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Posted to yarn-issues@hadoop.apache.org by "Tao Yang (JIRA)" <ji...@apache.org> on 2019/07/30 11:07:00 UTC
[jira] [Commented] (YARN-9714) Memory leaks after RM transitioned
to standby
[ https://issues.apache.org/jira/browse/YARN-9714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16896007#comment-16896007 ]
Tao Yang commented on YARN-9714:
--------------------------------
Attached v1 patch for review. cc: [~cheersyang], [~sunil.g], [~leftnoteasy]
> Memory 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: Blocker
> Attachments: YARN-9714.001.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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