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From "Damian Guy (JIRA)" <j...@apache.org>
Subject [jira] [Created] (KAFKA-5562) Do streams state directory cleanup on a single thread
Date Thu, 06 Jul 2017 09:58:00 GMT
Damian Guy created KAFKA-5562:
---------------------------------

             Summary: Do streams state directory cleanup on a single thread
                 Key: KAFKA-5562
                 URL: https://issues.apache.org/jira/browse/KAFKA-5562
             Project: Kafka
          Issue Type: Bug
            Reporter: Damian Guy
            Assignee: Damian Guy


Currently in streams we clean up old state directories every so often (as defined by {{state.cleanup.delay.ms}}).
However, every StreamThread runs the cleanup, which is both unnecessary and can potentially
lead to race conditions.

It would be better to perform the state cleanup on a single thread and only when the {{KafkaStreams}}
instance is in a running state.



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