refactor(functions): use a GPU capability marker

refactor(functions): simplify GPU requirements
chore: update lance dependency to v12.0.0-beta.4
2026-09-12 08:12:28 +00:00 · 2026-08-30 20:06:14 +08:00 · 2026-08-29 19:12:45 +08:00 · 2026-08-29 02:19:43 +08:00 · 2026-08-29 02:13:09 +08:00
22 changed files with 109 additions and 697 deletions
@@ -1,5 +1,5 @@
 [tool.bumpversion]
-current_version = "0.38.0-beta.14"
+current_version = "0.38.0-beta.12"
 parse = """(?x)
    (?P<major>0|[1-9]\\d*)\\.
    (?P<minor>0|[1-9]\\d*)\\.
@@ -3455,8 +3455,8 @@ checksum = "42703706b716c37f96a77aea830392ad231f44c9e9a67872fa5548707e11b11c"

 [[package]]
 name = "fsst"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow-array",
 "rand 0.9.5",
@@ -4815,8 +4815,8 @@ checksum = "e037a2e1d8d5fdbd49b16a4ea09d5d6401c1f29eca5ff29d03d3824dba16256a"

 [[package]]
 name = "lance"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arc-swap",
 "arrow",
@@ -4888,8 +4888,8 @@ dependencies = [

 [[package]]
 name = "lance-arrow"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -4911,7 +4911,7 @@ dependencies = [
 [[package]]
 name = "lance-arrow-scalar"
 version = "58.0.0"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -4925,7 +4925,7 @@ dependencies = [
 [[package]]
 name = "lance-arrow-stats"
 version = "58.0.0"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow-array",
 "arrow-schema",
@@ -4934,8 +4934,8 @@ dependencies = [

 [[package]]
 name = "lance-bitpacking"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrayref",
 "crunchy",
@@ -4945,8 +4945,8 @@ dependencies = [

 [[package]]
 name = "lance-core"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -4983,8 +4983,8 @@ dependencies = [

 [[package]]
 name = "lance-datafusion"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow",
 "arrow-array",
@@ -5013,8 +5013,8 @@ dependencies = [

 [[package]]
 name = "lance-datagen"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow",
 "arrow-array",
@@ -5031,8 +5031,8 @@ dependencies = [

 [[package]]
 name = "lance-derive"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -5041,8 +5041,8 @@ dependencies = [

 [[package]]
 name = "lance-encoding"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow-arith",
 "arrow-array",
@@ -5075,8 +5075,8 @@ dependencies = [

 [[package]]
 name = "lance-file"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow-arith",
 "arrow-array",
@@ -5107,8 +5107,8 @@ dependencies = [

 [[package]]
 name = "lance-index"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arc-swap",
 "arrow",
@@ -5172,8 +5172,8 @@ dependencies = [

 [[package]]
 name = "lance-index-core"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow-array",
 "arrow-schema",
@@ -5195,8 +5195,8 @@ dependencies = [

 [[package]]
 name = "lance-io"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow",
 "arrow-array",
@@ -5236,8 +5236,8 @@ dependencies = [

 [[package]]
 name = "lance-linalg"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow-array",
 "arrow-schema",
@@ -5251,8 +5251,8 @@ dependencies = [

 [[package]]
 name = "lance-namespace"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow",
 "async-trait",
@@ -5264,8 +5264,8 @@ dependencies = [

 [[package]]
 name = "lance-namespace-impls"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow",
 "arrow-ipc",
@@ -5318,8 +5318,8 @@ dependencies = [

 [[package]]
 name = "lance-select"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -5333,8 +5333,8 @@ dependencies = [

 [[package]]
 name = "lance-table"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow",
 "arrow-array",
@@ -5374,8 +5374,8 @@ dependencies = [

 [[package]]
 name = "lance-testing"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "arrow-array",
 "arrow-schema",
@@ -5388,8 +5388,8 @@ dependencies = [

 [[package]]
 name = "lance-tokenizer"
-version = "12.0.0-beta.5"
-source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.5#556637791d0048c2b4f1342dd84b67c8bbd65259"
+version = "12.0.0-beta.4"
+source = "git+https://github.com/lance-format/lance.git?tag=v12.0.0-beta.4#474ae88dd75c437d5d506859b627510978e502e9"
 dependencies = [
 "frostem",
 "icu_segmenter",
@@ -5402,7 +5402,7 @@ dependencies = [

 [[package]]
 name = "lancedb"
-version = "0.38.0-beta.13"
+version = "0.38.0-beta.12"
 dependencies = [
 "ahash",
 "anyhow",
@@ -5490,7 +5490,7 @@ dependencies = [

 [[package]]
 name = "lancedb-nodejs"
-version = "0.38.0-beta.13"
+version = "0.38.0-beta.12"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -5515,7 +5515,7 @@ dependencies = [

 [[package]]
 name = "lancedb-python"
-version = "0.38.0-beta.13"
+version = "0.38.0-beta.12"
 dependencies = [
 "arrow",
 "async-trait",
@@ -13,20 +13,20 @@ categories = ["database-implementations"]
 rust-version = "1.91.0"

