ci: resolve MSRV lockfile against rust-version instead of hand-pinned versions

The MSRV job pinned `aws-smithy-checksums` to 0.63.9, which requires
`crc-fast = "~1.3.0"`. Lance v11 pulls in opendal 0.58.1, whose
`opendal-service-s3` requires `crc-fast = "^1.9.0"`, so the downgrade step
failed to resolve.

Replace the hand-maintained pin list with cargo's MSRV-aware resolution,
which picks the newest versions whose declared `rust-version` fits the
workspace MSRV.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

.github/workflows/rust.yml

@@ -276,38 +276,14 @@ jobs:
           # unreadable outside their own branch anyway, since GitHub scopes
           # caches to the creating ref.
           save-if: ${{ github.ref == 'refs/heads/main' }}
-      - name: Downgrade  dependencies
-        # These packages have newer requirements for MSRV
-        run: |
-          cargo update -p aws-sdk-bedrockruntime --precise 1.77.0
-          cargo update -p aws-sdk-dynamodb --precise 1.68.0
-          cargo update -p aws-config --precise 1.6.0
-          cargo update -p aws-sdk-kms --precise 1.63.0
-          cargo update -p aws-sdk-s3 --precise 1.79.0
-          cargo update -p aws-sdk-sso --precise 1.62.0
-          cargo update -p aws-sdk-ssooidc --precise 1.63.0
-          cargo update -p aws-sdk-sts --precise 1.63.0
-          # aws-runtime/sigv4/credential-types/types and the aws-smithy-*
-          # crates bumped their MSRV to 1.91.1 in late 2026; pin to the last
-          # 1.91.0-compatible versions. The order matters — each downgrade
-          # only succeeds once everything that still pins it at a higher
-          # version has itself been downgraded.
-          cargo update -p aws-runtime --precise 1.5.12
-          cargo update -p aws-types --precise 1.3.9
-          cargo update -p aws-sigv4 --precise 1.3.5
-          cargo update -p aws-credential-types --precise 1.2.8
-          cargo update -p aws-smithy-checksums --precise 0.63.9
-          cargo update -p aws-smithy-runtime --precise 1.9.3
-          cargo update -p aws-smithy-http --precise 0.62.4
-          cargo update -p aws-smithy-eventstream --precise 0.60.12
-          cargo update -p aws-smithy-http-client --precise 1.1.3
-          cargo update -p aws-smithy-observability --precise 0.1.4
-          cargo update -p aws-smithy-query --precise 0.60.8
-          cargo update -p aws-smithy-runtime-api --precise 1.9.1
-          cargo update -p aws-smithy-async --precise 1.2.6
-          cargo update -p aws-smithy-types --precise 1.3.5
-          cargo update -p aws-smithy-xml --precise 0.60.11
-          cargo update -p home --precise 0.5.9
+      - name: Downgrade dependencies that exceed our MSRV
+        # Re-resolve the lockfile against `rust-version` instead of hand-pinning
+        # every crate that raises its MSRV. Hand-pinning drifts: the pins keep
+        # ratcheting further back than needed and eventually contradict a real
+        # requirement elsewhere in the graph.
+        env:
+          CARGO_RESOLVER_INCOMPATIBLE_RUST_VERSIONS: fallback
+        run: cargo update
       - name: cargo +${{ matrix.msrv }} check
         env:
           RUSTUP_TOOLCHAIN: ${{ matrix.msrv }}

Cargo.toml

@@ -13,20 +13,20 @@ categories = ["database-implementations"]
 rust-version = "1.91.0"
 
