PHOENIX-7863 Add replication consistency point guard to compaction#2541
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Himanshu-g81 wants to merge 13 commits into
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PHOENIX-7863 Add replication consistency point guard to compaction#2541Himanshu-g81 wants to merge 13 commits into
Himanshu-g81 wants to merge 13 commits into
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added 13 commits
June 23, 2026 23:47
On standby clusters, compaction can prematurely drop delete markers newer than the replication consistency point, causing permanent stale data. This adds a guard that floors maxLookbackWindowStart to the minimum consistency point across all HA groups when replication replay is enabled. Enabled via phoenix.replication.compaction.guard.enabled (default true), active only when phoenix.replication.replay.enabled is also true. Falls back to retaining all delete markers if the consistency point is unavailable.
Move applyReplicationConsistencyGuard and adjustMaxLookbackWindowStart from CompactionScanner to ReplicationLogReplayService where the consistency point logic belongs. Relocate unit test to replication.reader package accordingly.
Now that the guard logic lives in the same class, public access is no longer needed. Tests are in the same package and can still access it.
Co-locate REPLICATION_COMPACTION_GUARD_ENABLED and its default with the other replication config constants in ReplicationLogReplayService, removing them from QueryServices/QueryServicesOptions.
- Remove incorrect @VisibleForTesting from applyReplicationConsistencyGuard (it is genuinely public, called from CompactionScanner) - Reduce adjustMaxLookbackWindowStart to package-private - Fix newHashMapWithExpectedSize(4) to 5 in both IT classes
- Move guard enforcement from store-level to RowContext.setTTL() to fix TTL window bypass (Math.min cap after Math.max with ttlWindowStart) - Add Guava memoized cache (30s TTL) for consistency point to reduce NameNode RPCs during compaction bursts - Gate guard on major compactions only (no effect during flush/minor) - Make constructor private, replace mock injection with test factory (setConsistencyPointForTesting) - Demote per-compaction logging from INFO to DEBUG - Keep guard config flag for operational flexibility
Verify that resolveConsistencyPoint uses cached value from Guava memoized supplier and does not re-fetch on every call within TTL.
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