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https://issues.apache.org/jira/browse/YARN-6188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15866380#comment-15866380
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Hadoop QA commented on YARN-6188:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m
0s{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 7s{color}
| {color:red} YARN-6188 does not apply to trunk. Rebase required? Wrong Branch?
See https://wiki.apache.org/hadoop/HowToContribute for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Issue | YARN-6188 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12852629/YARN-6188.001.patch |
| Console output |
https://builds.apache.org/job/PreCommit-YARN-Build/14938/console |
| Powered by | Apache Yetus 0.5.0-SNAPSHOT http://yetus.apache.org |
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> Fix OOM issue with decommissioningNodesWatcher in the case of clusters with
> large number of nodes
> -------------------------------------------------------------------------------------------------
>
> Key: YARN-6188
> URL: https://issues.apache.org/jira/browse/YARN-6188
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 2.9.0
> Reporter: Ajay Jadhav
> Fix For: 2.9.0, 3.0.0-alpha1
>
> Attachments: YARN-6188.001.patch
>
>
> LogDecommissioningNodesStatus method in DecommissioningNodesWatcher uses
> StringBuilder to append status of all
> decommissioning nodes for logging purpose.
> In the case of large number of decommissioning nodes, this leads to OOM
> exception. The fix scopes StringBuilder so that in case of memory pressure,
> GC can kick in and free up the memory.
> This is supposed to fix a bug introduced in
> https://issues.apache.org/jira/browse/YARN-4676
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