 [workspace.dependencies]
-lance = { "version" = "=10.1.0-beta.1", default-features = false, "tag" = "v10.1.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
-lance-core = { "version" = "=10.1.0-beta.1", "tag" = "v10.1.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
-lance-datagen = { "version" = "=10.1.0-beta.1", "tag" = "v10.1.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
-lance-file = { "version" = "=10.1.0-beta.1", "tag" = "v10.1.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
-lance-io = { "version" = "=10.1.0-beta.1", default-features = false, "tag" = "v10.1.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
-lance-index = { "version" = "=10.1.0-beta.1", "tag" = "v10.1.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
-lance-linalg = { "version" = "=10.1.0-beta.1", "tag" = "v10.1.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
-lance-namespace = { "version" = "=10.1.0-beta.1", "tag" = "v10.1.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
-lance-namespace-impls = { "version" = "=10.1.0-beta.1", default-features = false, "tag" = "v10.1.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
-lance-table = { "version" = "=10.1.0-beta.1", "tag" = "v10.1.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
-lance-testing = { "version" = "=10.1.0-beta.1", "tag" = "v10.1.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
-lance-datafusion = { "version" = "=10.1.0-beta.1", "tag" = "v10.1.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
-lance-encoding = { "version" = "=10.1.0-beta.1", "tag" = "v10.1.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
-lance-arrow = { "version" = "=10.1.0-beta.1", "tag" = "v10.1.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
+lance = { "version" = "=11.0.0-beta.1", default-features = false, "tag" = "v11.0.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
+lance-core = { "version" = "=11.0.0-beta.1", "tag" = "v11.0.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
+lance-datagen = { "version" = "=11.0.0-beta.1", "tag" = "v11.0.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
+lance-file = { "version" = "=11.0.0-beta.1", "tag" = "v11.0.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
+lance-io = { "version" = "=11.0.0-beta.1", default-features = false, "tag" = "v11.0.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
+lance-index = { "version" = "=11.0.0-beta.1", "tag" = "v11.0.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
+lance-linalg = { "version" = "=11.0.0-beta.1", "tag" = "v11.0.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
+lance-namespace = { "version" = "=11.0.0-beta.1", "tag" = "v11.0.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
+lance-namespace-impls = { "version" = "=11.0.0-beta.1", default-features = false, "tag" = "v11.0.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
+lance-table = { "version" = "=11.0.0-beta.1", "tag" = "v11.0.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
+lance-testing = { "version" = "=11.0.0-beta.1", "tag" = "v11.0.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
+lance-datafusion = { "version" = "=11.0.0-beta.1", "tag" = "v11.0.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
+lance-encoding = { "version" = "=11.0.0-beta.1", "tag" = "v11.0.0-beta.1", "git" = "https://github.com/lance-format/lance.git" }
+lance-arrow = { "version" = "=11.0.0-beta.1", "tag" = "v11.0.0-beta.1", "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 }

docs/src/python/python.md

@@ -180,21 +180,6 @@ instead of being materialized with the rest of the row.
 
 ::: lancedb.otel.instrument_lancedb_metrics
 
-## Legacy V2 migration
-
-Tables created with the experimental V2 format in LanceDB Node 0.5.x can be
-rewritten with the legacy PyLance reader. In a dedicated environment, install
-LanceDB normally, then install the legacy reader without its obsolete PyArrow
-upper bound and run the migration:
-
-```shell
-pip install lancedb
-pip install --no-deps pylance==0.12.1
-python -m lancedb.legacy_v2 <database-uri>
-```
-
-::: lancedb.legacy_v2.migrate_legacy_v2_tables
-
 ## Exceptions
 
 ::: lancedb.exceptions.MissingValueError

java/pom.xml

@@ -28,7 +28,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <arrow.version>15.0.0</arrow.version>
-        <lance-core.version>10.1.0-beta.1</lance-core.version>
+        <lance-core.version>11.0.0-beta.1</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>

python/python/lancedb/db.py

@@ -707,9 +707,6 @@ class LanceDBConnection(DBConnection):
         self._namespace_client_properties = namespace_client_properties
         if _inner is not None:
             self._conn = _inner
-            # Native-derived wrappers resolve this in their async reconstruction
-            # path so construction never synchronously re-enters LOOP.
-            self._read_consistency_interval = read_consistency_interval
             self._cached_namespace_client = None
             return
 
@@ -759,14 +756,11 @@ class LanceDBConnection(DBConnection):
         # storage_options.  Also, this class really shouldn't be holding any state
         # beyond _conn.
         self._conn = AsyncConnection(LOOP.run(do_connect()))
-        # Keep property access synchronous so debugger introspection cannot wait on
-        # the background loop while that thread is suspended at a breakpoint.
-        self._read_consistency_interval = read_consistency_interval
         self._cached_namespace_client: Optional[LanceNamespace] = None
 
     @property
     def read_consistency_interval(self) -> Optional[timedelta]:
-        return self._read_consistency_interval
+        return LOOP.run(self._conn.get_read_consistency_interval())
 
