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fix: gate experimental local functions behind an opt-in feature (#4688)

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Published SDK builds currently expose local SQL computed columns and
materialized-view execution that are not ready for release. Add the
opt-in `experimental-functions` Cargo feature to the Rust core and
forward it through the Python and Node bindings; published packages
leave it disabled.

Local declarations and refreshes now return `NotSupported` before
mutating tables or spawning jobs, including prepared materialized-view
creation. Remote Cloud/Enterprise client operations, Python UDF
packaging, ordinary eager `add_columns`, and access to existing data
remain available. Stored metadata and write protections stay active, and
shared server commit helpers remain usable.

CI covers both feature configurations. Existing local execution tests
run with the feature enabled; default-build regressions cover early
rejection, unchanged table versions, existing metadata protections, and
normal eager transforms. API and source-build documentation explain the
opt-in.

Validation: Rust library tests pass with the feature disabled (1,869
tests) and enabled (1,947 tests), plus three default-build integration
regressions. Python and TypeScript bindings were rebuilt and tested in
both configurations, including mocked remote requests; Rust formatting,
Python package lint, TypeScript lint/build, and generated docs were
checked. Repository-wide Ruff still reports 48 pre-existing errors in
unchanged `docs/web-tests` files.
This commit is contained in:
Xuanwo
2026-10-27 14:32:09 +08:00
committed by GitHub
parent dcbf5ce66a
commit 8a4effa06a
41 changed files with 955 additions and 66 deletions
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docs/src/python/python.md
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@@ -429,6 +429,13 @@ scoped to each invocation and support `read`, `readinto`, `seek`, `tell`,
## Materialized Views (Synchronous)
In the 0.41 SDK release, local materialized-view creation and refresh require a
source build with the `experimental-functions` Cargo feature. Published Python
packages leave it disabled. Opening, reading, listing and dropping existing views
remain available, as do remote Cloud and Enterprise operations. The same feature
requirement applies to local SQL computed-column declaration and refresh; ordinary
eager `add_columns` transforms remain available.
On Cloud and Enterprise, creation accepts `auto_refresh_enabled` and
`auto_refresh_interval_seconds`:
@@ -443,7 +450,8 @@ view = db.create_materialized_view(
Omit `auto_refresh_interval_seconds` to let the server determine when to refresh.
These options also apply to asynchronous creation and creation jobs. Embedded
connections support manual refresh and reject automatic scheduling requests.
connections built with `experimental-functions` support manual refresh and reject
automatic scheduling requests.
::: lancedb.materialized_view.MaterializedView