-    assert catalog["lance_object_store_retryable_responses_total"].kind == "counter"
-
-    # Generate object store activity on the local filesystem (scheme "file").
-    db = lancedb.connect(str(tmp_path))
-    table = db.create_table("t", pa.table({"id": pa.array(range(256))}))
-    assert table.count_rows() == 256
-    assert table.to_arrow().num_rows == 256
-
-    metrics = _metrics_by_name(reader)
-
-    requests = metrics["lance_object_store_requests_total"]
-    points = list(requests.data.data_points)
-    assert points, "expected at least one request data point"
-    # Object store metrics are labelled by `operation` and `base` (the store
-    # scheme, e.g. "file", by default).
-    assert all("base" in p.attributes and "operation" in p.attributes for p in points)
-    assert sum(p.value for p in points) > 0
-
-    # Histograms are decomposed into bucket / count / sum observable counters.
-    bucket = metrics["lance_object_store_request_duration_seconds_bucket"]
-    bucket_points = list(bucket.data.data_points)
-    assert bucket_points
-    assert all("le" in p.attributes for p in bucket_points)
-    # The implicit +Inf bucket must be present and is the cumulative maximum.
-    assert any(p.attributes["le"] == "+Inf" for p in bucket_points)
-
-    count = metrics["lance_object_store_request_duration_seconds_count"]
-    assert sum(p.value for p in count.data.data_points) > 0
-
-    # The `_sum` instrument must also be wired and report positive latency.
-    duration_sum = metrics["lance_object_store_request_duration_seconds_sum"]
-    assert sum(p.value for p in duration_sum.data.data_points) > 0
-
-    # Unit handling: only `_sum` keeps the histogram's unit (seconds); `_bucket`
-    # and `_count` observe cumulative counts and are unitless.
-    assert duration_sum.unit == "s"
-    assert bucket.unit == ""
-    assert count.unit == ""
-
-
-def test_snapshot_empty_before_install_is_safe():
-    # snapshot is callable regardless of installation state and never raises.
-    from lancedb._lancedb import snapshot_lancedb_metrics
-
-    assert isinstance(snapshot_lancedb_metrics(), list)
-
-
-def test_instrument_warns_when_recorder_unavailable(monkeypatch):
-    # A foreign `metrics` recorder already installed -> register returns False;
-    # instrument_lancedb_metrics must warn and return False without instrumenting.
-    pytest.importorskip("opentelemetry.sdk.metrics")
-    import lancedb.otel as otel
-    from opentelemetry.sdk.metrics import MeterProvider
-    from opentelemetry.sdk.metrics.export import InMemoryMetricReader
-
-    monkeypatch.setattr(otel, "register_lancedb_metrics_recorder", lambda: False)
-
-    reader = InMemoryMetricReader()
-    provider = MeterProvider(metric_readers=[reader])
-    with pytest.warns(UserWarning, match="recorder"):
-        assert otel.instrument_lancedb_metrics(provider) is False
@@ -780,7 +780,7 @@ name = "cuda-bindings"
 version = "13.3.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "cuda-pathfinder", marker = "(python_full_version < '3.14' and sys_platform == 'emscripten') or (python_full_version < '3.14' and sys_platform == 'win32') or (sys_platform != 'emscripten' and sys_platform != 'win32')" },
+    { name = "cuda-pathfinder" },
 ]
 wheels = [
    { url = "https://files.pythonhosted.org/packages/a9/21/8464d133752951c154feafb3b65c297e7d80f301183d220bec4c830f1441/cuda_bindings-13.3.1-cp310-cp310-manylinux_2_24_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:120fcc53d57903df529c3486962c56528cba5b7d6c57c99537320ed9922c8b86", size = 6073403, upload-time = "2026-05-29T23:11:36.22Z" },
@@ -815,37 +815,37 @@ wheels = [

 [package.optional-dependencies]
 cublas = [
-    { name = "nvidia-cublas", marker = "(python_full_version < '3.14' and sys_platform == 'win32') or sys_platform == 'linux'" },
+    { name = "nvidia-cublas", marker = "sys_platform == 'linux' or sys_platform == 'win32'" },
 ]
 cudart = [
-    { name = "nvidia-cuda-runtime", marker = "(python_full_version < '3.14' and sys_platform == 'win32') or sys_platform == 'linux'" },
+    { name = "nvidia-cuda-runtime", marker = "sys_platform == 'linux' or sys_platform == 'win32'" },
 ]
 cufft = [
-    { name = "nvidia-cufft", marker = "(python_full_version < '3.14' and sys_platform == 'win32') or sys_platform == 'linux'" },
+    { name = "nvidia-cufft", marker = "sys_platform == 'linux' or sys_platform == 'win32'" },
 ]
 cufile = [
    { name = "nvidia-cufile", marker = "sys_platform == 'linux'" },
 ]
 cupti = [
-    { name = "nvidia-cuda-cupti", marker = "(python_full_version < '3.14' and sys_platform == 'win32') or sys_platform == 'linux'" },
+    { name = "nvidia-cuda-cupti", marker = "sys_platform == 'linux' or sys_platform == 'win32'" },
 ]
 curand = [
-    { name = "nvidia-curand", marker = "(python_full_version < '3.14' and sys_platform == 'win32') or sys_platform == 'linux'" },
+    { name = "nvidia-curand", marker = "sys_platform == 'linux' or sys_platform == 'win32'" },
 ]
 cusolver = [
-    { name = "nvidia-cusolver", marker = "(python_full_version < '3.14' and sys_platform == 'win32') or sys_platform == 'linux'" },
+    { name = "nvidia-cusolver", marker = "sys_platform == 'linux' or sys_platform == 'win32'" },
 ]
 cusparse = [
-    { name = "nvidia-cusparse", marker = "(python_full_version < '3.14' and sys_platform == 'win32') or sys_platform == 'linux'" },
+    { name = "nvidia-cusparse", marker = "sys_platform == 'linux' or sys_platform == 'win32'" },
 ]
 nvjitlink = [
-    { name = "nvidia-nvjitlink", marker = "(python_full_version < '3.14' and sys_platform == 'win32') or sys_platform == 'linux'" },
+    { name = "nvidia-nvjitlink", marker = "sys_platform == 'linux' or sys_platform == 'win32'" },
 ]
 nvrtc = [
-    { name = "nvidia-cuda-nvrtc", marker = "(python_full_version < '3.14' and sys_platform == 'win32') or sys_platform == 'linux'" },
+    { name = "nvidia-cuda-nvrtc", marker = "sys_platform == 'linux' or sys_platform == 'win32'" },
 ]
 nvtx = [
-    { name = "nvidia-nvtx", marker = "(python_full_version < '3.14' and sys_platform == 'win32') or sys_platform == 'linux'" },
+    { name = "nvidia-nvtx", marker = "sys_platform == 'linux' or sys_platform == 'win32'" },
 ]

 [[package]]
@@ -1909,9 +1909,6 @@ embeddings = [
    { name = "sentencepiece" },
    { name = "torch" },
 ]
-otel = [
-    { name = "opentelemetry-api" },
-]
 pylance = [
    { name = "pylance" },
 ]
@@ -1926,7 +1923,6 @@ tests = [
    { name = "boto3" },
    { name = "datafusion" },
    { name = "duckdb" },
-    { name = "opentelemetry-sdk" },
    { name = "pandas", version = "2.2.3", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version < '3.11'" },
    { name = "pandas", version = "2.3.3", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version >= '3.11' and python_full_version < '3.14'" },
    { name = "pandas", version = "3.0.3", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version >= '3.14'" },
@@ -1967,8 +1963,6 @@ requires-dist = [
    { name = "open-clip-torch", marker = "extra == 'clip'" },
    { name = "open-clip-torch", marker = "extra == 'embeddings'", specifier = ">=2.20.0" },
    { name = "openai", marker = "extra == 'embeddings'", specifier = ">=1.6.1" },
-    { name = "opentelemetry-api", marker = "extra == 'otel'" },
-    { name = "opentelemetry-sdk", marker = "extra == 'tests'", specifier = ">=1.30.0" },
    { name = "overrides", marker = "python_full_version < '3.12'", specifier = ">=0.7" },
    { name = "packaging", specifier = ">=23.0" },
    { name = "pandas", marker = "extra == 'tests'", specifier = ">=1.4" },
@@ -2000,7 +1994,7 @@ requires-dist = [
    { name = "transformers", marker = "extra == 'siglip'", specifier = ">=4.41.0" },
    { name = "typing-extensions", marker = "python_full_version < '3.11' and extra == 'dev'", specifier = ">=4.0.0" },
 ]
-provides-extras = ["azure", "clip", "dev", "docs", "embeddings", "otel", "pylance", "siglip", "tests"]
+provides-extras = ["azure", "clip", "dev", "docs", "embeddings", "pylance", "siglip", "tests"]

