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https://issues.apache.org/jira/browse/YARN-9714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16919282#comment-16919282
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Hudson commented on YARN-9714:
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FAILURE: Integrated in Jenkins build Hadoop-trunk-Commit #17203 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/17203/])
YARN-9714. ZooKeeper connection in ZKRMStateStore leaks after RM
(rohithsharmaks: rev 5b557de721fa1587a7d0e197ea6b7120b53e8717)
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestZKRMStateStore.java
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/ZKRMStateStore.java
> ZooKeeper connection in ZKRMStateStore leaks after RM transitioned to standby
> -----------------------------------------------------------------------------
>
> Key: YARN-9714
> URL: https://issues.apache.org/jira/browse/YARN-9714
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Reporter: Tao Yang
> Assignee: Tao Yang
> Priority: Major
> Labels: memory-leak
> Fix For: 3.3.0, 3.2.1
>
> Attachments: YARN-9714.001.patch, YARN-9714.002.patch,
> YARN-9714.003.patch, YARN-9714.004.patch, YARN-9714.005.patch
>
>
> Recently RM full GC happened in one of our clusters, after investigating the
> dump memory and jstack, I found two places in RM may cause memory leaks after
> RM transitioned to standby:
> # Release cache cleanup timer in AbstractYarnScheduler never be canceled.
> # ZooKeeper connection in ZKRMStateStore never be closed.
> To solve those leaks, we should close the connection or cancel the timer when
> services are stopping.
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