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https://issues.apache.org/jira/browse/KAFKA-4510?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15730369#comment-15730369
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ASF GitHub Bot commented on KAFKA-4510:
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GitHub user mjsax opened a pull request:
https://github.com/apache/kafka/pull/2227
KAFKA-4510: StreamThread must finish rebalance in state PENDING_SHUTDOWN
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/mjsax/kafka
kafka-4510-finish-rebalance-on-shutdown
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/2227.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2227
----
commit 1568713abe7bd95495f673d507f96812484efcc8
Author: Matthias J. Sax <matth...@confluent.io>
Date: 2016-12-07T23:55:36Z
KAFKA-4510: StreamThread must finish rebalance in state PENDING_SHUTDOWN
----
> StreamThread must finish rebalance in state PENDING_SHUTDOWN
> ------------------------------------------------------------
>
> Key: KAFKA-4510
> URL: https://issues.apache.org/jira/browse/KAFKA-4510
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Reporter: Matthias J. Sax
> Assignee: Matthias J. Sax
>
> If a Streams application runs with multiple threads within one JVM and the
> application gets stopped. this can triggers a rebalance when the first
> threads finishes processing because not all thread shut down at the same time.
> Because we try to reuse tasks, on rebalance task are not closed immediately
> in order for a potential reuse (if a task gets assigned the its original
> thread). However, if a thread is in state {{PENDING_SHUTDOWN}} it does finish
> the rebalance operation completely and thus does not release the suspended
> task and the application exits with not all locks released.
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