 [[package]]
 name = "lomond"
@@ -2781,7 +2775,7 @@ name = "nvidia-cudnn-cu13"
 version = "9.19.0.56"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "nvidia-cublas", marker = "(python_full_version < '3.14' and sys_platform == 'emscripten') or (python_full_version < '3.14' and sys_platform == 'win32') or (sys_platform != 'emscripten' and sys_platform != 'win32')" },
+    { name = "nvidia-cublas" },
 ]
 wheels = [
    { url = "https://files.pythonhosted.org/packages/f1/84/26025437c1e6b61a707442184fa0c03d083b661adf3a3eecfd6d21677740/nvidia_cudnn_cu13-9.19.0.56-py3-none-manylinux_2_27_aarch64.whl", hash = "sha256:6ed29ffaee1176c612daf442e4dd6cfeb6a0caa43ddcbeb59da94953030b1be4", size = 433781201, upload-time = "2026-02-03T20:40:53.805Z" },
@@ -2793,7 +2787,7 @@ name = "nvidia-cufft"
 version = "12.0.0.61"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "nvidia-nvjitlink", marker = "(python_full_version < '3.14' and sys_platform == 'emscripten') or (python_full_version < '3.14' and sys_platform == 'win32') or (sys_platform != 'emscripten' and sys_platform != 'win32')" },
+    { name = "nvidia-nvjitlink" },
 ]
 wheels = [
    { url = "https://files.pythonhosted.org/packages/8b/ae/f417a75c0259e85c1d2f83ca4e960289a5f814ed0cea74d18c353d3e989d/nvidia_cufft-12.0.0.61-py3-none-manylinux2014_aarch64.manylinux_2_17_aarch64.whl", hash = "sha256:2708c852ef8cd89d1d2068bdbece0aa188813a0c934db3779b9b1faa8442e5f5", size = 214053554, upload-time = "2025-09-04T08:31:38.196Z" },
@@ -2823,9 +2817,9 @@ name = "nvidia-cusolver"
 version = "12.0.4.66"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "nvidia-cublas", marker = "(python_full_version < '3.14' and sys_platform == 'emscripten') or (python_full_version < '3.14' and sys_platform == 'win32') or (sys_platform != 'emscripten' and sys_platform != 'win32')" },
-    { name = "nvidia-cusparse", marker = "(python_full_version < '3.14' and sys_platform == 'emscripten') or (python_full_version < '3.14' and sys_platform == 'win32') or (sys_platform != 'emscripten' and sys_platform != 'win32')" },
-    { name = "nvidia-nvjitlink", marker = "(python_full_version < '3.14' and sys_platform == 'emscripten') or (python_full_version < '3.14' and sys_platform == 'win32') or (sys_platform != 'emscripten' and sys_platform != 'win32')" },
+    { name = "nvidia-cublas" },
+    { name = "nvidia-cusparse" },
+    { name = "nvidia-nvjitlink" },
 ]
 wheels = [
    { url = "https://files.pythonhosted.org/packages/c8/c3/b30c9e935fc01e3da443ec0116ed1b2a009bb867f5324d3f2d7e533e776b/nvidia_cusolver-12.0.4.66-py3-none-manylinux_2_27_aarch64.whl", hash = "sha256:02c2457eaa9e39de20f880f4bd8820e6a1cfb9f9a34f820eb12a155aa5bc92d2", size = 223467760, upload-time = "2025-09-04T08:33:04.222Z" },
@@ -2837,7 +2831,7 @@ name = "nvidia-cusparse"
 version = "12.6.3.3"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "nvidia-nvjitlink", marker = "(python_full_version < '3.14' and sys_platform == 'emscripten') or (python_full_version < '3.14' and sys_platform == 'win32') or (sys_platform != 'emscripten' and sys_platform != 'win32')" },
+    { name = "nvidia-nvjitlink" },
 ]
 wheels = [
    { url = "https://files.pythonhosted.org/packages/f8/94/5c26f33738ae35276672f12615a64bd008ed5be6d1ebcb23579285d960a9/nvidia_cusparse-12.6.3.3-py3-none-manylinux2014_aarch64.manylinux_2_17_aarch64.whl", hash = "sha256:80bcc4662f23f1054ee334a15c72b8940402975e0eab63178fc7e670aa59472c", size = 162155568, upload-time = "2025-09-04T08:33:42.864Z" },
@@ -2940,45 +2934,6 @@ wheels = [
    { url = "https://files.pythonhosted.org/packages/f6/46/180e14be801a75bc13f234cb1b594b232adeb9c84e60a9ab1832e8333591/openai-2.40.0-py3-none-any.whl", hash = "sha256:2b205637ff214477f9ce9ab035e9f494db0e3fa8f1e599008953735fbf6ff1ff", size = 1350935, upload-time = "2026-06-01T21:48:21.462Z" },
 ]

-[[package]]
-name = "opentelemetry-api"
-version = "1.43.0"
-source = { registry = "https://pypi.org/simple" }
-dependencies = [
-    { name = "typing-extensions" },
-]
-sdist = { url = "https://files.pythonhosted.org/packages/ae/cc/e4c9584181f86494df0f6bdec1a4f3280c50db44704dc2a407e994fc87bb/opentelemetry_api-1.43.0.tar.gz", hash = "sha256:107d0d03857ea8fc7c5fcbbbd83f800c281f0d560553d61c1d675fccfd1761c1", size = 73476, upload-time = "2026-06-24T15:19:55.323Z" }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/17/83/6dba32b85f31868400440dc7ad2ca1eab94cbbf3a7b0459ed39f8311a9e2/opentelemetry_api-1.43.0-py3-none-any.whl", hash = "sha256:20acf45e9b21851926835292e4045d290acade1edd2ff3de86d2f069687ba1fd", size = 61912, upload-time = "2026-06-24T15:19:35.434Z" },
-]
-
-[[package]]
-name = "opentelemetry-sdk"
-version = "1.43.0"
-source = { registry = "https://pypi.org/simple" }
-dependencies = [
-    { name = "opentelemetry-api" },
-    { name = "opentelemetry-semantic-conventions" },
-    { name = "typing-extensions" },
-]
-sdist = { url = "https://files.pythonhosted.org/packages/3e/eb/5041074274ac0956b03637cc039d434569112468e875eddfcc9a0674ce06/opentelemetry_sdk-1.43.0.tar.gz", hash = "sha256:d8187c81c162df9913e4003dd6485f7390d9a24fc17026ec7387b8b8218b08e9", size = 254744, upload-time = "2026-06-24T15:20:08.467Z" }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/49/e3/b17be23af124201c9f52eececd4cc8ddfed1597d37b4ee771895d325805c/opentelemetry_sdk-1.43.0-py3-none-any.whl", hash = "sha256:d1323a547c1ce69d6a069a17a44b7da82bb8b332051ecb074041f87642c86823", size = 178852, upload-time = "2026-06-24T15:19:52.169Z" },
-]
-
-[[package]]
-name = "opentelemetry-semantic-conventions"
-version = "0.64b0"
-source = { registry = "https://pypi.org/simple" }
-dependencies = [
-    { name = "opentelemetry-api" },
-    { name = "typing-extensions" },
-]
-sdist = { url = "https://files.pythonhosted.org/packages/5a/30/5f26df29509eccd86b99b481ac9ffa39da49ba9577cc69071c552ae30447/opentelemetry_semantic_conventions-0.64b0.tar.gz", hash = "sha256:72f76fb2d1582d9d033dd1fcd84532e961e6ff3d90d24ba6fabc72975a83864c", size = 148340, upload-time = "2026-06-24T15:20:09.267Z" }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/f2/ca/23ba87a221b574a7c5a99d48849d80bfe8b047624681357e2b002e566187/opentelemetry_semantic_conventions-0.64b0-py3-none-any.whl", hash = "sha256:ea77e85e354b8f604ddbe5f3d9135216f982fa4d77e5859ac30f6d8a50505aa6", size = 203713, upload-time = "2026-06-24T15:19:53.339Z" },
-]
-
 [[package]]
 name = "overrides"
 version = "7.7.0"
@@ -1,6 +1,6 @@
 [package]
 name = "lancedb"
-version = "0.32.0-beta.0"
+version = "0.31.0-beta.6"
 edition.workspace = true
 description = "LanceDB: A serverless, low-latency vector database for AI applications"
 license.workspace = true
@@ -49,8 +49,6 @@ lance-encoding = { workspace = true }
 lance-arrow = { workspace = true }
 lance-namespace = { workspace = true }
 lance-namespace-impls = { workspace = true }
-metrics = { workspace = true, optional = true }
-metrics-util = { workspace = true, optional = true }
 moka = { workspace = true }
 pin-project = { workspace = true }
 tokio = { version = "1.23", features = ["rt-multi-thread", "sync"] }
@@ -130,12 +128,6 @@ azure = [
    "lance-namespace-impls/dir-azure",
    "lance-namespace-impls/credential-vendor-azure",
 ]
-cos = ["lance/tencent", "lance-io/tencent"]
-goosefs = [
-    "lance/goosefs",
-    "lance-io/goosefs",
-    "lance-namespace-impls/dir-goosefs",
-]
 huggingface = [
    "lance/huggingface",
    "lance-io/huggingface",
@@ -149,15 +141,6 @@ remote = [
    "lance-namespace-impls/rest",
    "lance-namespace-impls/rest-adapter",
 ]
-# Publish LanceDB's internal metrics (currently object store request counts,
-# bytes, latency, errors, and throttles) through the `metrics` crate facade,
-# and re-export the `metrics` crate as `lancedb::metrics`. Install any
-# `metrics`-compatible recorder to collect them.
-metrics = ["dep:metrics", "lance/metrics", "lance-io/metrics"]
-# Additional adapter on top of `metrics` that installs a process-global recorder
-# and exposes a pull-based snapshot/catalog API (see `lancedb::metrics_otel`)
-# for bridging metrics into OpenTelemetry or other pull-based exporters.
-metrics-otel = ["metrics", "dep:metrics-util"]
 fp16kernels = ["lance-linalg/fp16kernels"]
 s3-test = []
 bedrock = ["dep:aws-sdk-bedrockruntime"]
@@ -342,19 +342,6 @@ impl ListingDatabase {
        ))
    }