 [workspace.dependencies]
-lance = { "version" = "=12.0.0-beta.5", default-features = false, "tag" = "v12.0.0-beta.5", "git" = "https://github.com/lance-format/lance.git" }
-lance-core = { "version" = "=12.0.0-beta.5", "tag" = "v12.0.0-beta.5", "git" = "https://github.com/lance-format/lance.git" }
-lance-datagen = { "version" = "=12.0.0-beta.5", "tag" = "v12.0.0-beta.5", "git" = "https://github.com/lance-format/lance.git" }
-lance-file = { "version" = "=12.0.0-beta.5", "tag" = "v12.0.0-beta.5", "git" = "https://github.com/lance-format/lance.git" }
-lance-io = { "version" = "=12.0.0-beta.5", default-features = false, "tag" = "v12.0.0-beta.5", "git" = "https://github.com/lance-format/lance.git" }
-lance-index = { "version" = "=12.0.0-beta.5", "tag" = "v12.0.0-beta.5", "git" = "https://github.com/lance-format/lance.git" }
-lance-linalg = { "version" = "=12.0.0-beta.5", "tag" = "v12.0.0-beta.5", "git" = "https://github.com/lance-format/lance.git" }
-lance-namespace = { "version" = "=12.0.0-beta.5", "tag" = "v12.0.0-beta.5", "git" = "https://github.com/lance-format/lance.git" }
-lance-namespace-impls = { "version" = "=12.0.0-beta.5", default-features = false, "tag" = "v12.0.0-beta.5", "git" = "https://github.com/lance-format/lance.git" }
-lance-table = { "version" = "=12.0.0-beta.5", "tag" = "v12.0.0-beta.5", "git" = "https://github.com/lance-format/lance.git" }
-lance-testing = { "version" = "=12.0.0-beta.5", "tag" = "v12.0.0-beta.5", "git" = "https://github.com/lance-format/lance.git" }
-lance-datafusion = { "version" = "=12.0.0-beta.5", "tag" = "v12.0.0-beta.5", "git" = "https://github.com/lance-format/lance.git" }
-lance-encoding = { "version" = "=12.0.0-beta.5", "tag" = "v12.0.0-beta.5", "git" = "https://github.com/lance-format/lance.git" }
-lance-arrow = { "version" = "=12.0.0-beta.5", "tag" = "v12.0.0-beta.5", "git" = "https://github.com/lance-format/lance.git" }
+lance = { "version" = "=12.0.0-beta.4", default-features = false, "tag" = "v12.0.0-beta.4", "git" = "https://github.com/lance-format/lance.git" }
+lance-core = { "version" = "=12.0.0-beta.4", "tag" = "v12.0.0-beta.4", "git" = "https://github.com/lance-format/lance.git" }
+lance-datagen = { "version" = "=12.0.0-beta.4", "tag" = "v12.0.0-beta.4", "git" = "https://github.com/lance-format/lance.git" }
+lance-file = { "version" = "=12.0.0-beta.4", "tag" = "v12.0.0-beta.4", "git" = "https://github.com/lance-format/lance.git" }
+lance-io = { "version" = "=12.0.0-beta.4", default-features = false, "tag" = "v12.0.0-beta.4", "git" = "https://github.com/lance-format/lance.git" }
+lance-index = { "version" = "=12.0.0-beta.4", "tag" = "v12.0.0-beta.4", "git" = "https://github.com/lance-format/lance.git" }
+lance-linalg = { "version" = "=12.0.0-beta.4", "tag" = "v12.0.0-beta.4", "git" = "https://github.com/lance-format/lance.git" }
+lance-namespace = { "version" = "=12.0.0-beta.4", "tag" = "v12.0.0-beta.4", "git" = "https://github.com/lance-format/lance.git" }
+lance-namespace-impls = { "version" = "=12.0.0-beta.4", default-features = false, "tag" = "v12.0.0-beta.4", "git" = "https://github.com/lance-format/lance.git" }
+lance-table = { "version" = "=12.0.0-beta.4", "tag" = "v12.0.0-beta.4", "git" = "https://github.com/lance-format/lance.git" }
+lance-testing = { "version" = "=12.0.0-beta.4", "tag" = "v12.0.0-beta.4", "git" = "https://github.com/lance-format/lance.git" }
+lance-datafusion = { "version" = "=12.0.0-beta.4", "tag" = "v12.0.0-beta.4", "git" = "https://github.com/lance-format/lance.git" }
+lance-encoding = { "version" = "=12.0.0-beta.4", "tag" = "v12.0.0-beta.4", "git" = "https://github.com/lance-format/lance.git" }
+lance-arrow = { "version" = "=12.0.0-beta.4", "tag" = "v12.0.0-beta.4", "git" = "https://github.com/lance-format/lance.git" }
 lancedb = { path = "rust/lancedb", default-features = false }
 ahash = "0.8"
 # Note that this one does not include pyarrow
@@ -14,7 +14,7 @@ Add the following dependency to your `pom.xml`:
 <dependency>
    <groupId>com.lancedb</groupId>
    <artifactId>lancedb-core</artifactId>
-    <version>0.38.0-beta.14</version>
+    <version>0.38.0-beta.12</version>
 </dependency>
 ```

@@ -8,7 +8,7 @@
    <parent>
      <groupId>com.lancedb</groupId>
      <artifactId>lancedb-parent</artifactId>
-      <version>0.38.0-beta.14</version>
+      <version>0.38.0-beta.12</version>
      <relativePath>../pom.xml</relativePath>
    </parent>

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

    <groupId>com.lancedb</groupId>
    <artifactId>lancedb-parent</artifactId>
-    <version>0.38.0-beta.14</version>
+    <version>0.38.0-beta.12</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>12.0.0-beta.5</lance-core.version>
+        <lance-core.version>12.0.0-beta.4</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 = "0.38.0-beta.14"
+version = "0.38.0-beta.12"
 publish = false
 license.workspace = true
 description.workspace = true
@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-darwin-arm64",
-	"version": "0.38.0-beta.14",
+	"version": "0.38.0-beta.12",
 	"os": ["darwin"],
 	"cpu": ["arm64"],
 	"main": "lancedb.darwin-arm64.node",
@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-arm64-gnu",
-	"version": "0.38.0-beta.14",
+	"version": "0.38.0-beta.12",
 	"os": ["linux"],
 	"cpu": ["arm64"],
 	"main": "lancedb.linux-arm64-gnu.node",
@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-arm64-musl",
-	"version": "0.38.0-beta.14",
+	"version": "0.38.0-beta.12",
 	"os": ["linux"],
 	"cpu": ["arm64"],
 	"main": "lancedb.linux-arm64-musl.node",
@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-x64-gnu",
-	"version": "0.38.0-beta.14",
+	"version": "0.38.0-beta.12",
 	"os": ["linux"],
 	"cpu": ["x64"],
 	"main": "lancedb.linux-x64-gnu.node",
@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-x64-musl",
-	"version": "0.38.0-beta.14",
+	"version": "0.38.0-beta.12",
 	"os": ["linux"],
 	"cpu": ["x64"],
 	"main": "lancedb.linux-x64-musl.node",
@@ -1,6 +1,6 @@
 {
  "name": "@lancedb/lancedb-win32-arm64-msvc",
-  "version": "0.38.0-beta.14",
+  "version": "0.38.0-beta.12",
  "os": [
    "win32"
  ],
