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https://issues.apache.org/jira/browse/KAFKA-18418?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ao Li reassigned KAFKA-18418:
-----------------------------

    Assignee: Ao Li

> Flaky test in 
> KafkaStreamsTest::shouldThrowOnCleanupWhileShuttingDownStreamClosedWithCloseOptionLeaveGroupFalse
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-18418
>                 URL: https://issues.apache.org/jira/browse/KAFKA-18418
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Ao Li
>            Assignee: Ao Li
>            Priority: Major
>
> KafkaStreams does not synchronize with CloseThread after shutdown thread 
> starts at line 
> https://github.com/apache/kafka/blob/c1163549081561cade03bbc6a29bfe6caad332a2/streams/src/main/java/org/apache/kafka/streams/KafkaStreams.java#L1571
> So it is possible for the shutdown helper update the state of the 
> KafkaStreams 
> (https://github.com/apache/kafka/blob/c1163549081561cade03bbc6a29bfe6caad332a2/streams/src/main/java/org/apache/kafka/streams/KafkaStreams.java#L1530)
>  before `waitOnState` is called 
> (https://github.com/apache/kafka/blob/c1163549081561cade03bbc6a29bfe6caad332a2/streams/src/main/java/org/apache/kafka/streams/KafkaStreams.java#L1577).
>   
> If this happens, 
> `KafkaStreamsTest::shouldThrowOnCleanupWhileShuttingDownStreamClosedWithCloseOptionLeaveGroupFalse`
>  will fail. 
> Please check code https://github.com/aoli-al/kafka/tree/KAFKA-159, and run 
> `./gradlew :streams:test --tests 
> "org.apache.kafka.streams.KafkaStreamsTest.shouldThrowOnCleanupWhileShuttingDownStreamClosedWithCloseOptionLeaveGroupFalse"`
>  to reproduce the failure.



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