-    fn storage_base_uri(uri: &str) -> String {
-        let Ok(mut url) = url::Url::parse(uri) else {
-            return uri.to_string();
-        };
-        url.set_query(None);
-        let Some((storage_scheme, _commit_scheme)) = url.scheme().split_once('+') else {
-            return url.to_string();
-        };
-        let storage_scheme = storage_scheme.to_string();
-        let _ = url.set_scheme(&storage_scheme);
-        url.to_string()
-    }
-
    async fn prepare_namespace_root(
        uri: &str,
        storage_options: &HashMap<String, String>,
@@ -533,8 +520,6 @@ impl ListingDatabase {
                // will add a trailing '?' to the url
                url.set_query(None);

-                let storage_base_uri = Self::storage_base_uri(url.as_str());
-
                let table_base_uri = if let Some(store) = engine {
                    static WARN_ONCE: std::sync::Once = std::sync::Once::new();
                    WARN_ONCE.call_once(|| {
@@ -547,6 +532,8 @@ impl ListingDatabase {
                    url.to_string()
                };

+                let plain_uri = url.to_string();
+
                let session = request
                    .session
                    .clone()
@@ -563,13 +550,13 @@ impl ListingDatabase {
                };
                let (object_store, base_path) = ObjectStore::from_uri_and_params(
                    session.store_registry(),
-                    &storage_base_uri,
+                    &plain_uri,
                    &os_params,
                )
                .await?;
                if object_store.is_local() {
-                    Self::try_create_dir(&storage_base_uri).context(CreateDirSnafu {
-                        path: storage_base_uri.clone(),
+                    Self::try_create_dir(&plain_uri).context(CreateDirSnafu {
+                        path: plain_uri.clone(),
                    })?;
                }

@@ -583,7 +570,7 @@ impl ListingDatabase {
                };

                let namespace_database = Self::connect_namespace_database(
-                    &storage_base_uri,
+                    &table_base_uri,
                    options.storage_options.clone(),
                    request.namespace_client_properties.clone(),
                    request.read_consistency_interval,
@@ -1322,60 +1309,6 @@ mod tests {
        (tempdir, db)
    }

-    #[tokio::test]
-    async fn test_listing_database_root_ops_do_not_create_manifest() {
-        let tempdir = tempdir().unwrap();
-        let uri = tempdir.path().to_str().unwrap();
-
-        let request = ConnectRequest {
-            uri: uri.to_string(),
-            #[cfg(feature = "remote")]
-            client_config: Default::default(),
-            options: Default::default(),
-            namespace_client_properties: Default::default(),
-            manifest_enabled: false,
-            read_consistency_interval: None,
-            session: None,
-        };
-
-        let db = ListingDatabase::connect_with_options(&request)
-            .await
-            .unwrap();
-
-        assert!(!tempdir.path().join("__manifest").exists());
-
-        let schema = Arc::new(Schema::new(vec![Field::new("id", DataType::Int32, false)]));
-        db.create_table(CreateTableRequest {
-            name: "root_table".to_string(),
-            namespace_path: vec![],
-            data: Box::new(RecordBatch::new_empty(schema)) as Box<dyn Scannable>,
-            mode: CreateTableMode::Create,
-            write_options: Default::default(),
-            location: None,
-            namespace_client: None,
-        })
-        .await
-        .unwrap();
-
-        db.open_table(OpenTableRequest {
-            name: "root_table".to_string(),
-            namespace_path: vec![],
-            index_cache_size: None,
-            lance_read_params: None,
-            location: None,
-            namespace_client: None,
-            managed_versioning: None,
-        })
-        .await
-        .unwrap();
-
-        #[allow(deprecated)]
-        let table_names = db.table_names(TableNamesRequest::default()).await.unwrap();
-
-        assert_eq!(table_names, vec!["root_table".to_string()]);
-        assert!(!tempdir.path().join("__manifest").exists());
-    }
-
    #[tokio::test]
    async fn test_clone_table_basic() {
        let (_tempdir, db) = setup_database().await;
@@ -2350,24 +2283,6 @@ mod tests {
        assert_eq!(captured.as_deref(), Some("foo=bar"));
    }

-    #[test]
-    fn test_storage_base_uri_strips_commit_engine_scheme() {
-        assert_eq!(
-            ListingDatabase::storage_base_uri("s3+ddb://bucket/prefix?ddbTableName=commit_table"),
-            "s3://bucket/prefix"
-        );
-
-        assert_eq!(
-            ListingDatabase::storage_base_uri("s3://bucket/prefix?foo=bar"),
-            "s3://bucket/prefix"
-        );
-
-        assert_eq!(
-            ListingDatabase::storage_base_uri("/tmp/lancedb"),
-            "/tmp/lancedb"
-        );
-    }
-
    /// Regression: connecting via a URL-style URI (which goes through
    /// `url::Url::parse` and the `query_pairs_mut()` path) must not
    /// append a trailing `?` to per-table URIs when the input URI has
@@ -33,11 +33,6 @@
 //! - `remote` - Enable remote client to connect to LanceDB cloud.
 //! - `huggingface` - Enable HuggingFace Hub integration for loading datasets from the Hub.
 //! - `fp16kernels` - Enable FP16 kernels for faster vector search on CPU.
-//! - `metrics` - Publish LanceDB's internal metrics through the
-//!   [`metrics`](https://docs.rs/metrics) crate facade and re-export that crate.
-//!   Install any `metrics`-compatible recorder to collect them.
-//! - `metrics-otel` - Add a pull-based adapter (the `metrics_otel` module) over
-//!   the `metrics` facade for bridging metrics into OpenTelemetry or similar.
 //!
 //! ### Quick Start
 //!
@@ -179,8 +174,6 @@ pub mod expr;
 pub mod index;
 pub mod io;
 pub mod ipc;
-#[cfg(feature = "metrics-otel")]
-pub mod metrics_otel;
 #[cfg(feature = "polars")]
 mod polars_arrow_convertors;
 pub mod query;
@@ -201,12 +194,6 @@ pub use connection::{ConnectNamespaceBuilder, Connection};
 pub use error::{Error, Result};
 use lance_index::vector::ApproxMode as LanceApproxMode;
 use lance_linalg::distance::DistanceType as LanceDistanceType;
-/// Re-export of the [`metrics`](https://docs.rs/metrics) crate facade. Enable
-/// the `metrics` feature to publish LanceDB's internal metrics; install any
-/// `metrics`-compatible recorder to collect them. See also [`metrics_otel`] for
-/// a built-in pull-based adapter.
-#[cfg(feature = "metrics")]
-pub use metrics;
 pub use table::Table;

