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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-5562) Do streams state directory cleanup on a single thread
Date Fri, 11 Aug 2017 15:42:00 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-5562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16123503#comment-16123503
] 

ASF GitHub Bot commented on KAFKA-5562:
---------------------------------------

Github user dguy closed the pull request at:

    https://github.com/apache/kafka/pull/3654


> 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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