mirror of
https://github.com/facebook/rocksdb.git
synced 2026-10-24 19:59:35 +03:00
c734b7cc60
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/14704 Add an immutable DBOption `reuse_manifest_on_open` (default false). When enabled, `DB::Open` can keep using the recovered MANIFEST for the first post-open metadata update instead of rebuilding a fresh MANIFEST, which can reduce warm-open latency for DBs whose MANIFEST is expensive to regenerate. Reuse is still best-effort. If RocksDB cannot safely resume appending to the recovered MANIFEST, it falls back to the existing fresh-MANIFEST path. The option is also disabled under `best_efforts_recovery`. This diff also teaches the reopened MANIFEST writer to adopt the existing file size before appending, documents the small-`max_manifest_file_size` caveat for the reused path, and keeps the full warm-reopen composition working with `optimize_manifest_for_recovery`. Reviewed By: hx235, pdillinger Differential Revision: D103568447 fbshipit-source-id: f4f5c35ea3ef0b80a0d52d94be40c6bd11505999