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https://issues.apache.org/jira/browse/KAFKA-8620?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias J. Sax updated KAFKA-8620:
-----------------------------------
Summary: Race condition in StreamThread state change (was: Fix potential
race condition in StreamThread state change)
> Race condition in StreamThread state change
> -------------------------------------------
>
> Key: KAFKA-8620
> URL: https://issues.apache.org/jira/browse/KAFKA-8620
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Reporter: Boyang Chen
> Assignee: Boyang Chen
> Priority: Major
>
> In the call to `StreamThread.addRecordsToTasks` we don't have synchronization
> when we attempt to extract active tasks. If after one long poll in runOnce
> the application state changes to PENDING_SHUTDOWN, there is a potential close
> on TaskManager which erases the active tasks map, thus triggering NPE and
> bringing the thread state to a false shutdown.
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