     @property
     def session(self) -> Optional[Session]:
@@ -777,16 +771,8 @@ class LanceDBConnection(DBConnection):
         return self._conn.uri
 
     @classmethod
-    def from_inner(
-        cls,
-        inner: LanceDbConnection,
-        read_consistency_interval: Optional[timedelta],
-    ):
-        return cls(
-            None,
-            read_consistency_interval=read_consistency_interval,
-            _inner=inner,
-        )
+    def from_inner(cls, inner: LanceDbConnection):
+        return cls(None, _inner=inner)
 
     def __repr__(self) -> str:
         return f"{self.__class__.__name__}(uri={self._conn.uri!r})"

python/python/lancedb/legacy_v2.py

@@ -1,263 +0,0 @@
-# SPDX-License-Identifier: Apache-2.0
-# SPDX-FileCopyrightText: Copyright The LanceDB Authors
-
-"""Recovery utilities for the experimental V2 format used by old Node releases."""
-
-from __future__ import annotations
-
-import argparse
-import asyncio
-import inspect
-import warnings
-from collections.abc import Iterable
-from typing import Any
-
-from packaging.version import Version
-
-import lancedb
-
-__all__ = ["migrate_legacy_v2_tables"]
-
-_LEGACY_LANCE_VERSION = Version("0.12.1")
-_LEGACY_V2_ERROR_MARKERS = (
-    "missing columnencoding encoding description",
-    "missing lance.encodings.columnencoding encoding description",
-    "was missing a columnencoding",
-    "rust future panicked",
-    "panic in async function",
-)
-
-
-def _require_legacy_lance() -> Any:
-    try:
-        import lance
-    except ImportError as error:
-        raise RuntimeError(
-            "Legacy V2 migration requires pylance==0.12.1. Install it in a "
-            "dedicated environment with "
-            "`pip install --no-deps pylance==0.12.1`."
-        ) from error
-
-    version = Version(lance.__version__)
-    if version != _LEGACY_LANCE_VERSION:
-        raise RuntimeError(
-            "Legacy V2 migration requires pylance==0.12.1, but found "
-            f"pylance=={version}. Reinstall it with "
-            "`pip install --no-deps --force-reinstall pylance==0.12.1`."
-        )
-    return lance
-
-
-def _exception_messages(error: BaseException) -> Iterable[str]:
-    seen: set[int] = set()
-    current: BaseException | None = error
-    while current is not None and id(current) not in seen:
-        seen.add(id(current))
-        yield str(current).lower()
-        current = current.__cause__ or current.__context__
-
-
-def _is_legacy_v2_error(error: BaseException) -> bool:
-    return any(
-        marker in message
-        for message in _exception_messages(error)
-        for marker in _LEGACY_V2_ERROR_MARKERS
-    )
-
-
-def _list_table_names(db: Any) -> list[str]:
-    list_tables = getattr(db, "list_tables", None)
-    if list_tables is not None:
-        # The deprecated table_names() API defaults to only ten results.
-        return list(list_tables(limit=None).tables)
-
-    # Compatibility for LanceDB 0.16, which was used by the original script.
-    with warnings.catch_warnings():
-        warnings.simplefilter("ignore", DeprecationWarning)
-        return list(db.table_names())
-
-
-async def _needs_migration(db: Any, table_name: str) -> bool:
-    table = await db.open_table(table_name)
-    try:
-        # One row is enough to load and validate the data-file metadata.
-        await table.query().limit(1).to_arrow()
-    except (KeyboardInterrupt, SystemExit, GeneratorExit):
-        raise
-    except BaseException as error:
-        if _is_legacy_v2_error(error):
-            return True
-        raise
-    return False
-
-
-async def _create_migrated_table(
-    db: Any, table_name: str, reader: Any, storage_format: str
-) -> Any:
-    parameters = inspect.signature(db.create_table).parameters
-    options: dict[str, Any] = {"mode": "overwrite"}
-    if "data_storage_version" in parameters:
-        # LanceDB 0.16 exposed the format as a direct create_table option.
-        options["data_storage_version"] = storage_format
-    else:
-        options["storage_options"] = {"new_table_data_storage_version": storage_format}
-    return await db.create_table(table_name, reader, **options)
-
-
-async def _migrate_table(
-    source_db: Any,
-    destination_db: Any,
-    table_name: str,
-    storage_format: str,
-) -> int:
-    source_table = source_db.open_table(table_name)
-    source_dataset = source_table.to_lance()
-    source_rows = source_dataset.count_rows()
-    reader = source_dataset.scanner().to_reader()
-
-    migrated_table = await _create_migrated_table(
-        destination_db, table_name, reader, storage_format
-    )
-    migrated_rows = await migrated_table.count_rows()
-    if migrated_rows != source_rows:
-        raise RuntimeError(
-            f"Migration of table {table_name!r} wrote {migrated_rows} rows; "
