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* test(optimize): pin Lance blob-column compaction failure as a surface guard
Lance compact_files mis-decodes blob-v2 columns under its forced BlobHandling::AllBinary read ("more fields in the schema than provided column indices"), failing even a pristine uniform-V2_2 multi-fragment blob table; reads use descriptor handling and are unaffected.
Guard 10 reproduces this and is self-retiring: it turns red on the Lance bump that fixes the bug, forcing LANCE_SUPPORTS_BLOB_COMPACTION to flip.
* fix(optimize): skip blob-bearing tables instead of crashing compaction
omnigraph optimize aborted the whole sweep when any node/edge table had a Blob property: Lance compact_files cannot decode blob-v2 columns under AllBinary (the column-index error pinned by the surface guard). Skip blob-bearing tables behind a LANCE_SUPPORTS_BLOB_COMPACTION gate and report them via TableOptimizeStats.skipped / SkipReason (surfaced in the CLI and a tracing::warn) instead of erroring, which also isolates the failure so the other tables still compact.
Reads/writes are unaffected; only fragment/space reclamation on blob tables is deferred until the upstream Lance fix. Adds a maintenance.rs regression test (validated red with the column-index symptom before the fix, green after), a concise v0.6.1 release note, and updates docs (maintenance, cli-reference, AGENTS capability matrix, invariants Known Gaps, lance.md audit, constants).
* refactor(optimize): make TableOptimizeStats and SkipReason non_exhaustive
Both are returned result types, never built by callers, so #[non_exhaustive] makes this the last field/variant addition that can break downstream literal construction and keeps future ones non-breaking (review feedback on the public-field addition). The v0.6.1 Compatibility Notes call out the source-level change.
Also drops the now-stale "RED today / GREEN after the fix lands" narration in the optimize_skips_blob_table_and_reports_skip test (historical regression context now that the fix is in this branch), and folds in the expanded v0.6.1 release note.
* chore(release): bump workspace to v0.6.1
Coherent version bump to accompany the v0.6.1 release note: all five crate manifests + path-dependency constraints, Cargo.lock, the AGENTS.md surveyed-version line, and openapi.json info.version move 0.6.0 -> 0.6.1. Matches the established release pattern (#118 landed the v0.6.0 note + bump together) and resolves the Codex/Devin review flag that a v0.6.1 note without a bump leaves CARGO_PKG_VERSION reporting 0.6.0 and mixed package versions.
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Constants & Tunables (cheat sheet)
| Name | Value | Where |
|---|---|---|
MANIFEST_DIR |
__manifest |
db/manifest/layout.rs |
| Commit graph dir | _graph_commits.lance |
db/commit_graph.rs |
| Run registry dir (legacy, removed MR-771) | _graph_runs.lance |
inert post-v0.4.0; reclaimed by MR-770 |
| Run branch prefix (legacy, removed MR-771) | __run__ |
filtered by is_internal_run_branch defense-in-depth |
| Schema apply lock | __schema_apply_lock__ |
db/mod.rs |
| Manifest publisher retry budget | PUBLISHER_RETRY_BUDGET = 5 |
db/manifest/publisher.rs |
| Internal manifest schema version | INTERNAL_MANIFEST_SCHEMA_VERSION = 2 |
db/manifest/migrations.rs |
| Merge stage batch | MERGE_STAGE_BATCH_ROWS = 8192 |
exec/merge.rs |
| Maintenance concurrency | OMNIGRAPH_MAINTENANCE_CONCURRENCY=8 |
db/omnigraph/optimize.rs |
| Lance blob compaction support | LANCE_SUPPORTS_BLOB_COMPACTION = false |
db/omnigraph/optimize.rs |
| Graph index cache size | 8 (LRU) |
runtime_cache.rs |
| Default body limit | 1 MB |
omnigraph-server/lib.rs |
| Ingest body limit | 32 MB |
omnigraph-server/lib.rs |
| Engine embed model | gemini-embedding-2-preview |
omnigraph/embedding.rs |
| Compiler embed model | text-embedding-3-small |
omnigraph-compiler/embedding.rs |
| Embed timeout | 30 000 ms |
both clients |
| Embed retries | 4 |
both clients |
| Embed retry backoff | 200 ms |
both clients |
| LANCE memory pool default | 1 GB (raised in v0.3.0) |
runtime |