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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