-            f"expected {source_rows}."
-        )
-
-    # Force the current reader to load data-file metadata before reporting success.
-    await migrated_table.query().limit(1).to_arrow()
-    return migrated_rows
-
-
-async def migrate_legacy_v2_tables(
-    uri: str,
-    *,
-    table_name: str | None = None,
-    destination_uri: str | None = None,
-    storage_format: str = "2.0",
-    show_progress: bool = True,
-) -> list[str]:
-    """Migrate tables written with the incompatible experimental V2 format.
-
-    LanceDB Node 0.5.x could enable an experimental data format when an empty
-    table was created and data was added later. Those files panic older modern
-    readers and are rejected by newer readers. This utility streams them through
-    ``pylance==0.12.1`` and rewrites them in a supported format.
-
-    Install the legacy reader in a dedicated environment before running this
-    function::
-
-        pip install lancedb
-        pip install --no-deps pylance==0.12.1
-
-    ``--no-deps`` is required because the legacy wheel declares an obsolete
-    PyArrow upper bound. The migration uses only its dataset scanner and writes
-    through the current LanceDB package.
-
-    This migration is available only for local/OSS databases, including object
-    storage URIs. It is not supported for LanceDB Cloud ``db://`` connections.
-    In-place migration creates a new table version, so old data remains available
-    for recovery until old versions are cleaned up. Table indices are not copied
-    and should be rebuilt after migration.
-
-    Parameters
-    ----------
-    uri : str
-        Source LanceDB database URI.
-    table_name : str, optional
-        Migrate only this table. By default, inspect every table.
-    destination_uri : str, optional
-        Write to another database. By default, migrate in place.
-    storage_format : str, default "2.0"
-        Data storage format for the rewritten tables. Use ``"0.1"`` for
-        compatibility with older LanceDB releases.
-    show_progress : bool, default True
-        Display progress bars while inspecting and migrating tables.
-
-    Returns
-    -------
-    list of str
-        Names of the migrated tables.
-    """
-    if uri.startswith("db://") or (
-        destination_uri is not None and destination_uri.startswith("db://")
-    ):
-        raise ValueError("Legacy V2 migration is supported only for local/OSS tables")
-
-    # Import and validate before opening or modifying any table.
-    _require_legacy_lance()
-
-    source_db = lancedb.connect(uri)
-    async_source_db = await lancedb.connect_async(uri)
-    destination_db = (
-        async_source_db
-        if destination_uri is None or destination_uri == uri
-        else await lancedb.connect_async(destination_uri)
-    )
-
-    if table_name is not None:
-        table_names = [table_name]
-    else:
-        table_names = _list_table_names(source_db)
-
-    inspection: Iterable[str] = table_names
-    if show_progress:
-        from tqdm.auto import tqdm
-
-        inspection = tqdm(table_names, desc="Checking tables")
-
-    tables_to_migrate = [
-        name for name in inspection if await _needs_migration(async_source_db, name)
-    ]
-
-    migration: Iterable[str] = tables_to_migrate
-    if show_progress:
-        from tqdm.auto import tqdm
-
-        migration = tqdm(tables_to_migrate, desc="Migrating tables")
-
-    migrated = []
-    for name in migration:
-        await _migrate_table(source_db, destination_db, name, storage_format)
-        migrated.append(name)
-    return migrated
-
-
-def _parser() -> argparse.ArgumentParser:
-    parser = argparse.ArgumentParser(
-        description="Migrate tables written with the old experimental V2 format."
-    )
-    parser.add_argument("uri", help="source LanceDB database URI")
-    parser.add_argument("--table-name", help="migrate only this table")
-    parser.add_argument("--destination-uri", help="write to another database URI")
-    parser.add_argument(
-        "--storage-format",
-        default="2.0",
-        help='destination data format (default: "2.0"; use "0.1" for compatibility)',
-    )
-    parser.add_argument(
-        "--no-progress", action="store_true", help="disable progress bars"
-    )
-    return parser
-
-
-def main() -> None:
-    args = _parser().parse_args()
-    migrated = asyncio.run(
-        migrate_legacy_v2_tables(
-            args.uri,
-            table_name=args.table_name,
-            destination_uri=args.destination_uri,
-            storage_format=args.storage_format,
-            show_progress=not args.no_progress,
-        )
-    )
-    if migrated:
-        print(f"Migrated {len(migrated)} table(s): {', '.join(migrated)}")
-    else:
-        print("No legacy V2 tables found")
-
-
-if __name__ == "__main__":
-    main()

