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https://issues.apache.org/jira/browse/YARN-2753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14186047#comment-14186047
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zhihai xu commented on YARN-2753:
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[~leftnoteasy], thanks to review the patch, I remove labels == null in the new
patch YARN-2753.001.patch.
> potential NPE in checkRemoveLabelsFromNode of CommonNodeLabelsManager
> ---------------------------------------------------------------------
>
> Key: YARN-2753
> URL: https://issues.apache.org/jira/browse/YARN-2753
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: zhihai xu
> Assignee: zhihai xu
> Attachments: YARN-2753.000.patch, YARN-2753.001.patch
>
>
> potential NPE(NullPointerException) in checkRemoveLabelsFromNode of
> CommonNodeLabelsManager.
> It because when a Node is created, Node.labels can be null.
> In this case, nm.labels; may be null.
> So we need check originalLabels not null before use
> it(originalLabels.containsAll).
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