ChatStreamingView built an IN filter from every permitted document id
for the "chat over all documents" case, which exceeds the vector
store's SQLite bound-parameter safety limit on installs with more
than ~32700 documents, silently returning no context. For a user who
can see every document (an active superuser), that filter never
narrows anything, so skip it and let the retriever search the whole
index instead.
In tracemalloc based profiling, not materializing the whole Document list
reduced memory to approximately 20% of the baseline, with a peak memory
that scaled with the library size. Now, the lazt queryset is used and only
the needed pk value is actually contributing to memory
* Chore(beta): add sqlite-vec 0.1.9 dependency
Pinned exactly: the 0.1.9 wheels carry no baked SIMD flags (safe on
pre-AVX2 CPUs, the point of this migration); the 0.1.10 alphas bake
-mavx and would reintroduce the #12970 crash class.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* Test(beta): port vector store tests to sqlite-vec backend
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* Enhancement(beta): switch AI vector store from LanceDB to sqlite-vec
Fixes the non-AVX2 SIGILL class (#12970) at the root: lancedb is no
longer imported. sqlite-vec 0.1.9 wheels carry no baked SIMD, vec0
metadata columns give parameterized EQ/IN filtering, WAL preserves the
lock-free-reader model, and compact() rebuilds the table because vec0
DELETEs never reclaim space.
Implementation notes vs. the Task 3A draft:
- compact() uses a file-swap approach (new db file + Path.replace) rather
than ALTER TABLE RENAME, which does not cascade to shadow tables in
sqlite-vec 0.1.9 (upstream limitation).
- Bloat is tracked via a cumulative total_inserts counter in index_meta
because the _rowids shadow table does not accumulate deleted rows in
0.1.9 (contrary to the design doc assumption from #54).
- None distances from the zero-vector cosine edge case are mapped to
similarity 0.0 rather than raising TypeError.
- Test suite updated accordingly: _bloat_ratio reads index_meta instead
of _rowids; seed collision in force-compact test fixed (seed=100.0).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* Enhancement(beta): wire indexing pipeline to the sqlite-vec store
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* Enhancement(beta): move filename/storage path/ASN to node metadata
Same treatment as title/tags/correspondent in #12944: excluded from
the embedded text, visible to the LLM via metadata prepend. Changes
embedded text for every document, so it ships inside the sqlite-vec
transition, whose forced rebuild re-embeds everything anyway.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* Test(beta): cover legacy LanceDB index cleanup and forced rebuild
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* Chore(beta): drop lancedb dependency
Fixes#12970: the package whose wheels SIGILL on non-AVX2 CPUs is no
longer installed at all.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* Chore(beta): partial pyrefly cleanup on sqlite-vec vector store
- Add MetadataFilter import and isinstance guard in _build_where()
- Add query_embedding None guard in query()
- Fix dict.get() type-checker ambiguity in get_configured_model_name()
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* Chore(beta): drop automatic LanceDB index cleanup on startup
Leave legacy Lance directory removal to the user rather than deleting it
automatically on first run. Beta policy: user is expected to do a clean
re-embed anyway; no need for the system to silently delete their data.
Remove _cleanup_legacy_lance_index(), the forced-rebuild path that called
it, and the associated tests.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* Chore(beta): ruff format pass on sqlite-vec AI files
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* Removes the benchmarking file
* Try to resolve or silence some semgrep. But we're using SQL here, not an ORM and we control the inputs, not users
* Enhancement(beta): add schema migration machinery to sqlite-vec vector store
Adds versioned schema migration support modelled after PR #12968's LanceDB
approach, adapted for sqlite-vec's file-swap compaction pattern.
- SCHEMA_VERSION = 1 written to index_meta at table creation and preserved
through compact()
- Migration dataclass with from_version, to_version, kind ("structural" or
"re-embed"), description, and an optional apply(src, dst, dim) callable
- MIGRATIONS registry (empty at v1 baseline); add entries and bump
SCHEMA_VERSION when the schema changes
- check_and_run_migrations(): structural migrations run via the same
file-swap as compact() (no re-embed); re-embed migrations return True
so the caller forces a full rebuild
- update_llm_index() calls check_and_run_migrations() under the write lock
before any indexing work
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* Chore(beta): deduplicate vector store internals via helper methods
Extract three helpers to remove copy-paste between compact() and
_run_structural_migration():
- _meta_set_on(conn, key, value): static upsert into any connection's
index_meta; _meta_set() now delegates to it
- _create_vec_table(conn, dim): CREATE VIRTUAL TABLE DDL (carries the
nosemgrep annotation)
- _swap_in_compact(compact_path, db_path): close/replace/reconnect
sequence used by both file-swap callers
Also normalises compact() error-path cleanup to unlink(missing_ok=True).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* Adds equality test and no covers some defensive error handling stuff
* Ensures an embed migration stops the migration chain, just in case
* Silence one kind right but not really semgrep
* Trims dead assignment
* Fix(beta): address Copilot review on sqlite-vec vector store
Three findings from the PR review:
- compact() failure cleanup now unlinks the temporary .compact-wal and
.compact-shm files, matching _run_structural_migration(); previously
only the main .compact file was removed.
- _build_where() fails closed (1 = 0) when filters are requested but none
translate, instead of emitting "()" which is invalid SQL; filters scope
document access, so an empty translation must match no rows.
- Drop the unused table_name constructor parameter (all SQL hardcodes
DEFAULT_TABLE_NAME) and its callers in indexing.py.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
* Enhancement(beta): guard sqlite-vec compaction swap against concurrent readers
The compaction/migration file swap replaces the database via os.replace,
but the -wal/-shm files are keyed by path, not inode. A reader holding an
open connection across the swap leaves the old WAL aliased onto the new
file; a subsequent write then corrupts the database (reproduced via
PRAGMA integrity_check).
Add a cross-process read/write lock (filelock.ReadWriteLock) over the
index:
- read_store() holds it shared for the whole connection lifetime (and
closes the connection on exit); concurrent readers do not block.
- compaction and the migration check run under an exclusive lock that
drains readers, and skip with an info log on Timeout (maintenance op,
retries next run).
- Normal writes are untouched: WAL gives reader/writer concurrency and
LLM_INDEX_LOCK still serializes writers, so they never block readers.
load_or_build_index() now takes the store from the caller's read_store()
so the lock and connection span the whole retrieval; chat holds it across
the streamed response. Two new settings: LLM_INDEX_RWLOCK and
LLM_INDEX_COMPACTION_LOCK_TIMEOUT.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
* Ensures the store alays cleans up SQLite connections for any operations, even on errors
---------
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
stumpylog
Sebastian Steinbeißer
dependabot[bot]andshamoon