python/python/lancedb/permutation.py

@@ -226,7 +226,7 @@ class PermutationBuilder:
 
         async def do_execute():
             inner_tbl = await self._async.execute()
-            return await LanceTable.from_inner(inner_tbl)
+            return LanceTable.from_inner(inner_tbl)
 
         return LOOP.run(do_execute())
 

python/python/lancedb/table.py

@@ -2182,15 +2182,11 @@ class LanceTable(Table):
         return self.name
 
     @classmethod
-    async def from_inner(cls, tbl: LanceDBTable):
-        from .db import AsyncConnection, LanceDBConnection
+    def from_inner(cls, tbl: LanceDBTable):
+        from .db import LanceDBConnection
 
         async_tbl = AsyncTable(tbl)
-        inner_conn = tbl.database()
-        read_consistency_interval = await AsyncConnection(
-            inner_conn
-        ).get_read_consistency_interval()
-        conn = LanceDBConnection.from_inner(inner_conn, read_consistency_interval)
+        conn = LanceDBConnection.from_inner(tbl.database())
         return cls(
             conn,
             async_tbl.name,

python/python/tests/test_db.py

@@ -77,23 +77,6 @@ def test_sync_repr_does_not_use_background_loop(tmp_path, monkeypatch):
     assert repr(table) == f"LanceTable(name='test', _conn={db!r})"
 
 
-def test_read_consistency_interval_does_not_use_background_loop(tmp_path, monkeypatch):
-    from lancedb.background_loop import LOOP
-    from lancedb.db import LanceDBConnection
-
-    consistency_interval = timedelta(seconds=5)
-    db = lancedb.connect(tmp_path, read_consistency_interval=consistency_interval)
-    db_from_inner = LanceDBConnection.from_inner(db._inner, consistency_interval)
-
-    def fail_run(*args, **kwargs):
-        raise AssertionError("properties should not use the Python background loop")
-
-    monkeypatch.setattr(LOOP, "run", fail_run)
-
-    assert db.read_consistency_interval == consistency_interval
-    assert db_from_inner.read_consistency_interval == consistency_interval
-
-
 def test_ingest_pd(tmp_path):
     db = lancedb.connect(tmp_path)
 