@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-win32-x64-msvc",
-	"version": "0.38.0-beta.14",
+	"version": "0.38.0-beta.12",
 	"os": ["win32"],
 	"cpu": ["x64"],
 	"main": "lancedb.win32-x64-msvc.node",
@@ -11,7 +11,7 @@
    "ann"
  ],
  "private": false,
-  "version": "0.38.0-beta.14",
+  "version": "0.38.0-beta.12",
  "main": "dist/index.js",
  "exports": {
    ".": "./dist/index.js",
@@ -1,6 +1,6 @@
 [package]
 name = "lancedb-python"
-version = "0.38.0-beta.14"
+version = "0.38.0-beta.12"
 publish = false
 edition.workspace = true
 description = "Python bindings for LanceDB"
@@ -541,107 +541,31 @@ _GRAMMAR_PRIMITIVES = (


 def _canonical_arrow_type(data_type: pa.DataType) -> str:
-    """The compact Function grammar, or canonical exact JSON for nested types."""
-    grammar = _grammar_arrow_type(data_type)
-    if grammar is not None:
-        return grammar
-    exact = _exact_arrow_type(data_type)
-    return json.dumps(exact, ensure_ascii=False, sort_keys=True, separators=(",", ":"))
-
-
-def _grammar_arrow_type(data_type: pa.DataType) -> Optional[str]:
+    """The server's V1 Function type grammar. Anything outside it is rejected
+    here rather than at registration."""
    for candidate, name in _GRAMMAR_PRIMITIVES:
        if data_type == candidate:
            return name
    if pa.types.is_list(data_type) or pa.types.is_large_list(data_type):
-        item = _grammar_list_item(data_type)
-        if item is None:
-            return None
        prefix = "list" if pa.types.is_list(data_type) else "large_list"
-        return f"{prefix}<{item}>"
+        return f"{prefix}<{_canonical_list_item(data_type)}>"
    if pa.types.is_fixed_size_list(data_type) and data_type.list_size > 0:
-        item = _grammar_list_item(data_type)
-        if item is not None:
-            return f"fixed_size_list<{item}, {data_type.list_size}>"
-    return None
+        return (
+            f"fixed_size_list<{_canonical_list_item(data_type)}, {data_type.list_size}>"
+        )
+    raise TypeError(f"unsupported Arrow type for Function signature: {data_type}")


-def _grammar_list_item(data_type: pa.DataType) -> Optional[str]:
+def _canonical_list_item(data_type: pa.DataType) -> str:
    """The grammar names only the item type; it always means a non-nullable
-    child called `item`, so other child properties require exact JSON."""
+    child called `item`, so any other child metadata cannot be represented."""
    child = data_type.value_field
    if child.name != "item" or child.nullable or child.metadata:
-        return None
-    return _grammar_arrow_type(child.type)
-
-
-def _validate_exact_arrow_field(field: pa.Field) -> None:
-    if not field.name:
        raise TypeError(
-            "unsupported Arrow type for Function signature: field names "
-            "must not be empty"
+            "unsupported Arrow type for Function signature: list items must be a "
+            f"non-nullable field named 'item', got {child}"
        )
-    if field.metadata:
-        raise TypeError(
-            "unsupported Arrow type for Function signature: field metadata "
-            f"is not supported, got {field}"
-        )
-
-
-def _exact_arrow_field(field: pa.Field) -> dict[str, Any]:
-    _validate_exact_arrow_field(field)
-    return {
-        "name": field.name,
-        "nullable": field.nullable,
-        "type": _exact_arrow_type(field.type),
-    }
-
-
-def _exact_arrow_type(data_type: pa.DataType) -> dict[str, Any]:
-    for candidate, name in _GRAMMAR_PRIMITIVES:
-        if data_type == candidate:
-            return {"type": name}
-    if pa.types.is_struct(data_type):
-        fields = list(data_type)
-        names = [field.name for field in fields]
-        if not fields or len(set(names)) != len(names):
-            raise TypeError(
-                "unsupported Arrow type for Function signature: structs must have "
-                "non-empty, uniquely named fields"
-            )
-        return {
-            "type": "struct",
-            "fields": [_exact_arrow_field(field) for field in fields],
-        }
-    if (
-        pa.types.is_list(data_type)
-        or pa.types.is_large_list(data_type)
-        or pa.types.is_fixed_size_list(data_type)
-    ):
-        if pa.types.is_fixed_size_list(data_type):
-            if data_type.value_field.name != "item":
-                raise TypeError(
-                    "unsupported Arrow type for Function signature: fixed-size list "
-                    "items must be named 'item'"
-                )
-            if data_type.list_size <= 0:
-                raise TypeError(
-                    f"unsupported Arrow type for Function signature: {data_type}"
-                )
-        value: dict[str, Any] = {
-            "type": (
-                "list"
-                if pa.types.is_list(data_type)
-                else "large_list"
-                if pa.types.is_large_list(data_type)
-                else "fixed_size_list"
-            ),
-            "fields": [_exact_arrow_field(data_type.value_field)],
-        }
-        if pa.types.is_fixed_size_list(data_type):
-            value["length"] = data_type.list_size
-        return value
-    raise TypeError(f"unsupported Arrow type for Function signature: {data_type}")
+    return _canonical_arrow_type(child.type)


 def _list_of(item: pa.DataType) -> pa.DataType:
@@ -715,11 +639,8 @@ def _callable_parameters(function: Callable[..., Any]) -> tuple[inspect.Paramete

 def _function_output(output: pa.DataType | pa.Field | pa.Schema) -> FunctionOutput:
    if isinstance(output, pa.Schema):
-        if output.metadata:
-            raise TypeError("Function output schema metadata is not supported")
        fields = tuple(output)
    elif isinstance(output, pa.Field) and pa.types.is_struct(output.type):
-        _validate_exact_arrow_field(output)
        if output.nullable:
            raise ValueError("Function output must be non-nullable")
        fields = tuple(output.type)
@@ -735,7 +656,6 @@ def _function_output(output: pa.DataType | pa.Field | pa.Schema) -> FunctionOutp
            raise TypeError(
