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https://issues.apache.org/jira/browse/YARN-5483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15413844#comment-15413844
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sandflee commented on YARN-5483:
--------------------------------
1, update a new patch to minor fix diamond operator issues
2, in branch-2.7.patch
{code}
finishedContainersSentToAM.putIfAbsent(nodeId,
new ArrayList<>());
{code}
this leads to compile errors about "java.util.ArrayList<java.lang.Object>can't
cast to java.util.List<org.apache.hadoop.yarn.api.records.ContainerStatus>)", I
don;t known why, so removed the related fix.
> Optimize RMAppAttempt#pullJustFinishedContainers
> ------------------------------------------------
>
> Key: YARN-5483
> URL: https://issues.apache.org/jira/browse/YARN-5483
> Project: Hadoop YARN
> Issue Type: Improvement
> Affects Versions: 2.6.0
> Reporter: sandflee
> Assignee: sandflee
> Attachments: YARN-5483-branch-2.6.patch, YARN-5483-branch-2.7.patch,
> YARN-5483.01.patch, YARN-5483.02.patch, YARN-5483.03.patch,
> YARN-5483.04.patch, jprofiler-cpu.png
>
>
> about 1000 app running on cluster, jprofiler found pullJustFinishedContainers
> cost too much cpu.
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