kamalcph commented on code in PR #14652:
URL: https://github.com/apache/kafka/pull/14652#discussion_r1398649893
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core/src/main/java/kafka/server/ReplicaFetcherTierStateMachine.java:
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@@ -238,12 +238,8 @@ private Long buildRemoteLogAuxState(TopicPartition
topicPartition,
log.debug("Updated the epoch cache from remote tier till
offset: {} with size: {} for {}", leaderLocalLogStartOffset, epochs.size(),
partition);
- // Restore producer snapshot
- File snapshotFile =
LogFileUtils.producerSnapshotFile(unifiedLog.dir(), nextOffset);
- buildProducerSnapshotFile(snapshotFile,
remoteLogSegmentMetadata, rlm);
-
// Reload producer snapshots.
-
unifiedLog.producerStateManager().truncateFullyAndReloadSnapshots();
+ truncateFullyAndReloadRestoredSnapshots(unifiedLog,
nextOffset, remoteLogSegmentMetadata, rlm);
Review Comment:
@hudeqi
> In producerStateManager, first call truncateFullyAndStartAt to clean up
the snapshot files, and then pull the snapshot file from RemoteLogManager. If
the order of calls is reversed in original logic, it may cause the newly built
snapshot file to be cleaned up again by truncateFullyAndStartAt.
The `truncateFullyAndReloadSnapshots` only removes the snapshot files that
was already loaded into the ProducerStateManager, so it doesn't remove the
`snapshotFile` that was downloaded/built from the remote storage.
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