Anna Povzner created KAFKA-8002:
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Summary: Replica reassignment to new log dir may not complete if
future and current replicas segment files have different base offsets
Key: KAFKA-8002
URL: https://issues.apache.org/jira/browse/KAFKA-8002
Project: Kafka
Issue Type: Bug
Components: core
Affects Versions: 2.1.1
Reporter: Anna Povzner
Once future replica fetches log end offset, the intended logic is to finish the
move (and rename the future dir to current replica dir, etc). However, the
check in Partition.maybeReplaceCurrentWithFutureReplica compares the whole
LogOffsetMetadata vs. log end offset. The resulting behavior is that the
re-assignment will not finish for topic partitions that were cleaned/ compacted
such that base offset of the last segment is different for the current and
future replica.
The proposed fix is to compare only log end offsets of the current and future
replica.
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