                "output_schema must be a PyArrow DataType, Field, or Schema"
            )
-        _validate_exact_arrow_field(field)
        if field.nullable:
            raise ValueError("Function output must be non-nullable")
        return FunctionOutput(
@@ -748,8 +668,6 @@ def _function_output(output: pa.DataType | pa.Field | pa.Schema) -> FunctionOutp
        raise ValueError("named-struct Function output must contain at least one field")
    if any(field.nullable for field in fields):
        raise ValueError("Function output fields must be non-nullable")
-    for field in fields:
-        _validate_exact_arrow_field(field)
    names = [field.name for field in fields]
    if len(set(names)) != len(names):
        raise ValueError("Function output field names must be unique")
@@ -778,10 +696,6 @@ def _infer_signature(
    if input_schema is not None:
        if not isinstance(input_schema, pa.Schema):
            raise TypeError("input_schema must be a PyArrow Schema")
-        if input_schema.metadata:
-            raise TypeError("Function input schema metadata is not supported")
-        for field in input_schema:
-            _validate_exact_arrow_field(field)
        expected = tuple(parameter.name for parameter in parameters)
        actual = tuple(input_schema.names)
        if actual != expected:
@@ -220,7 +220,7 @@ def test_udf_resolves_module_globals_before_builtins(tmp_path):
        udf(module.uses_callable_shadow)


-def test_canonical_arrow_type_prefers_the_compact_grammar():
+def test_canonical_arrow_type_is_exactly_the_grammar():
    from lancedb.functions import _GRAMMAR_PRIMITIVES, _canonical_arrow_type

    golden = json.loads(
@@ -233,13 +233,6 @@ def test_canonical_arrow_type_prefers_the_compact_grammar():
        case["arrow_type"] for case in golden["valid"] if "<" not in case["arrow_type"]
    ]
    assert [name for _, name in _GRAMMAR_PRIMITIVES] == primitives
-    assert _canonical_arrow_type(pa.list_(pa.field("item", pa.float32(), False))) == (
-        "list<float32>"
-    )
-    assert (
-        _canonical_arrow_type(pa.large_list(pa.field("item", pa.float32(), False)))
-        == "large_list<float32>"
-    )
    for outside in [
        pa.timestamp("us"),
        pa.decimal128(10, 2),
@@ -247,6 +240,7 @@ def test_canonical_arrow_type_prefers_the_compact_grammar():
        pa.large_binary(),
        pa.binary(4),
        pa.duration("s"),
+        pa.struct([pa.field("a", pa.int32())]),
        pa.list_(pa.float32(), 0),
        pa.list_(pa.timestamp("us")),
    ]:
@@ -436,29 +430,14 @@ def test_udf_recursion_versus_a_rebound_module_name(tmp_path):
        udf(raw_fact)


-def test_canonical_arrow_type_uses_exact_json_for_list_child_properties():
+def test_canonical_arrow_type_rejects_unrepresentable_list_children():
    from lancedb.functions import _canonical_arrow_type

-    nullable = pa.list_(pa.float32())
-    assert json.loads(_canonical_arrow_type(nullable)) == {
-        "type": "list",
-        "fields": [
-            {
-                "name": "item",
-                "nullable": True,
-                "type": {"type": "float32"},
-            }
-        ],
-    }
-    named = pa.list_(pa.field("custom", pa.float32(), nullable=False))
-    assert json.loads(_canonical_arrow_type(named))["fields"][0]["name"] == "custom"
    for outside in [
+        pa.list_(pa.float32()),  # pyarrow default: nullable child
+        pa.list_(pa.field("custom", pa.float32(), nullable=False)),
        pa.list_(pa.field("item", pa.float32(), nullable=False, metadata={"k": "v"})),
        pa.list_(pa.field("item", pa.float32(), nullable=False), 0),
-        pa.list_(
-            pa.field("item", pa.float32(), nullable=False, metadata={"k": "v"}), 3
-        ),
-        pa.list_(pa.field("custom", pa.float32(), nullable=False), 3),
    ]:
        with pytest.raises(TypeError, match="unsupported Arrow type"):
            _canonical_arrow_type(outside)
@@ -468,29 +447,6 @@ def test_canonical_arrow_type_uses_exact_json_for_list_child_properties():
        )
        == "fixed_size_list<float32, 3>"
    )
-    fixed = json.loads(_canonical_arrow_type(pa.list_(pa.float32(), 3)))
-    assert fixed == {
-        "type": "fixed_size_list",
-        "fields": [
-            {
-                "name": "item",
-                "nullable": True,
-                "type": {"type": "float32"},
-            }
-        ],
-        "length": 3,
-    }
-    large = json.loads(_canonical_arrow_type(pa.large_list(pa.float32())))
-    assert large["type"] == "large_list"
-    assert large["fields"][0]["nullable"] is True
-
-    for invalid_struct in [
-        pa.struct([]),
-        pa.struct([pa.field("a", pa.int32()), pa.field("a", pa.int64())]),
-        pa.struct([pa.field("", pa.int32())]),
-    ]:
-        with pytest.raises(TypeError, match="unsupported Arrow type"):
-            _canonical_arrow_type(invalid_struct)


 def _calls_missing(value: int) -> int:
@@ -578,105 +534,6 @@ def test_explicit_arrow_schema_is_deterministic():
    assert signature.output.nullable is False


-def test_nested_struct_output_uses_canonical_exact_json():
-    token = pa.struct(
-        [
-            pa.field("position", pa.int32(), nullable=False),
-            pa.field("value", pa.string(), nullable=False),
-            pa.field("length", pa.int32(), nullable=False),
-        ]
-    )
-    analysis = pa.struct(
-        [
-            pa.field("normalized_text", pa.string(), nullable=False),
-            pa.field("has_content", pa.bool_(), nullable=False),
-            pa.field(
-                "metrics",
-                pa.struct(
-                    [
-                        pa.field("character_count", pa.int64(), nullable=False),
-                        pa.field("word_count", pa.int32(), nullable=False),
-                        pa.field("average_word_length", pa.float64(), nullable=False),
-                    ]
-                ),
-                nullable=False,
-            ),
-            pa.field(
-                "diagnostics",
-                pa.struct(
-                    [
