Dhruvil Shah created KAFKA-7076:
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Summary: Broker startup could be inefficient when using old
message format
Key: KAFKA-7076
URL: https://issues.apache.org/jira/browse/KAFKA-7076
Project: Kafka
Issue Type: Bug
Reporter: Dhruvil Shah
Assignee: Dhruvil Shah
During broker startup, we call `Log#recoverSegment` when we find corrupted
indexes, for segments beyond the last check-pointed recovery point, and for any
".swap" segments created by log cleaner. One of the things
`Log#recoverSegments` does is to build up the producer state, starting from any
previous snapshot file that is available. For logs using message formats older
than V2, we could skip building up this producer state which would essentially
speed up recovery.
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