 #[derive(Debug, Copy, Clone, PartialEq, Serialize, Deserialize, Default)]
@@ -1,594 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0
-// SPDX-FileCopyrightText: Copyright The LanceDB Authors
-
-//! A pull-based adapter over the [`metrics`] crate facade.
-//!
-//! LanceDB (through Lance core) publishes metrics — currently object store
-//! request counts, bytes, latency, errors, and throttles — through the global
-//! [`metrics`] facade without choosing a backend. This module installs a
-//! process-global [`metrics::Recorder`] that aggregates those metrics into
-//! lock-free cumulative storage and exposes that state as a snapshot, so callers
-//! can feed it into a pull-based exporter such as OpenTelemetry.
-//!
-//! The language bindings build their OpenTelemetry integrations on top of the
-//! three public entry points here: [`register_metrics_recorder`],
-//! [`metrics_catalog`], and [`snapshot_metrics`].
-//!
-//! The recorder is *generic*: it records any metric emitted through the facade,
-//! keyed by name and labels. Object store metrics are the first producer, but
-//! nothing here is specific to them. New metrics flow through automatically;
-//! they only need to be described (via the `metrics` `describe_*!` macros) so
-//! callers can discover their name, kind, and unit up front.
-//!
-//! ## Why pull, not push
-//!
-//! OpenTelemetry collects on its own schedule and invokes observable-instrument
-//! callbacks at collection time. Cumulative counters map directly onto OTel's
-//! `ObservableCounter` semantics. So the adapter aggregates in Rust and lets the
-//! collection thread pull a [`snapshot`](snapshot_metrics) on demand.
-//!
-//! ## Histograms
-//!
-//! OpenTelemetry has no asynchronous histogram instrument, so histograms cannot
-//! be pulled as-is. Instead each histogram is aggregated into fixed buckets
-//! (Prometheus style) and exposed as cumulative `le` bucket counts plus a count
-//! and sum, which the caller can surface as observable counters.
-
-use std::collections::HashMap;
-use std::sync::atomic::{AtomicU64, Ordering};
-use std::sync::{Arc, LazyLock, Mutex, OnceLock, RwLock};
-
-use metrics::{Counter, Gauge, Histogram, Key, KeyName, Metadata, Recorder, SharedString, Unit};
-use metrics_util::registry::{Registry, Storage};
-
-/// Bucket boundaries used when a histogram has no registered bounds. Covers a
-/// broad latency range so unknown histograms still produce useful buckets.
-const DEFAULT_BOUNDS: &[f64] = &[
-    0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1.0, 2.5, 5.0, 10.0, 30.0, 60.0, 120.0, 300.0,
-];
-
-/// The kind of a metric, mirroring the three `metrics` instrument types.
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub enum MetricKind {
-    Counter,
-    Gauge,
-    Histogram,
-}
-
-impl MetricKind {
-    /// The lowercase name of this kind (`"counter"`, `"gauge"`, `"histogram"`).
-    pub fn as_str(self) -> &'static str {
-        match self {
-            Self::Counter => "counter",
-            Self::Gauge => "gauge",
-            Self::Histogram => "histogram",
-        }
-    }
-}
-
-/// A described metric, used to create one exporter instrument per metric up front.
-#[derive(Debug, Clone)]
-pub struct MetricDescription {
-    /// The metric name (e.g. `lance_object_store_requests_total`).
-    pub name: String,
-    /// Whether the metric is a counter, gauge, or histogram.
-    pub kind: MetricKind,
-    /// The canonical unit label, if the producer described one.
-    pub unit: Option<String>,
-    /// Human-readable help text describing the metric.
-    pub description: String,
-}
-
-/// The aggregated value of a metric at snapshot time.
-#[derive(Debug, Clone)]
-pub enum MetricValue {
-    /// A counter or gauge value.
-    Scalar(f64),
-    /// A histogram, decomposed into cumulative `le` buckets plus count and sum.
-    Histogram {
-        /// Cumulative `(le, count)` buckets, ending in the implicit `+Inf` bucket.
-        buckets: Vec<(String, u64)>,
-        /// Total number of recorded samples.
-        count: u64,
-        /// Sum of all recorded sample values.
-        sum: f64,
-    },
-}
-
-/// One aggregated metric data point exposed to a caller.
-#[derive(Debug, Clone)]
-pub struct MetricPoint {
-    /// The metric name.
-    pub name: String,
-    /// Whether the point is a counter, gauge, or histogram.
-    pub kind: MetricKind,
-    /// The label set for this point (e.g. `operation`, `base`).
-    pub attributes: HashMap<String, String>,
-    /// The aggregated value.
-    pub value: MetricValue,
-}
-
-/// Catalog of described metrics, keyed by metric name.
-static CATALOG: LazyLock<Mutex<HashMap<String, CatalogEntry>>> =
-    LazyLock::new(|| Mutex::new(HashMap::new()));
-
-struct CatalogEntry {
-    kind: MetricKind,
-    unit: Option<String>,
-    description: String,
-}
-
-/// Per-metric histogram bucket boundaries, keyed by metric name. Producers
-/// register their recommended bounds before any metric is recorded.
-static HISTOGRAM_BOUNDS: LazyLock<RwLock<HashMap<String, Arc<[f64]>>>> =
-    LazyLock::new(|| RwLock::new(HashMap::new()));
-
-/// The installed recorder's registry, available once installation succeeds.
-static REGISTRY: OnceLock<Arc<Registry<Key, LanceStorage>>> = OnceLock::new();
-
-fn bounds_for(name: &str) -> Arc<[f64]> {
-    HISTOGRAM_BOUNDS
-        .read()
-        .unwrap()
-        .get(name)
-        .cloned()
-        .unwrap_or_else(|| Arc::from(DEFAULT_BOUNDS))
-}
-
-/// A histogram that buckets samples at record time into fixed boundaries,
-/// keeping a cumulative count and sum. Bucketing eagerly keeps memory bounded
-/// (unlike retaining raw samples) and produces Prometheus-style `le` buckets.
-struct BucketedHistogram {
-    /// Sorted, finite upper bounds. A sample `v` falls in the first bucket whose
-    /// bound is `>= v`; samples above all bounds fall in the implicit `+Inf`
-    /// bucket stored as the final entry of `counts`.
-    bounds: Arc<[f64]>,
-    /// Per-bucket (non-cumulative) counts; length is `bounds.len() + 1`.
-    counts: Box<[AtomicU64]>,
-    count: AtomicU64,
-    /// Running sum of recorded values, stored as `f64` bits (there is no atomic
-    /// f64, so the bit pattern is held in a `u64`; see [`Self::add_to_sum`]).
-    sum_bits: AtomicU64,
-}
-
-// All atomics here use `Ordering::Relaxed`: each metric counter is independent,
-// so no happens-before relationship is needed between them, and a snapshot
-// reader tolerates slightly stale values. This matches `metrics_util`'s
-// `AtomicStorage`.
-
-impl BucketedHistogram {
-    fn new(bounds: Arc<[f64]>) -> Self {
-        let counts = (0..bounds.len() + 1)
-            .map(|_| AtomicU64::new(0))
-            .collect::<Vec<_>>()
-            .into_boxed_slice();
-        Self {
-            bounds,
-            counts,
-            count: AtomicU64::new(0),
-            sum_bits: AtomicU64::new(0),
-        }
-    }
-
-    fn add_to_sum(&self, value: f64) {
-        // No atomic offers an f64 add, so read the current bit pattern, add in
-        // float space, and CAS it back, retrying if another thread won the race.
-        let mut current = self.sum_bits.load(Ordering::Relaxed);
-        loop {
-            let updated = (f64::from_bits(current) + value).to_bits();
-            match self.sum_bits.compare_exchange_weak(
-                current,
-                updated,
-                Ordering::Relaxed,
-                Ordering::Relaxed,
-            ) {
-                Ok(_) => break,
-                Err(actual) => current = actual,
-            }
-        }
-    }
-
-    /// Cumulative `le` buckets, total count, and sum at this instant.
-    fn snapshot(&self) -> MetricValue {
-        let mut cumulative = 0u64;