python/python/tests/test_legacy_v2.py

@@ -1,165 +0,0 @@
-from unittest.mock import AsyncMock, Mock
-
-import pytest
-
-from lancedb import legacy_v2
-
-
-class FakeQuery:
-    def __init__(self, error=None):
-        self.error = error
-
-    def limit(self, _limit):
-        return self
-
-    async def to_arrow(self):
-        if self.error is not None:
-            raise self.error
-        return None
-
-
-class FakeAsyncTable:
-    def __init__(self, rows=2, error=None):
-        self.rows = rows
-        self.error = error
-
-    def query(self):
-        return FakeQuery(self.error)
-
-    async def count_rows(self):
-        return self.rows
-
-
-class FakeDataset:
-    def __init__(self, reader, rows=2):
-        self.reader = reader
-        self.rows = rows
-
-    def count_rows(self):
-        return self.rows
-
-    def scanner(self):
-        scanner = Mock()
-        scanner.to_reader.return_value = self.reader
-        return scanner
-
-
-@pytest.mark.asyncio
-@pytest.mark.parametrize(
-    "message",
-    [
-        "rust future panicked: unknown error",
-        "Panic in async function",
-        "Missing ColumnEncoding encoding description",
-        "Missing lance.encodings.ColumnEncoding encoding description",
-        "the column at index 0 was missing a ColumnEncoding",
-    ],
-)
-async def test_needs_migration_recognizes_legacy_reader_errors(message):
-    db = Mock()
-    db.open_table = AsyncMock(return_value=FakeAsyncTable(error=RuntimeError(message)))
-
-    assert await legacy_v2._needs_migration(db, "legacy")
-
-
-@pytest.mark.asyncio
-async def test_needs_migration_propagates_unrelated_errors():
-    db = Mock()
-    db.open_table = AsyncMock(
-        return_value=FakeAsyncTable(error=RuntimeError("permission denied"))
-    )
-
-    with pytest.raises(RuntimeError, match="permission denied"):
-        await legacy_v2._needs_migration(db, "legacy")
-
-
-@pytest.mark.asyncio
-async def test_migration_streams_and_verifies_rows(monkeypatch):
-    reader = object()
-    source_dataset = FakeDataset(reader)
-    source_table = Mock()
-    source_table.to_lance.return_value = source_dataset
-    source_db = Mock()
-    source_db.list_tables.return_value.tables = ["healthy", "legacy"]
-    source_db.open_table.return_value = source_table
-
-    legacy_error = RuntimeError(
-        "Missing lance.encodings.ColumnEncoding encoding description"
-    )
-    async_source_db = Mock()
-
-    async def open_table(name):
-        if name == "legacy":
-            return FakeAsyncTable(error=legacy_error)
-        return FakeAsyncTable()
-
-    async_source_db.open_table = open_table
-    create_calls = []
-
-    async def create_table(name, data, *, mode, storage_options):
-        create_calls.append((name, data, mode, storage_options))
-        return FakeAsyncTable()
-
-    async_source_db.create_table = create_table
-
-    monkeypatch.setattr(legacy_v2, "_require_legacy_lance", Mock())
-    monkeypatch.setattr(legacy_v2.lancedb, "connect", Mock(return_value=source_db))
-
-    async def connect_async(_uri):
-        return async_source_db
-
-    monkeypatch.setattr(legacy_v2.lancedb, "connect_async", connect_async)
-
-    migrated = await legacy_v2.migrate_legacy_v2_tables("/data/db", show_progress=False)
-
-    assert migrated == ["legacy"]
-    source_db.list_tables.assert_called_once_with(limit=None)
-    assert create_calls == [
-        (
-            "legacy",
-            reader,
-            "overwrite",
-            {"new_table_data_storage_version": "2.0"},
-        )
-    ]
-
-
-def test_list_table_names_supports_legacy_connection():
-    db = Mock(spec=["table_names"])
-    db.table_names.return_value = [f"table_{index}" for index in range(12)]
-
-    assert len(legacy_v2._list_table_names(db)) == 12
-
-
-@pytest.mark.asyncio
-async def test_create_table_uses_legacy_storage_parameter():
-    calls = []
-
-    class LegacyConnection:
-        async def create_table(self, name, data, *, mode, data_storage_version=None):
-            calls.append((name, data, mode, data_storage_version))
-            return FakeAsyncTable()
-
-    reader = object()
-    await legacy_v2._create_migrated_table(LegacyConnection(), "legacy", reader, "0.1")
-
-    assert calls == [("legacy", reader, "overwrite", "0.1")]
-
-
-def test_requires_exact_legacy_lance_version(monkeypatch):
-    fake_lance = Mock(__version__="9.0.0")
-    monkeypatch.setitem(__import__("sys").modules, "lance", fake_lance)
-
-    with pytest.raises(RuntimeError, match="requires pylance==0.12.1"):
-        legacy_v2._require_legacy_lance()
-
-
-@pytest.mark.asyncio
-async def test_cloud_migration_is_rejected_before_dependency_check(monkeypatch):
-    require_lance = Mock()
-    monkeypatch.setattr(legacy_v2, "_require_legacy_lance", require_lance)
-
-    with pytest.raises(ValueError, match="only for local/OSS"):
-        await legacy_v2.migrate_legacy_v2_tables("db://example")
-
-    require_lance.assert_not_called()

python/python/tests/test_permutation.py

@@ -6,7 +6,6 @@ import math
 import pytest
 
 from lancedb import DBConnection, Table, connect
-from lancedb.background_loop import LOOP
 from lancedb.permutation import Permutation, Permutations, permutation_builder
 
