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https://issues.apache.org/jira/browse/KAFKA-17474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17879010#comment-17879010
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Matthias J. Sax commented on KAFKA-17474:
-----------------------------------------

Did find 
[https://github.com/apache/kafka/commit/9eb7e1a23d846a3e7feddcf6b734130b688cbb6c]
 – assume it's the root cause. Will dig a little more.

> Flaky tests in GlobalStreamThreadTest
> -------------------------------------
>
>                 Key: KAFKA-17474
>                 URL: https://issues.apache.org/jira/browse/KAFKA-17474
>             Project: Kafka
>          Issue Type: Test
>          Components: streams, unit tests
>            Reporter: Matthias J. Sax
>            Priority: Major
>              Labels: flaky-test
>
> Around Aug/24, multiple tests of GlobalStreamThreadTest started to fail with 
> high failure rate.
>  * 
> [shouldStayDeadAfterTwoCloses()|https://ge.apache.org/scans/tests?search.names=Git%20branch&search.relativeStartTime=P28D&search.rootProjectNames=kafka&search.timeZoneId=Europe%2FVienna&search.values=trunk&tests.container=org.apache.kafka.streams.processor.internals.GlobalStreamThreadTest&tests.sortField=FLAKY&tests.test=shouldStayDeadAfterTwoCloses()]
>  * 
> [shouldCloseStateStoresOnClose()|https://ge.apache.org/scans/tests?search.names=Git%20branch&search.relativeStartTime=P28D&search.rootProjectNames=kafka&search.timeZoneId=Europe%2FVienna&search.values=trunk&tests.container=org.apache.kafka.streams.processor.internals.GlobalStreamThreadTest&tests.sortField=FLAKY&tests.test=shouldCloseStateStoresOnClose()]
>  * 
> [shouldStopRunningWhenClosedByUser()|https://ge.apache.org/scans/tests?search.names=Git%20branch&search.relativeStartTime=P28D&search.rootProjectNames=kafka&search.timeZoneId=Europe%2FVienna&search.values=trunk&tests.container=org.apache.kafka.streams.processor.internals.GlobalStreamThreadTest&tests.sortField=FLAKY&tests.test=shouldStopRunningWhenClosedByUser()]
>  * 
> [shouldBeRunningAfterSuccessfulStart()|https://ge.apache.org/scans/tests?search.names=Git%20branch&search.relativeStartTime=P28D&search.rootProjectNames=kafka&search.timeZoneId=Europe%2FVienna&search.values=trunk&tests.container=org.apache.kafka.streams.processor.internals.GlobalStreamThreadTest&tests.sortField=FLAKY&tests.test=shouldBeRunningAfterSuccessfulStart()]



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