-        let mut buckets = Vec::with_capacity(self.bounds.len() + 1);
-        for (i, bound) in self.bounds.iter().enumerate() {
-            cumulative += self.counts[i].load(Ordering::Relaxed);
-            buckets.push((format!("{}", bound), cumulative));
-        }
-        cumulative += self.counts[self.bounds.len()].load(Ordering::Relaxed);
-        buckets.push(("+Inf".to_string(), cumulative));
-        MetricValue::Histogram {
-            buckets,
-            count: self.count.load(Ordering::Relaxed),
-            sum: f64::from_bits(self.sum_bits.load(Ordering::Relaxed)),
-        }
-    }
-}
-
-impl metrics::HistogramFn for BucketedHistogram {
-    fn record(&self, value: f64) {
-        let idx = self.bounds.partition_point(|&bound| bound < value);
-        self.counts[idx].fetch_add(1, Ordering::Relaxed);
-        self.count.fetch_add(1, Ordering::Relaxed);
-        self.add_to_sum(value);
-    }
-}
-
-/// Storage backing the registry. Counters and gauges are plain atomics (as in
-/// `metrics_util`'s `AtomicStorage`); histograms use [`BucketedHistogram`].
-struct LanceStorage;
-
-impl Storage<Key> for LanceStorage {
-    type Counter = Arc<AtomicU64>;
-    type Gauge = Arc<AtomicU64>;
-    type Histogram = Arc<BucketedHistogram>;
-
-    fn counter(&self, _key: &Key) -> Self::Counter {
-        Arc::new(AtomicU64::new(0))
-    }
-
-    fn gauge(&self, _key: &Key) -> Self::Gauge {
-        // The `metrics` facade writes the f64 bit pattern into this `u64` (the
-        // snapshot decodes it with `f64::from_bits`), matching `AtomicStorage`.
-        // `0` decodes to `0.0`, the correct initial value.
-        Arc::new(AtomicU64::new(0))
-    }
-
-    fn histogram(&self, key: &Key) -> Self::Histogram {
-        Arc::new(BucketedHistogram::new(bounds_for(key.name())))
-    }
-}
-
-struct LanceRecorder {
-    registry: Arc<Registry<Key, LanceStorage>>,
-}
-
-impl LanceRecorder {
-    fn describe(
-        &self,
-        key: KeyName,
-        kind: MetricKind,
-        unit: Option<Unit>,
-        description: SharedString,
-    ) {
-        CATALOG.lock().unwrap().insert(
-            key.as_str().to_string(),
-            CatalogEntry {
-                kind,
-                unit: unit.map(|u| u.as_canonical_label().to_string()),
-                description: description.into_owned(),
-            },
-        );
-    }
-}
-
-impl Recorder for LanceRecorder {
-    fn describe_counter(&self, key: KeyName, unit: Option<Unit>, description: SharedString) {
-        self.describe(key, MetricKind::Counter, unit, description);
-    }
-
-    fn describe_gauge(&self, key: KeyName, unit: Option<Unit>, description: SharedString) {
-        self.describe(key, MetricKind::Gauge, unit, description);
-    }
-
-    fn describe_histogram(&self, key: KeyName, unit: Option<Unit>, description: SharedString) {
-        self.describe(key, MetricKind::Histogram, unit, description);
-    }
-
-    fn register_counter(&self, key: &Key, _metadata: &Metadata<'_>) -> Counter {
-        self.registry
-            .get_or_create_counter(key, |c| Counter::from_arc(c.clone()))
-    }
-
-    fn register_gauge(&self, key: &Key, _metadata: &Metadata<'_>) -> Gauge {
-        self.registry
-            .get_or_create_gauge(key, |g| Gauge::from_arc(g.clone()))
-    }
-
-    fn register_histogram(&self, key: &Key, _metadata: &Metadata<'_>) -> Histogram {
-        self.registry
-            .get_or_create_histogram(key, |h| Histogram::from_arc(h.clone()))
-    }
-}
-
-/// Register the recommended histogram bounds for every metric-emitting
-/// subsystem. New subsystems add their `histogram_bounds()` here.
-fn register_bounds() {
-    let mut bounds = HISTOGRAM_BOUNDS.write().unwrap();
-    for (name, values) in lance_io::object_store::metrics::histogram_bounds() {
-        bounds.insert((*name).to_string(), Arc::from(*values));
-    }
-}
-
-/// Describe every metric-emitting subsystem so the catalog is populated. Must
-/// run after the recorder is installed. New subsystems add their
-/// `describe_metrics()` here.
-fn describe_all() {
-    lance_io::object_store::metrics::describe_metrics();
-}
-
-fn labels(key: &Key) -> HashMap<String, String> {
-    key.labels()
-        .map(|label| (label.key().to_string(), label.value().to_string()))
-        .collect()
-}
-
-fn collect_points(registry: &Registry<Key, LanceStorage>) -> Vec<MetricPoint> {
-    let mut points = Vec::new();
-    for (key, handle) in registry.get_counter_handles() {
-        points.push(MetricPoint {
-            name: key.name().to_string(),
-            kind: MetricKind::Counter,
-            attributes: labels(&key),
-            // OpenTelemetry observations are float; counts stay well within the
-            // f64-exact integer range (2^53), so this cast is lossless in practice.
-            value: MetricValue::Scalar(handle.load(Ordering::Relaxed) as f64),
-        });
-    }
-    for (key, handle) in registry.get_gauge_handles() {
-        points.push(MetricPoint {
-            name: key.name().to_string(),
-            kind: MetricKind::Gauge,
-            attributes: labels(&key),
-            value: MetricValue::Scalar(f64::from_bits(handle.load(Ordering::Relaxed))),
-        });
-    }
-    for (key, handle) in registry.get_histogram_handles() {
-        points.push(MetricPoint {
-            name: key.name().to_string(),
-            kind: MetricKind::Histogram,
-            attributes: labels(&key),
-            value: handle.snapshot(),
-        });
-    }
-    points
-}
-
-/// Install the LanceDB metrics recorder as the process-global `metrics` recorder.
-///
-/// Returns `true` if the recorder is installed (now or previously). Returns
-/// `false` if a *different* recorder is already installed — `metrics` allows
-/// only one global recorder per process, so LanceDB cannot coexist with another.
-pub fn register_metrics_recorder() -> bool {
-    if REGISTRY.get().is_some() {
-        return true;
-    }
-    let registry = Arc::new(Registry::new(LanceStorage));
-    let recorder = LanceRecorder {
-        registry: registry.clone(),
-    };
-    // Register bounds *before* installing the recorder. Bounds don't depend on
-    // the recorder, and once it is installed a concurrent histogram emission
-    // could otherwise create a handle with the fallback bounds and keep them for
-    // the process lifetime.
-    register_bounds();
-    match metrics::set_global_recorder(recorder) {
-        Ok(()) => {
-            let _ = REGISTRY.set(registry);
-            // Describe metrics only after install so the `describe_*!` macros
-            // route through this recorder and populate the catalog.
-            describe_all();
-            true
-        }
-        Err(_) => false,
-    }
-}
-
-/// The catalog of described LanceDB metrics. Empty until the recorder is installed.
-pub fn metrics_catalog() -> Vec<MetricDescription> {
-    CATALOG
-        .lock()
-        .unwrap()
-        .iter()
-        .map(|(name, entry)| MetricDescription {
-            name: name.clone(),
-            kind: entry.kind,
-            unit: entry.unit.clone(),
-            description: entry.description.clone(),
-        })
-        .collect()
-}
-
-/// A point-in-time snapshot of every recorded metric. Empty until the recorder
-/// is installed. The read is lock-free.
-pub fn snapshot_metrics() -> Vec<MetricPoint> {
-    let Some(registry) = REGISTRY.get() else {
-        return Vec::new();
-    };
-    collect_points(registry)
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use metrics::HistogramFn;
-
-    fn bucket_count(buckets: &[(String, u64)], le: &str) -> u64 {
-        buckets
-            .iter()
-            .find(|(b, _)| b == le)
