Damian Guy created KAFKA-5787:
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Summary: StoreChangeLogReader needs to restore partitions that
were added post initialization
Key: KAFKA-5787
URL: https://issues.apache.org/jira/browse/KAFKA-5787
Project: Kafka
Issue Type: Bug
Components: streams
Affects Versions: 0.11.0.1, 1.0.0
Reporter: Damian Guy
Assignee: Damian Guy
Priority: Blocker
Investigation of {{KStreamRepartitionJoinTest}} failures uncovered this bug. If
a task fails during initialization due to a {{LockException}}, its changelog
partitions are not immediately added to the {{StoreChangelogReader}} as the
thread doesn't hold the lock. However {{StoreChangelogReader#restore}} will be
called and it sets the initialized flag. On a subsequent successfull call to
initialize the new tasks the partitions are added to the
{{StoreChangelogReader}}, however as it is already initialized these new
partitions will never be restored. So the task will remain in a non-running
state forever
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