-                        pa.field("status", pa.string(), nullable=False),
-                        pa.field(
-                            "normalization",
-                            pa.struct(
-                                [
-                                    pa.field("changed", pa.bool_(), nullable=False),
-                                    pa.field(
-                                        "original_length", pa.int64(), nullable=False
-                                    ),
-                                ]
-                            ),
-                            nullable=False,
-                        ),
-                    ]
-                ),
-                nullable=False,
-            ),
-            pa.field(
-                "token_preview",
-                pa.list_(pa.field("item", token, nullable=False)),
-                nullable=False,
-            ),
-        ]
-    )
-
-    @udf(
-        input_schema=pa.schema([pa.field("text", pa.string(), nullable=False)]),
-        output_schema=pa.field("analysis", analysis, nullable=False),
-    )
-    def analyze(text):
-        return {"normalized_text": text}
-
-    output = analyze.registration_request.signature.output
-    assert output.kind == "named_struct"
-    assert [field.name for field in output.fields] == [
-        "normalized_text",
-        "has_content",
-        "metrics",
-        "diagnostics",
-        "token_preview",
-    ]
-    metrics = json.loads(output.fields[2].arrow_type)
-    assert metrics == {
-        "type": "struct",
-        "fields": [
-            {
-                "name": "character_count",
-                "nullable": False,
-                "type": {"type": "int64"},
-            },
-            {
-                "name": "word_count",
-                "nullable": False,
-                "type": {"type": "int32"},
-            },
-            {
-                "name": "average_word_length",
-                "nullable": False,
-                "type": {"type": "float64"},
-            },
-        ],
-    }
-    preview = json.loads(output.fields[4].arrow_type)
-    assert preview["type"] == "list"
-    assert preview["fields"][0]["type"]["type"] == "struct"
-    assert [field["name"] for field in preview["fields"][0]["type"]["fields"]] == [
-        "position",
-        "value",
-        "length",
-    ]
-
-
 def test_annotation_and_explicit_schema_validation_fail_closed():
    with pytest.raises(TypeError, match="missing Function annotations"):

@@ -720,72 +577,6 @@ def test_annotation_and_explicit_schema_validation_fail_closed():
        def nullable_explicit(value):
            return value

-    for invalid_field in [
-        pa.field("", pa.int32(), nullable=False),
-        pa.field("result", pa.int32(), nullable=False, metadata={"k": "v"}),
-    ]:
-        with pytest.raises(TypeError, match="unsupported Arrow type"):
-
-            @udf(
-                input_schema=pa.schema([pa.field("value", pa.int64())]),
-                output_schema=pa.schema([invalid_field]),
-            )
-            def invalid_explicit_field(value):
-                return value
-
-    with pytest.raises(TypeError, match="unsupported Arrow type"):
-
-        @udf(
-            input_schema=pa.schema(
-                [pa.field("value", pa.int64(), metadata={"k": "v"})]
-            ),
-            output_schema=pa.int64(),
-        )
-        def input_field_metadata(value):
-            return value
-
-    with pytest.raises(TypeError, match="unsupported Arrow type"):
-
-        @udf(
-            input_schema=pa.schema([pa.field("value", pa.int64())]),
-            output_schema=pa.field(
-                "result", pa.int64(), nullable=False, metadata={"k": "v"}
-            ),
-        )
-        def scalar_output_field_metadata(value):
-            return value
-
-    struct_type = pa.struct([pa.field("value", pa.int64(), nullable=False)])
-    with pytest.raises(TypeError, match="unsupported Arrow type"):
-
-        @udf(
-            input_schema=pa.schema([pa.field("value", pa.int64())]),
-            output_schema=pa.field(
-                "result", struct_type, nullable=False, metadata={"k": "v"}
-            ),
-        )
-        def struct_output_field_metadata(value):
-            return {"value": value}
-
-    for input_schema, output_schema in [
-        (
-            pa.schema([pa.field("value", pa.int64())], metadata={"k": "v"}),
-            pa.int64(),
-        ),
-        (
-            pa.schema([pa.field("value", pa.int64())]),
-            pa.schema(
-                [pa.field("result", pa.int64(), nullable=False)],
-                metadata={"k": "v"},
-            ),
-        ),
-    ]:
-        with pytest.raises(TypeError, match="schema metadata"):
-
-            @udf(input_schema=input_schema, output_schema=output_schema)
-            def schema_metadata(value):
-                return value
-

 def test_local_function_catalog_operations_are_not_supported(tmp_path):
    db = lancedb.connect(tmp_path)
@@ -1,6 +1,6 @@
 [package]
 name = "lancedb"
-version = "0.38.0-beta.14"
+version = "0.38.0-beta.12"
 edition.workspace = true
 description = "LanceDB: A serverless, low-latency vector database for AI applications"
 license.workspace = true
@@ -7464,93 +7464,6 @@ mod tests {
        assert_eq!(result.version, 8);
    }

-    #[tokio::test]
-    async fn test_add_function_column_allows_an_existing_binding() {
-        let binding = crate::function::FunctionBinding::from_json(include_str!(
-            "../../tests/fixtures/first_class_functions/v1/remote_function_binding.json"
-        ))
-        .unwrap();
-        let binding_metadata = crate::table::computed_columns::function_bindings_metadata(
-            std::slice::from_ref(&binding),
-        )
-        .unwrap();
-        let mut fields = vec![
-            Field::new("title", DataType::Utf8, true),
-            Field::new("body", DataType::Utf8, true),
-        ];
-        fields.extend(binding.outputs().iter().map(|output| {
-            let data_type = match output.arrow_type.as_str() {
-                "utf8" => DataType::Utf8,