-            .map(|(_, c)| *c)
-            .unwrap_or_else(|| panic!("no bucket with le={le}"))
-    }
-
-    #[test]
-    fn bucketed_histogram_records_cumulative_buckets() {
-        let hist = BucketedHistogram::new(Arc::from([0.1f64, 1.0, 10.0].as_slice()));
-        hist.record(0.05); // le=0.1
-        hist.record(0.5); // le=1
-        hist.record(0.5); // le=1
-        hist.record(50.0); // +Inf
-
-        let MetricValue::Histogram {
-            buckets,
-            count,
-            sum,
-        } = hist.snapshot()
-        else {
-            panic!("expected histogram");
-        };
-
-        // Buckets are cumulative (Prometheus `le` semantics).
-        assert_eq!(bucket_count(&buckets, "0.1"), 1);
-        assert_eq!(bucket_count(&buckets, "1"), 3);
-        assert_eq!(bucket_count(&buckets, "10"), 3);
-        assert_eq!(bucket_count(&buckets, "+Inf"), 4);
-        assert_eq!(count, 4);
-        assert!((sum - 51.05).abs() < 1e-9);
-    }
-
-    #[test]
-    fn bucketed_histogram_boundary_is_inclusive() {
-        let hist = BucketedHistogram::new(Arc::from([1.0f64].as_slice()));
-        hist.record(1.0); // exactly the bound -> le=1, not +Inf
-        let MetricValue::Histogram { buckets, .. } = hist.snapshot() else {
-            panic!("expected histogram");
-        };
-        assert_eq!(bucket_count(&buckets, "1"), 1);
-        assert_eq!(bucket_count(&buckets, "+Inf"), 1);
-    }
-
-    #[test]
-    fn bucketed_histogram_boundary_is_inclusive_mid_range() {
-        // A value equal to a middle bound lands in that bucket, not the next.
-        let hist = BucketedHistogram::new(Arc::from([0.1f64, 1.0, 10.0].as_slice()));
-        hist.record(1.0);
-        let MetricValue::Histogram { buckets, .. } = hist.snapshot() else {
-            panic!("expected histogram");
-        };
-        assert_eq!(bucket_count(&buckets, "0.1"), 0);
-        assert_eq!(bucket_count(&buckets, "1"), 1);
-        assert_eq!(bucket_count(&buckets, "10"), 1); // cumulative, so still 1
-        assert_eq!(bucket_count(&buckets, "+Inf"), 1);
-    }
-
-    #[test]
-    fn recorder_aggregates_counters_with_labels() {
-        let registry = Arc::new(Registry::new(LanceStorage));
-        let recorder = LanceRecorder {
-            registry: registry.clone(),
-        };
-        metrics::with_local_recorder(&recorder, || {
-            metrics::counter!("test_requests_total", "operation" => "get", "scheme" => "s3")
-                .increment(2);
-            metrics::counter!("test_requests_total", "operation" => "get", "scheme" => "s3")
-                .increment(3);
-            // A distinct label set must produce a separate point, not merge.
-            metrics::counter!("test_requests_total", "operation" => "put", "scheme" => "gs")
-                .increment(7);
-        });
-
-        let scalar = |attrs: &[(&str, &str)]| {
-            let points = collect_points(&registry);
-            let point = points
-                .into_iter()
-                .find(|p| {
-                    p.name == "test_requests_total"
-                        && attrs
-                            .iter()
-                            .all(|(k, v)| p.attributes.get(*k).map(String::as_str) == Some(*v))
-                })
-                .expect("counter recorded for label set");
-            assert_eq!(point.kind, MetricKind::Counter);
-            match point.value {
-                MetricValue::Scalar(v) => v,
-                _ => panic!("expected scalar"),
-            }
-        };
-
-        // Same labels aggregate; distinct labels stay separate.
-        assert!((scalar(&[("operation", "get"), ("scheme", "s3")]) - 5.0).abs() < 1e-9);
-        assert!((scalar(&[("operation", "put"), ("scheme", "gs")]) - 7.0).abs() < 1e-9);
-    }
-
-    #[test]
-    fn recorder_records_gauges() {
-        let registry = Arc::new(Registry::new(LanceStorage));
-        let recorder = LanceRecorder {
-            registry: registry.clone(),
-        };
-        // Gauges store the f64 bit pattern in a u64; the snapshot must decode it.
-        metrics::with_local_recorder(&recorder, || {
-            metrics::gauge!("test_gauge", "scheme" => "s3").set(3.5);
-        });
-
-        let points = collect_points(&registry);
-        let point = points
-            .iter()
-            .find(|p| p.name == "test_gauge")
-            .expect("gauge recorded");
-        assert_eq!(point.kind, MetricKind::Gauge);
-        assert!(matches!(point.value, MetricValue::Scalar(v) if (v - 3.5).abs() < 1e-9));
-    }
-
-    #[test]
-    fn recorder_falls_back_to_default_bounds() {
-        // A histogram with no registered bounds uses DEFAULT_BOUNDS.
-        let name = "test_unregistered_histogram";
-        assert!(!HISTOGRAM_BOUNDS.read().unwrap().contains_key(name));
-
-        let registry = Arc::new(Registry::new(LanceStorage));
-        let recorder = LanceRecorder {
-            registry: registry.clone(),
-        };
-        metrics::with_local_recorder(&recorder, || {
-            metrics::histogram!(name).record(0.02);
-        });
-
-        let points = collect_points(&registry);
-        let point = points.iter().find(|p| p.name == name).expect("recorded");
-        let MetricValue::Histogram { buckets, count, .. } = &point.value else {
-            panic!("expected histogram");
-        };
-        assert_eq!(*count, 1);
-        // DEFAULT_BOUNDS yields one bucket per bound plus the implicit `+Inf`.
-        assert_eq!(buckets.len(), DEFAULT_BOUNDS.len() + 1);
-        // 0.02 falls in the le=0.025 bucket (the third DEFAULT_BOUNDS entry).
-        assert_eq!(bucket_count(buckets, "0.025"), 1);
-        assert_eq!(bucket_count(buckets, "0.01"), 0);
-        assert_eq!(bucket_count(buckets, "+Inf"), 1);
-    }
-
-    #[test]
-    fn recorder_uses_registered_histogram_bounds() {
-        let name = "test_recorder_bounds_seconds";
-        HISTOGRAM_BOUNDS
-            .write()
-            .unwrap()
-            .insert(name.to_string(), Arc::from([0.1f64, 1.0].as_slice()));
-
-        let registry = Arc::new(Registry::new(LanceStorage));
-        let recorder = LanceRecorder {
-            registry: registry.clone(),
-        };
-        metrics::with_local_recorder(&recorder, || {
-            metrics::histogram!(name).record(0.05);
-            metrics::histogram!(name).record(5.0);
-        });
-
-        let points = collect_points(&registry);
-        let point = points.iter().find(|p| p.name == name).expect("recorded");
-        let MetricValue::Histogram { buckets, count, .. } = &point.value else {
-            panic!("expected histogram");
-        };
-        assert_eq!(*count, 2);
-        assert_eq!(bucket_count(buckets, "0.1"), 1);
-        assert_eq!(bucket_count(buckets, "+Inf"), 2);
-    }
-
-    #[test]
-    fn describe_populates_catalog() {
-        let name = "test_describe_catalog_total";
-        let registry = Arc::new(Registry::new(LanceStorage));
-        let recorder = LanceRecorder { registry };
-        metrics::with_local_recorder(&recorder, || {
-            metrics::describe_counter!(name, Unit::Count, "a test counter");
-        });
-
-        let catalog = CATALOG.lock().unwrap();
-        let entry = catalog.get(name).expect("described");
-        assert_eq!(entry.kind, MetricKind::Counter);
-        assert_eq!(entry.description, "a test counter");
-    }
-}
@@ -20,7 +20,6 @@ use crate::table::AddColumnsResult;
 use crate::table::AddResult;
 use crate::table::DeleteResult;
 use crate::table::DropColumnsResult;
-use crate::table::LsmWriteSpec;
 use crate::table::MergeResult;
 use crate::table::Tags;
 use crate::table::UpdateResult;
@@ -2270,7 +2269,8 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
        })
    }

