Jason Gustafson created KAFKA-5435:
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Summary: Produce state lost if no snapshot retained
Key: KAFKA-5435
URL: https://issues.apache.org/jira/browse/KAFKA-5435
Project: Kafka
Issue Type: Sub-task
Reporter: Jason Gustafson
Assignee: Jason Gustafson
Priority: Blocker
Fix For: 0.11.0.0
We have an optimization in {{Log}} to avoid the need to scan the log to build
producer state during the upgrade path. Basically, if no producer snapshot
exists, then we assume that it's an upgrade and take a new snapshot from the
end of the log. Unfortunately, it can happen that snapshot files are never
created or are deleted through truncation. Upon reinitialization, this can
cause the optimization above to kick in and we lose the current state of all
producers.
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