[jira] [Resolved] (KAFKA-6383) StreamThread.shutdown doesn't clean up completely when called before StreamThread.start

["Guozhang Wang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-6383?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Guozhang Wang resolved KAFKA-6383.
----------------------------------
       Resolution: Fixed
    Fix Version/s: 1.1.0

> StreamThread.shutdown doesn't clean up completely when called before StreamThread.start
> ---------------------------------------------------------------------------------------
>
>                 Key: KAFKA-6383
>                 URL: https://issues.apache.org/jira/browse/KAFKA-6383
>             Project: Kafka
>          Issue Type: Bug
>          Components: streams
>    Affects Versions: 1.0.0
>            Reporter: Rohan Desai
>            Assignee: Rohan Desai
>             Fix For: 1.1.0
>
>
> The following code leaks a producer network thread:
> {code}
> ks = new KafkaStreams(...);
> ks.close();
> {code}
> The underlying issue is that KafkaStreams creates a bunch of StreamsThreads via StreamThread.create, which in turn creates a bunch of stuff (including a producer). These resources are cleaned up only when the thread exits. So if the thread was never started, then they are never cleaned up. StreamThread.shutdown should clean up if it sees that the thread has never been started.



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