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https://issues.apache.org/jira/browse/YARN-5371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15374755#comment-15374755
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sandflee commented on YARN-5371:
--------------------------------
node available resource changes while sorting node. we could do a deep copy of
node or add -Djava.util.Arrays.useLegacyMergeSort=true to YARN_OPS to use
mergeSort not TimSort for Collection#sort, thought?
> FairScheduer ContinuousScheduling thread throws Exception
> ---------------------------------------------------------
>
> Key: YARN-5371
> URL: https://issues.apache.org/jira/browse/YARN-5371
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 2.7.2
> Reporter: sandflee
> Assignee: sandflee
>
> {noformat}
> java.lang.IllegalArgumentException: Comparison method violates its general
> contract!
> at java.util.TimSort.mergeLo(TimSort.java:777)
> at java.util.TimSort.mergeAt(TimSort.java:514)
> at java.util.TimSort.mergeCollapse(TimSort.java:441)
> at java.util.TimSort.sort(TimSort.java:245)
> at java.util.Arrays.sort(Arrays.java:1512)
> at java.util.ArrayList.sort(ArrayList.java:1454)
> at java.util.Collections.sort(Collections.java:175)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.continuousSchedulingAttempt(FairScheduler.java:1002)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler$ContinuousSchedulingThread.run(FairScheduler.java:285)
> {noformat}
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