-    async fn set_lsm_write_spec(&self, spec: LsmWriteSpec) -> Result<()> {
+    async fn set_lsm_write_spec(&self, spec: crate::table::LsmWriteSpec) -> Result<()> {
+        use crate::table::LsmWriteSpec;
        self.check_mutable().await?;

        // Map the spec onto the server's request DTO. `sharding` is internally
@@ -2322,69 +2322,6 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
        Ok(())
    }

-    async fn get_lsm_write_spec(&self) -> Result<Option<LsmWriteSpec>> {
-        // Read counterpart to set/unset, resolved server-side against HEAD. The
-        // server reads the spec from the `__lance_mem_wal` system index (shard
-        // column mapped from its Lance field id against the current schema) and
-        // re-encodes it into the same sophon-owned shape the set endpoint
-        // accepts — no lance/lancedb types cross the wire. `lsm_write_spec` is
-        // null when the LSM write path is not enabled for the table.
-        let request = self.post_read(&format!(
-            "/v1/table/{}/get_lsm_write_spec/",
-            self.identifier
-        ));
-        let (request_id, response) = self.send(request, true).await?;
-        let response = self.check_table_response(&request_id, response).await?;
-        let body = response.text().await.err_to_http(request_id.clone())?;
-
-        // Mirror of sophon's `Sharding` (internally tagged on `mode`) and
-        // `LsmWriteSpecBody` / `GetLsmWriteSpecResponse`.
-        #[derive(Deserialize)]
-        #[serde(tag = "mode", rename_all = "snake_case")]
-        enum Sharding {
-            Unsharded,
-            Bucket { column: String, num_buckets: u32 },
-            Identity { column: String },
-        }
-        #[derive(Deserialize)]
-        struct LsmWriteSpecBody {
-            sharding: Sharding,
-            #[serde(default)]
-            maintained_indexes: Vec<String>,
-            #[serde(default)]
-            writer_config_defaults: std::collections::HashMap<String, String>,
-        }
-        #[derive(Deserialize)]
-        struct GetLsmWriteSpecResponse {
-            lsm_write_spec: Option<LsmWriteSpecBody>,
-        }
-
-        let parsed: GetLsmWriteSpecResponse =
-            serde_json::from_str(&body).map_err(|e| Error::Http {
-                source: format!("Failed to parse get_lsm_write_spec response: {}", e).into(),
-                request_id,
-                status_code: None,
-            })?;
-
-        let Some(body) = parsed.lsm_write_spec else {
-            // The LSM write path is not enabled for this table.
-            return Ok(None);
-        };
-
-        let spec = match body.sharding {
-            Sharding::Bucket {
-                column,
-                num_buckets,
-            } => LsmWriteSpec::bucket(column, num_buckets),
-            Sharding::Identity { column } => LsmWriteSpec::identity(column),
-            Sharding::Unsharded => LsmWriteSpec::unsharded(),
-        }
-        .with_maintained_indexes(body.maintained_indexes)
-        .with_writer_config_defaults(body.writer_config_defaults);
-
-        Ok(Some(spec))
-    }
-
    async fn tags(&self) -> Result<Box<dyn Tags + '_>> {
        Ok(Box::new(RemoteTags { inner: self }))
    }
@@ -5424,74 +5361,6 @@ mod tests {
        table.unset_lsm_write_spec().await.unwrap();
    }

-    #[tokio::test]
-    async fn test_get_lsm_write_spec() {
-        let table = Table::new_with_handler("my_table", |request| {
-            assert_eq!(request.method(), "POST");
-            assert_eq!(
-                request.url().path(),
-                "/v1/table/my_table/get_lsm_write_spec/"
-            );
-
-            // The server resolves the spec and re-encodes it into the same
-            // sophon-owned shape the set endpoint accepts (`Sharding` internally
-            // tagged on `mode`, wrapped in `lsm_write_spec`).
-            let response = serde_json::json!({
-                "lsm_write_spec": {
-                    "sharding": { "mode": "bucket", "column": "id", "num_buckets": 4 },
-                    "maintained_indexes": ["id_idx"],
-                    "writer_config_defaults": { "durable_write": "false" },
-                }
-            });
-            http::Response::builder()
-                .status(200)
-                .body(response.to_string())
-                .unwrap()
-        });
-
-        let spec = table
-            .get_lsm_write_spec()
-            .await
-            .unwrap()
-            .expect("a spec should be reported");
-        match spec {
-            crate::table::LsmWriteSpec::Bucket {
-                column,
-                num_buckets,
-                maintained_indexes,
-                writer_config_defaults,
-            } => {
-                assert_eq!(column, "id");
-                assert_eq!(num_buckets, 4);
-                assert_eq!(maintained_indexes, vec!["id_idx".to_string()]);
-                assert_eq!(
-                    writer_config_defaults
-                        .get("durable_write")
-                        .map(String::as_str),
-                    Some("false")
-                );
-            }
-            other => panic!("expected a bucket spec, got {:?}", other),
-        }
-    }
-
-    #[tokio::test]
-    async fn test_get_lsm_write_spec_absent() {
-        let table = Table::new_with_handler("my_table", |request| {
-            assert_eq!(
-                request.url().path(),
-                "/v1/table/my_table/get_lsm_write_spec/"
-            );
-            // Null spec → the LSM write path is not enabled.
-            let response = serde_json::json!({ "lsm_write_spec": null });
-            http::Response::builder()
-                .status(200)
-                .body(response.to_string())
-                .unwrap()
-        });
-        assert!(table.get_lsm_write_spec().await.unwrap().is_none());
-    }
-
    #[tokio::test]
    async fn test_wait_for_index() {
        let table = _make_table_with_indices(0);
@@ -581,16 +581,6 @@ pub trait BaseTable: std::fmt::Display + std::fmt::Debug + Send + Sync {
            message: "unset_lsm_write_spec is not supported on this table type".into(),
        })
    }
-    /// Read the [`LsmWriteSpec`] currently installed on this table, returning
-    /// `None` when the MemWAL LSM write path is not enabled.
-    ///
-    /// The default implementation returns `NotSupported`. Implementations that
-    /// support the MemWAL LSM write path must override this.
-    async fn get_lsm_write_spec(&self) -> Result<Option<LsmWriteSpec>> {
-        Err(Error::NotSupported {
-            message: "get_lsm_write_spec is not supported on this table type".into(),
-        })
-    }
    /// Drain and close any cached MemWAL shard writers for this table.
    ///
    /// The default implementation is a no-op; table types that maintain
@@ -1548,29 +1538,6 @@ impl Table {
        self.inner.unset_lsm_write_spec().await
    }

-    /// Read the [`LsmWriteSpec`] currently installed on this table.
-    ///
-    /// Returns `Ok(None)` when the MemWAL LSM write path is not enabled (no
-    /// spec has been set, or it was removed with [`Table::unset_lsm_write_spec`]).
-    /// The returned spec — including its [`LsmWriteSpec::maintained_indexes`] and
-    /// [`LsmWriteSpec::writer_config_defaults`] — mirrors what was passed to
-    /// [`Table::set_lsm_write_spec`].
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// # use lancedb::table::Table;
-    /// # async fn example(table: &Table) -> Result<(), Box<dyn std::error::Error>> {
-    /// if let Some(spec) = table.get_lsm_write_spec().await? {
-    ///     println!("LSM write path enabled: {:?}", spec);
-    /// }
-    /// # Ok(())
-    /// # }
-    /// ```
-    pub async fn get_lsm_write_spec(&self) -> Result<Option<LsmWriteSpec>> {
-        self.inner.get_lsm_write_spec().await
-    }
-
    /// Drain and close any cached MemWAL shard writers held for this table.
    ///
    /// When an [`LsmWriteSpec`] is installed, `merge_insert` opens MemWAL shard
@@ -2883,10 +2850,6 @@ impl BaseTable for NativeTable {
        merge::lsm::unset_lsm_write_spec(self).await
    }

