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https://issues.apache.org/jira/browse/YARN-4338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14996194#comment-14996194
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Sunil G commented on YARN-4338:
-------------------------------
Missed to add a point earlier, are you using a custom scheduler here?
> NPE in RegularContainerAllocator.preCheckForNewContainer()
> ----------------------------------------------------------
>
> Key: YARN-4338
> URL: https://issues.apache.org/jira/browse/YARN-4338
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Xinwei Qin
> Priority: Minor
> Attachments: YARN-4338.001.patch
>
>
> The codes in RegularContainerAllocator.preCheckForNewContainer():
> {code}
> if (anyRequest.getNodeLabelExpression()
> .equals(RMNodeLabelsManager.NO_LABEL)) {
> missedNonPartitionedRequestSchedulingOpportunity =
> application
> .addMissedNonPartitionedRequestSchedulingOpportunity(priority);
> }
> {code}
> {code}anyRequest.getNodeLabelExpression(){code}may return null.
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