 
@@ -32,25 +31,6 @@ def test_split_random_ratios(mem_db):
     assert 65 <= split_1_count <= 75  # ~70% ± tolerance
 
 
-def test_execute_does_not_reenter_background_loop(tmp_path, monkeypatch):
-    import threading
-
-    db = connect(tmp_path)
-    tbl = db.create_table("test_table", pa.table({"x": range(10)}))
-    original_run = LOOP.run
-
-    def fail_on_reentry(future):
-        assert threading.current_thread() is not LOOP.thread
-        return original_run(future)
-
-    monkeypatch.setattr(LOOP, "run", fail_on_reentry)
-
-    permutation_tbl = permutation_builder(tbl).execute()
-
-    assert permutation_tbl.count_rows() == 10
-    assert permutation_tbl._conn.read_consistency_interval is None
-
-
 def test_split_random_counts(mem_db):
     """Test random splitting with absolute counts."""
     tbl = mem_db.create_table(

python/python/tests/test_table.py

@@ -6,7 +6,6 @@ import os
 import sys
 import threading
 import warnings
-from concurrent.futures import ThreadPoolExecutor
 from datetime import date, datetime, timedelta
 from time import sleep
 from typing import List
@@ -2125,27 +2124,6 @@ def test_delete(mem_db: DBConnection):
     assert table.to_arrow()["id"].to_pylist() == [1]
 
 
-def test_concurrent_deletes_are_thread_safe(mem_db: DBConnection):
-    num_workers = 8
-    table = mem_db.create_table(
-        "my_table", data=[{"id": row_id} for row_id in range(num_workers)]
-    )
-    barrier = threading.Barrier(num_workers)
-
-    def delete(row_id: int):
-        barrier.wait()
-        return table.delete(f"id = {row_id}")
-
-    with ThreadPoolExecutor(max_workers=num_workers) as pool:
-        results = list(pool.map(delete, range(num_workers)))
-
-    assert all(result.num_deleted_rows == 1 for result in results)
-    assert sorted(result.version for result in results) == list(
-        range(2, num_workers + 2)
-    )
-    assert table.count_rows() == 0
-
-
 def test_delete_expr(mem_db: DBConnection):
     table = mem_db.create_table(
         "my_table",

python/src/table.rs

@@ -745,9 +745,6 @@ impl Table {
 
     #[allow(private_interfaces)]
     pub fn delete(self_: PyRef<'_, Self>, condition: PredicateArg) -> PyResult<Bound<'_, PyAny>> {
-        // Do not hold the Python borrow across the await.  The cloned Rust table
-        // handle is thread-safe and allows deletes on the same Python table to
-        // run concurrently without PyO3 reporting "Already borrowed".
         let inner = self_.inner_ref()?.clone();
         future_into_py(self_.py(), async move {
             let result = match &condition {

rust/lancedb/Cargo.toml

@@ -49,8 +49,8 @@ lance-namespace = { workspace = true }
 lance-namespace-impls = { workspace = true }
 metrics = { workspace = true, optional = true }
 metrics-util = { workspace = true, optional = true }
-# Pin the transitive GooseFS SDK until the 0.1.6 compile break is fixed upstream.
-goosefs-sdk = { version = "=0.1.5", optional = true }
+# Pin the GooseFS SDK to the version required by Lance's OpenDAL dependency.
+goosefs-sdk = { version = "=0.1.9", optional = true }
 moka = { workspace = true }
 pin-project = { workspace = true }
 tokio = { version = "1.23", features = ["rt-multi-thread", "sync"] }

rust/lancedb/src/blob.rs

@@ -17,7 +17,7 @@ use arrow_array::builder::LargeBinaryBuilder;
 use arrow_schema::{DataType, Field, Schema};
 use lance::dataset::{BlobRangeRequest as LanceBlobRangeRequest, Dataset, WriteParams};
 use lance_arrow::FieldExt;
-use lance_encoding::version::LanceFileVersion;
+use lance_file::version::LanceFileVersion;
 use lance_io::object_store::ObjectStore;
 use object_store::path::Path;
 