-                "int64" => DataType::Int64,
-                other => panic!("unexpected fixture output type {other}"),
-            };
-            Field::new(&output.output_name, data_type, true).with_metadata(
-                crate::table::computed_columns::function_computed_column_metadata(
-                    binding.binding_id(),
-                    output.output_ordinal,
-                    &["title".into(), "body".into()],
-                ),
-            )
-        }));
-        let schema = Schema::new_with_metadata(
-            fields,
-            HashMap::from([(
-                crate::table::computed_columns::FUNCTION_BINDINGS_META_KEY.to_string(),
-                binding_metadata,
-            )]),
-        );
-        let table =
-            Table::new_with_handler("my_table", move |request| match request.url().path() {
-                "/v1/table/my_table/describe/" => http::Response::builder()
-                    .status(200)
-                    .body(describe_response(&schema))
-                    .unwrap(),
-                "/v1/table/my_table/add_columns/" => {
-                    let actual: serde_json::Value =
-                        serde_json::from_slice(request.body().unwrap().as_bytes().unwrap())
-                            .unwrap();
-                    assert_eq!(
-                        actual["new_columns"],
-                        serde_json::json!([
-                            {"name":"secondary_text","all_null":true},
-                            {"name":"secondary_token_count","all_null":true}
-                        ])
-                    );
-                    http::Response::builder()
-                        .status(200)
-                        .body(r#"{"version":10}"#.to_string())
-                        .unwrap()
-                }
-                path => panic!("Unexpected path: {path}"),
-            });
-        let application = crate::function::FunctionApplication::from_json(
-            r#"{
-                "function":{"name":"text_features","version":"fv_01K3TEXT"},
-                "inputs":[
-                    {"parameter":"title","kind":"column","value":{"path":"title"}},
-                    {"parameter":"body","kind":"column","value":{"path":"body"}}
-                ],
-                "output":{"kind":"named_struct","fields":[
-                    {"name":"normalized_text","arrow_type":"utf8","nullable":false},
-                    {"name":"token_count","arrow_type":"int64","nullable":false}
-                ]},
-                "columns":{
-                    "normalized_text":"secondary_text",
-                    "token_count":"secondary_token_count"
-                }
-            }"#,
-        )
-        .unwrap();
-
-        let result = table
-            .add_columns()
-            .function(application)
-            .execute()
-            .await
-            .unwrap();
-        assert_eq!(result.version, 10);
-    }
-
    #[tokio::test]
    async fn test_add_fixed_size_list_function_column_declares_the_vector_type() {
        let table = Table::new_with_handler("my_table", |request| {
@@ -5763,13 +5763,6 @@ mod tests {
        assert!(index_bytes > 0);
        assert_eq!(with_index, data_only + index_bytes);

-        // Release builds reject unstable overlay datasets unless explicitly opted in.
-        if !lance_table::feature_flags::can_read_dataset(
-            lance_table::feature_flags::FLAG_UNSTABLE_DATA_OVERLAY_FILES,
-        ) {
-            return;
-        }
-
        // Commit an overlay file supplying new `foo` values for the first three
        // rows of fragment 0. There is no high-level API that writes overlays
        // yet, so write the overlay's data file and commit the `DataOverlay`
@@ -547,12 +547,7 @@ fn ensure_known_binding_shape(value: &Value) -> Result<()> {
    Ok(())
 }

-struct ResolvedFieldPath<'a> {
-    root: &'a ArrowField,
-    leaf: &'a ArrowField,
-}
-
-fn resolve_field_path<'a>(schema: &'a ArrowSchema, path: &str) -> Result<ResolvedFieldPath<'a>> {
+fn resolve_field_path<'a>(schema: &'a ArrowSchema, path: &str) -> Result<&'a ArrowField> {
    let parts = lance_core::datatypes::parse_field_path(path).map_err(|e| {
        invalid_function(format!("invalid Function input field path '{path}': {e}"))
    })?;
@@ -561,23 +556,22 @@ fn resolve_field_path<'a>(schema: &'a ArrowSchema, path: &str) -> Result<Resolve
            "Function input field path cannot be empty",
        ));
    };
-    let root = schema
+    let mut field = schema
        .field_with_name(root)
        .map_err(|_| invalid_function(format!("unknown Function input column '{path}'")))?;
-    let mut leaf = root;
    for child in children {
-        let DataType::Struct(fields) = leaf.data_type() else {
+        let DataType::Struct(fields) = field.data_type() else {
            return Err(invalid_function(format!(
                "Function input field path '{path}' traverses a non-struct field"
            )));
        };
-        leaf = fields
+        field = fields
            .iter()
            .find(|field| field.name() == child)
            .map(AsRef::as_ref)
            .ok_or_else(|| invalid_function(format!("unknown Function input column '{path}'")))?;
    }
-    Ok(ResolvedFieldPath { root, leaf })
+    Ok(field)
 }

 fn canonical_input_arrow_type(field: &JsonArrowField) -> Result<String> {
@@ -672,8 +666,7 @@ fn parse_output_arrow_type(raw: &str) -> Result<JsonArrowDataType> {
 fn ensure_binding_matches_schema(schema: &ArrowSchema, binding: &FunctionBinding) -> Result<()> {
    let mut input_fields = Vec::with_capacity(binding.inputs().len());
    for input in binding.inputs() {
-        let resolved = resolve_field_path(schema, &input.field_path)?;
-        let field = resolved.leaf;
+        let field = resolve_field_path(schema, &input.field_path)?;
        if field
            .metadata()
            .get(COMPUTED_COLUMN_META_KEY)
@@ -728,11 +721,6 @@ fn ensure_binding_matches_schema(schema: &ArrowSchema, binding: &FunctionBinding
        )));
    }

-    let expected_inputs = binding