-    async fn get_lsm_write_spec(&self) -> Result<Option<LsmWriteSpec>> {
-        merge::lsm::get_lsm_write_spec(self).await
-    }
-
    async fn close_lsm_writers(&self) -> Result<()> {
        merge::lsm::close_lsm_writers(self).await
    }
@@ -4448,67 +4411,6 @@ mod tests {
        }
    }

-    #[tokio::test]
-    async fn test_get_lsm_write_spec() {
-        let tmp_dir = tempdir().unwrap();
-        let uri = tmp_dir.path().to_str().unwrap();
-
-        let schema = Arc::new(Schema::new(vec![
-            Field::new("id", DataType::Int64, false),
-            Field::new("region", DataType::Utf8, true),
-        ]));
-        let batch = RecordBatch::try_new(
-            schema.clone(),
-            vec![
-                Arc::new(arrow_array::Int64Array::from(vec![1, 2, 3])),
-                Arc::new(StringArray::from(vec!["a", "b", "c"])),
-            ],
-        )
-        .unwrap();
-        let reader: Box<dyn arrow_array::RecordBatchReader + Send> =
-            Box::new(RecordBatchIterator::new(vec![Ok(batch)], schema.clone()));
-        let conn = ConnectBuilder::new(uri)
-            .read_consistency_interval(Duration::from_secs(0))
-            .execute()
-            .await
-            .unwrap();
-        let table = conn.create_table("t", reader).execute().await.unwrap();
-
-        // No spec installed yet.
-        assert_eq!(table.get_lsm_write_spec().await.unwrap(), None);
-
-        // A real scalar index is needed to name it as a maintained index.
-        table
-            .create_index(&["id"], Index::Auto)
-            .execute()
-            .await
-            .unwrap();
-        let idx_name = table.list_indices().await.unwrap()[0].name.clone();
-
-        // Bucket spec round-trips exactly, including the routing column (recovered
-        // from its field id), maintained indexes, and writer config defaults.
-        let spec = LsmWriteSpec::bucket("id", 4)
-            .with_maintained_indexes([idx_name])
-            .with_writer_config_defaults([("durable_write", "false")]);
-        table.set_lsm_write_spec(spec.clone()).await.unwrap();
-        assert_eq!(table.get_lsm_write_spec().await.unwrap(), Some(spec));
-
-        // After unset, no spec is reported.
-        table.unset_lsm_write_spec().await.unwrap();
-        assert_eq!(table.get_lsm_write_spec().await.unwrap(), None);
-
-        // Identity sharding round-trips (column recovered from the schema).
-        let spec = LsmWriteSpec::identity("region");
-        table.set_lsm_write_spec(spec.clone()).await.unwrap();
-        assert_eq!(table.get_lsm_write_spec().await.unwrap(), Some(spec));
-        table.unset_lsm_write_spec().await.unwrap();
-
-        // Unsharded round-trips (no routing column).
-        let spec = LsmWriteSpec::unsharded();
-        table.set_lsm_write_spec(spec.clone()).await.unwrap();
-        assert_eq!(table.get_lsm_write_spec().await.unwrap(), Some(spec));
-    }
-
    #[tokio::test]
    pub async fn test_stats() {
        let tmp_dir = tempdir().unwrap();
@@ -32,7 +32,7 @@ use lance::dataset::mem_wal::{
 };
 use lance::index::DatasetIndexExt;
 use lance_core::datatypes::Schema as LanceSchema;
-use lance_index::mem_wal::{MemWalIndexDetails, ShardingField, ShardingSpec};
+use lance_index::mem_wal::{MemWalIndexDetails, ShardingSpec};
 use tokio::sync::RwLock;
 use uuid::Uuid;

@@ -148,97 +148,6 @@ pub(crate) async fn unset_lsm_write_spec(table: &NativeTable) -> Result<()> {
    Ok(())
 }

-// =============================================================================
-// get_lsm_write_spec
-// =============================================================================
-
-/// Read the [`LsmWriteSpec`] currently installed on the table, if any.
-///
-/// Reconstructs the spec from the MemWAL index's stored details — the same
-/// metadata [`set_lsm_write_spec`] writes — read directly via
-/// [`mem_wal_index_details`](DatasetMemWalExt::mem_wal_index_details) (the raw
-/// manifest record, not the `describe_indices` enrichment path, so it is
-/// unaffected by system-index filtering there). Returns `Ok(None)` when no
-/// MemWAL index is installed.
-#[allow(clippy::redundant_pub_crate)]
-pub(crate) async fn get_lsm_write_spec(table: &NativeTable) -> Result<Option<LsmWriteSpec>> {
-    let dataset = table.dataset.get().await?;
-    let Some(details) = dataset.mem_wal_index_details().await? else {
-        return Ok(None);
-    };
-    let spec = lsm_write_spec_from_details(&details, dataset.schema())?;
-    Ok(Some(spec))
-}
-
-/// Reconstruct the public [`LsmWriteSpec`] from stored MemWAL index details.
-///
-/// The sharding transform and its parameters recover the mode; the routing
-/// column is resolved from the sharding field's source id back to its schema
-/// name (only bucket / identity carry a column). `maintained_indexes` and
-/// `writer_config_defaults` are copied verbatim, so the result round-trips
-/// what `set_lsm_write_spec` installed.
-fn lsm_write_spec_from_details(
-    details: &MemWalIndexDetails,
-    schema: &LanceSchema,
-) -> Result<LsmWriteSpec> {
-    let spec = details
-        .sharding_specs
-        .first()
-        .ok_or_else(|| Error::Runtime {
-            message: "get_lsm_write_spec: MemWAL index has no sharding spec".to_string(),
-        })?;
-    let field = spec.fields.first().ok_or_else(|| Error::Runtime {
-        message: "get_lsm_write_spec: MemWAL index has an empty sharding spec".to_string(),
-    })?;
-
-    let base = match field.transform.as_deref() {
-        Some(BUCKET_TRANSFORM) => {
-            let num_buckets = field
-                .parameters
-                .get(NUM_BUCKETS_PARAM)
-                .and_then(|s| s.parse::<u32>().ok())
-                .filter(|n| *n > 0)
-                .ok_or_else(|| Error::Runtime {
-                    message: "get_lsm_write_spec: MemWAL bucket spec has a missing or invalid num_buckets parameter".to_string(),
-                })?;
-            LsmWriteSpec::bucket(sharding_column(field, schema)?, num_buckets)
-        }
-        Some(IDENTITY_TRANSFORM) => LsmWriteSpec::identity(sharding_column(field, schema)?),
-        Some(UNSHARDED_TRANSFORM) => LsmWriteSpec::unsharded(),
-        other => {
-            return Err(Error::Runtime {
-                message: format!(
-                    "get_lsm_write_spec: MemWAL index has an unsupported sharding transform {:?}",
-                    other
-                ),
-            });
-        }
-    };
-
-    Ok(base
-        .with_maintained_indexes(details.maintained_indexes.clone())
-        .with_writer_config_defaults(details.writer_config_defaults.clone()))
-}
-
-/// Resolve the single routing column name from a sharding field's source id.
-///
-/// `set_lsm_write_spec` records the shard column by its Lance field id, so the
-/// name is recovered by looking that id up in the current schema.
-fn sharding_column(field: &ShardingField, schema: &LanceSchema) -> Result<String> {
-    let source_id = *field.source_ids.first().ok_or_else(|| Error::Runtime {
-        message: "get_lsm_write_spec: sharding field has no source column".to_string(),
-    })?;
-    schema
-        .field_by_id(source_id)
-        .map(|f| f.name.clone())
-        .ok_or_else(|| Error::Runtime {
-            message: format!(
-                "get_lsm_write_spec: sharding source field id {} not found in schema",
-                source_id
-            ),
-        })
-}
-
 // =============================================================================
 // close_lsm_writers
 // =============================================================================