rust/lancedb/src/connection.rs

@@ -34,7 +34,7 @@ use crate::remote::{
     db::{OPT_REMOTE_API_KEY, OPT_REMOTE_HOST_OVERRIDE, OPT_REMOTE_REGION},
 };
 use lance::io::ObjectStoreParams;
-pub use lance_encoding::version::LanceFileVersion;
+pub use lance_file::version::LanceFileVersion;
 #[cfg(feature = "remote")]
 use lance_io::object_store::StorageOptions;
 use lance_io::object_store::{StorageOptionsAccessor, StorageOptionsProvider};

rust/lancedb/src/database/listing.rs

@@ -12,7 +12,7 @@ use lance::dataset::refs::Ref;
 use lance::dataset::{ReadParams, WriteMode, builder::DatasetBuilder};
 use lance::io::{ObjectStore, ObjectStoreParams, WrappingObjectStore};
 use lance_datafusion::utils::StreamingWriteSource;
-use lance_encoding::version::LanceFileVersion;
+use lance_file::version::LanceFileVersion;
 use lance_io::object_store::{StorageOptionsAccessor, StorageOptionsProvider};
 use lance_table::io::commit::commit_handler_from_url;
 use object_store::local::LocalFileSystem;

rust/lancedb/src/database/namespace.rs

@@ -201,7 +201,7 @@ impl LanceNamespaceDatabase {
         &self,
         request: &DbCreateTableRequest,
     ) -> Result<(
-        Option<lance_encoding::version::LanceFileVersion>,
+        Option<lance_file::version::LanceFileVersion>,
         Option<bool>,
         Option<bool>,
     )> {
@@ -214,7 +214,7 @@ impl LanceNamespaceDatabase {
 
         let storage_version_override = storage_options
             .and_then(|opts| opts.get(OPT_NEW_TABLE_STORAGE_VERSION))
-            .map(|s| s.parse::<lance_encoding::version::LanceFileVersion>())
+            .map(|s| s.parse::<lance_file::version::LanceFileVersion>())
             .transpose()?;
 
         let v2_manifest_override = storage_options

rust/lancedb/src/remote/table.rs

@@ -2939,7 +2939,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
 }
 
 #[derive(Serialize, Clone, Debug)]
-pub(crate) struct MergeInsertRequest {
+pub struct MergeInsertRequest {
     on: String,
     when_matched_update_all: bool,
     when_matched_update_all_filt: Option<String>,

rust/lancedb/src/remote/table/blobs.rs

@@ -90,7 +90,7 @@ struct RemoteBlobState {
 
 /// Seekable Cloud blob handle over HTTP Range.
 #[derive(Debug)]
-pub(crate) struct RemoteBlobFile {
+pub struct RemoteBlobFile {
     requester: Arc<dyn BlobRangeRequester>,
     state: Mutex<RemoteBlobState>,
     closed: AtomicBool,

rust/lancedb/src/remote/table/insert.rs

@@ -33,7 +33,7 @@ use crate::table::{AddResult, MergeResult};
 /// same Arrow-IPC streaming body and error side-channel; only the target
 /// endpoint, query parameters, and parsed result type differ.
 #[derive(Debug, Clone)]
-pub(crate) enum WriteOp {
+pub enum WriteOp {
     /// `add`: stream to `/v1/table/{id}/insert/`, optionally overwriting.
     Insert { overwrite: bool },
     /// `merge_insert`: stream to `/v1/table/{id}/merge_insert/` with the merge
@@ -49,7 +49,7 @@ pub(crate) enum WriteOp {
 /// The parsed server response for a completed write, discriminated by the
 /// operation that produced it.
 #[derive(Debug, Clone)]
-pub(crate) enum WriteResult {
+pub enum WriteResult {
     Add(AddResult),
     Merge(MergeResult),
 }

rust/lancedb/tests/blob_integration.rs

@@ -10,7 +10,7 @@ use arrow_array::{
 use arrow_schema::{DataType, Field, Fields, Schema};
 use futures::TryStreamExt;
 use lance::Dataset;
-use lance_encoding::version::LanceFileVersion;
+use lance_file::version::LanceFileVersion;
 use lancedb::{
     Connection, Error, Result, Table,
     blob::{BlobRangeRequest, blob},