-        .inputs()
-        .iter()
-        .map(|input| input.field_path.clone())
-        .collect::<Vec<_>>();
    let mut output_fields = Vec::with_capacity(binding.outputs().len());
    for output in binding.outputs() {
        let field = schema.field_with_name(&output.output_name).map_err(|_| {
@@ -759,28 +747,6 @@ fn ensure_binding_matches_schema(schema: &ArrowSchema, binding: &FunctionBinding
                binding.binding_id()
            )));
        }
-        let metadata = field.metadata();
-        let declared_inputs = metadata
-            .get(INPUTS_META_KEY)
-            .and_then(|raw| serde_json::from_str::<Vec<String>>(raw).ok());
-        if metadata.get(COMPUTED_COLUMN_META_KEY).map(String::as_str) != Some("true")
-            || metadata.get(KIND_META_KEY).map(String::as_str) != Some(FUNCTION_KIND)
-            || metadata
-                .get(FUNCTION_BINDING_ID_META_KEY)
-                .map(String::as_str)
-                != Some(binding.binding_id())
-            || metadata
-                .get(FUNCTION_OUTPUT_ORDINAL_META_KEY)
-                .and_then(|value| value.parse::<u32>().ok())
-                != Some(output.output_ordinal)
-            || declared_inputs.as_deref() != Some(expected_inputs.as_slice())
-        {
-            return Err(invalid_function(format!(
-                "Function output '{}' declaration metadata does not match binding '{}'",
-                output.output_name,
-                binding.binding_id()
-            )));
-        }
        output_fields.push(ArrowField::new(
            field.name().clone(),
            field.data_type().clone(),
@@ -812,7 +778,7 @@ pub(crate) fn plan_function_application(
    application: &FunctionApplication,
    output_name: Option<&str>,
 ) -> Result<FunctionDeclarationPlan> {
-    ensure_supported_function_metadata(schema)?;
+    ensure_no_function_bindings_for_mutation(schema, "Function binding declaration")?;
    if application.has_unknown_fields() {
        return Err(Error::NotSupported {
            message: "Function application contains fields from a newer contract".into(),
@@ -862,9 +828,8 @@ pub(crate) fn plan_function_application(
                input.parameter
            ))
        })?;
-        let resolved = resolve_field_path(schema, path)?;
-        if resolved
-            .root
+        let field = resolve_field_path(schema, path)?;
+        if field
            .metadata()
            .get(COMPUTED_COLUMN_META_KEY)
            .map(String::as_str)
@@ -874,7 +839,6 @@ pub(crate) fn plan_function_application(
                "Function input '{path}' is computed; computed-on-computed bindings are not supported"
            )));
        }
-        let field = resolved.leaf;
        let parameter_field = ArrowField::new(
            input.parameter.clone(),
            field.data_type().clone(),
@@ -1498,7 +1462,9 @@ fn plan_declarations(schema: SchemaRef, columns: &[(String, String)]) -> Result<

    for (name, expression) in columns {
        if schema.field_with_name(name).is_ok() {
-            return Err(Error::ColumnAlreadyExists { name: name.clone() });
+            return Err(Error::ColumnAlreadyExists {
+                name: name.to_string(),
+            });
        }

        let bound = bind(schema.clone(), name, expression)?;
@@ -2615,37 +2581,6 @@ mod tests {
        ])
    }

-    fn valid_function_binding_schema(
-        title_nullable: bool,
-        body_nullable: bool,
-        binding: &FunctionBinding,
-    ) -> ArrowSchema {
-        let mut fields = function_binding_schema(title_nullable, body_nullable)
-            .fields()
-            .iter()
-            .map(|field| field.as_ref().clone())
-            .collect::<Vec<_>>();
-        let inputs = binding
-            .inputs()
-            .iter()
-            .map(|input| input.field_path.clone())
-            .collect::<Vec<_>>();
-        for output in binding.outputs() {
-            let index = fields
-                .iter()
-                .position(|field| field.name() == &output.output_name)
-                .unwrap();
-            fields[index] = fields[index]
-                .clone()
-                .with_metadata(function_computed_column_metadata(
-                    binding.binding_id(),
-                    output.output_ordinal,
-                    &inputs,
-                ));
-        }
-        ArrowSchema::new(fields)
-    }
-
    #[test]
    fn test_non_nullable_function_inputs_can_bind_to_nullable_parameters() {
        let binding = FunctionBinding::from_json(include_str!(
@@ -2653,11 +2588,7 @@ mod tests {
        ))
        .unwrap();

-        ensure_binding_matches_schema(
-            &valid_function_binding_schema(false, false, &binding),
-            &binding,
-        )
-        .unwrap();
+        ensure_binding_matches_schema(&function_binding_schema(false, false), &binding).unwrap();
    }

    #[test]
@@ -2670,11 +2601,8 @@ mod tests {
        raw_binding["input_schema"]["fields"][0]["nullable"] = Value::Bool(false);
        let binding: FunctionBinding = serde_json::from_value(raw_binding).unwrap();

-        let err = ensure_binding_matches_schema(
-            &valid_function_binding_schema(true, false, &binding),
-            &binding,
-        )
-        .unwrap_err();
+        let err = ensure_binding_matches_schema(&function_binding_schema(true, false), &binding)
+            .unwrap_err();
        assert!(
            matches!(&err, Error::InvalidInput { message }
                if message.contains("input column 'title' is nullable")
@@ -2685,73 +2613,6 @@ mod tests {
        );
    }

-    #[test]
-    fn test_second_binding_rejects_outputs_without_reciprocal_metadata() {
-        let binding = FunctionBinding::from_json(include_str!(
-            "../../tests/fixtures/first_class_functions/v1/remote_function_binding.json"
-        ))
-        .unwrap();
-        let schema = ArrowSchema::new_with_metadata(
-            function_binding_schema(true, true).fields().to_vec(),
-            HashMap::from([(
-                FUNCTION_BINDINGS_META_KEY.to_string(),
