Damian Guy created KAFKA-4724:
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Summary: Clean up of state directories has a race condition and
can possibly remove stores that are sill used
Key: KAFKA-4724
URL: https://issues.apache.org/jira/browse/KAFKA-4724
Project: Kafka
Issue Type: Bug
Components: streams
Affects Versions: 0.10.2.0
Reporter: Damian Guy
Fix For: 0.10.3.0
Currently, each {{StreamThread}} cleans up unused state directories based on
the config {{StreamsConfig.STATE_CLEANUP_DELAY_MS_CONFIG}}.
In situations where there are multiple threads configured this can lead to a
race condition where the state directory gets removed by one thread when the
task has been assigned (but not yet taken a lock) to another thread in the
process.
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