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rocksdb/unreleased_history/behavior_changes/ingest_behind_universal.md

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Do not include last level in compaction when `allow_ingest_behind=true` (#11489) Summary: when a DB is configured with `allow_ingest_behind = true`, the last level should be reserved for ingested files and these files should not be included in any compaction. Currently, a major compaction can compact these files to smaller levels. This can cause future files to be rejected for ingest behind (see `ExternalSstFileIngestionJob::CheckLevelForIngestedBehindFile()`). This PR fixes the issue such that files in the last level is not included in any compaction. Pull Request resolved: https://github.com/facebook/rocksdb/pull/11489 Test Plan: * Updated unit test `ExternalSSTFileTest.IngestBehind` to test that last level is not included in manual and auto-compaction. Reviewed By: ajkr Differential Revision: D46455711 Pulled By: cbi42 fbshipit-source-id: 5e2142c2a709ef932ad797897795021c06c4ac8c
1 year ago
When a DB is openend with `allow_ingest_behind=true` (currently only Universal compaction is supported), files in the last level, i.e. the ingested files, will not be included in any compaction. (#11489)