-                function_bindings_metadata(std::slice::from_ref(&binding)).unwrap(),
-            )]),
-        );
-
-        let err = plan_function_application(
-            &schema,
-            &named_struct_application(
-                r#"{"normalized_text":"secondary_text","token_count":"secondary_token_count"}"#,
-            ),
-            None,
-        )
-        .unwrap_err();
-        assert!(
-            matches!(&err, Error::InvalidInput { message }
-                if message.contains("declaration metadata")
-                    && message.contains("fb_01K3TEXT")),
-            "{err:?}"
-        );
-    }
-
-    #[test]
-    fn test_persisted_nested_input_keeps_leaf_level_validation() {
-        let mut raw_binding: Value = serde_json::from_str(include_str!(
-            "../../tests/fixtures/first_class_functions/v1/remote_function_binding.json"
-        ))
-        .unwrap();
-        raw_binding["inputs"][0]["field_path"] = Value::String("title.value".to_string());
-        let binding: FunctionBinding = serde_json::from_value(raw_binding).unwrap();
-        let title = ArrowField::new(
-            "title",
-            DataType::Struct(vec![ArrowField::new("value", DataType::Utf8, true)].into()),
-            true,
-        )
-        .with_metadata(HashMap::from([
-            (COMPUTED_COLUMN_META_KEY.to_string(), "true".to_string()),
-            (KIND_META_KEY.to_string(), SQL_KIND.to_string()),
-            (EXPRESSION_META_KEY.to_string(), "title".to_string()),
-        ]));
-        let mut fields = vec![title, ArrowField::new("body", DataType::Utf8, true)];
-        fields.extend(binding.outputs().iter().map(|output| {
-            let data_type = match output.arrow_type.as_str() {
-                "utf8" => DataType::Utf8,
-                "int64" => DataType::Int64,
-                other => panic!("unexpected fixture output type {other}"),
-            };
-            ArrowField::new(&output.output_name, data_type, true).with_metadata(
-                function_computed_column_metadata(
-                    binding.binding_id(),
-                    output.output_ordinal,
-                    &["title.value".into(), "body".into()],
-                ),
-            )
-        }));
-
-        ensure_binding_matches_schema(&ArrowSchema::new(fields), &binding).unwrap();
-    }
-
    #[test]
    fn test_function_binding_metadata_survives_schema_round_trip() {
        let binding = FunctionBinding::from_json(include_str!(
@@ -2800,36 +2661,9 @@ mod tests {
                output_ordinal: 1,
            } if binding_id == "fb_01K3TEXT"
        ));
-        let dependent_application = FunctionApplication::from_json(
-            r#"{
-                "function":{"name":"dependent","version":"fv_dependent"},
-                "inputs":[
-                    {"parameter":"text","kind":"column","value":{"path":"search_text"}}
-                ],
-                "output":{"kind":"scalar","arrow_type":"int64","nullable":false}
-            }"#,
-        )
-        .unwrap();
-        let err = plan_function_application(&reopened, &dependent_application, Some("dependent"))
+        let err = plan_function_application(&reopened, &named_struct_application("{}"), None)
            .unwrap_err();
-        assert!(
-            matches!(&err, Error::InvalidInput { message } if message.contains("computed-on-computed"))
-        );
-        let plan = plan_function_application(
-            &reopened,
-            &named_struct_application(
-                r#"{"normalized_text":"secondary_text","token_count":"secondary_token_count"}"#,
-            ),
-            None,
-        )
-        .unwrap();
-        assert_eq!(
-            plan.outputs
-                .iter()
-                .map(|output| output.output_name.as_str())
-                .collect::<Vec<_>>(),
-            ["secondary_text", "secondary_token_count"]
-        );
+        assert!(matches!(err, Error::NotSupported { .. }));
    }

    #[test]
@@ -2985,38 +2819,5 @@ mod tests {
        assert!(
            matches!(&err, Error::InvalidInput { message } if message.contains("computed-on-computed"))
        );
-
-        let nested_title = ArrowField::new(
-            "title",
-            DataType::Struct(vec![ArrowField::new("value", DataType::Utf8, true)].into()),
-            true,
-        )
-        .with_metadata(HashMap::from([
-            (COMPUTED_COLUMN_META_KEY.to_string(), "true".to_string()),
-            (KIND_META_KEY.to_string(), SQL_KIND.to_string()),
-            (
-                EXPRESSION_META_KEY.to_string(),
-                "struct('value')".to_string(),
-            ),
-        ]));
-        let nested_schema = ArrowSchema::new(vec![nested_title, schema.field(1).as_ref().clone()]);
-        let nested_application = FunctionApplication::from_json(
-            r#"{
-                "function":{"name":"text_features","version":"fv_exact"},
-                "inputs":[
-                    {"parameter":"title","kind":"column","value":{"path":"title.value"}},
-                    {"parameter":"body","kind":"column","value":{"path":"body"}}
-                ],
-                "output":{"kind":"named_struct","fields":[
-                    {"name":"normalized_text","arrow_type":"utf8","nullable":false},
-                    {"name":"token_count","arrow_type":"int64","nullable":false}
-                ]}
-            }"#,
-        )
-        .unwrap();
-        let err = plan_function_application(&nested_schema, &nested_application, None).unwrap_err();
-        assert!(
-            matches!(&err, Error::InvalidInput { message } if message.contains("computed-on-computed"))
-        );
    }
 }
Author	SHA1	Message	Date
Xuanwo	d8f321c1f4	refactor(functions): use a GPU capability marker	2026-08-30 20:06:14 +08:00
Xuanwo	1443bf703f	refactor(functions): simplify GPU requirements	2026-08-29 19:12:45 +08:00
lancedb automation	9e8140ff88	chore: update lance dependency to v12.0.0-beta.4	2026-08-29 02:19:43 +08:00
Xuanwo	77c6dffc4a	feat(functions): support GPU resource requirements	2026-08-29 02:13:09 +08:00