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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4235) FairScheduler PrimaryGroup does not handle empty groups returned for a user
Date Fri, 09 Oct 2015 06:14:26 GMT

    [ https://issues.apache.org/jira/browse/YARN-4235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14949949#comment-14949949
] 

Hudson commented on YARN-4235:
------------------------------

FAILURE: Integrated in Hadoop-Yarn-trunk-Java8 #513 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk-Java8/513/])
YARN-4235. FairScheduler PrimaryGroup does not handle empty groups (rohithsharmaks: rev 8f195387a4a4a5a278119bf4c2f15cad61f0e2c7)
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/TestQueuePlacementPolicy.java
* hadoop-yarn-project/CHANGES.txt
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/QueuePlacementRule.java


> FairScheduler PrimaryGroup does not handle empty groups returned for a user 
> ----------------------------------------------------------------------------
>
>                 Key: YARN-4235
>                 URL: https://issues.apache.org/jira/browse/YARN-4235
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>            Reporter: Anubhav Dhoot
>            Assignee: Anubhav Dhoot
>             Fix For: 2.8.0
>
>         Attachments: YARN-4235.001.patch
>
>
> We see NPE if empty groups are returned for a user. This causes a NPE and cause RM to
crash as below
> {noformat}
> 2015-09-22 16:51:52,780  FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager:
Error in handling event type APP_ADDED to the scheduler
> java.lang.IndexOutOfBoundsException: Index: 0
> 	at java.util.Collections$EmptyList.get(Collections.java:3212)
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.QueuePlacementRule$PrimaryGroup.getQueueForApp(QueuePlacementRule.java:149)
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.QueuePlacementRule.assignAppToQueue(QueuePlacementRule.java:74)
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.QueuePlacementPolicy.assignAppToQueue(QueuePlacementPolicy.java:167)
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.assignToQueue(FairScheduler.java:689)
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.addApplication(FairScheduler.java:595)
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:1180)
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:111)
> 	at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:684)
> 	at java.lang.Thread.run(Thread.java:745)
> 2015-09-22 16:51:52,797  INFO org.apache.hadoop.yarn.server.resourcemanager.ResourceManager:
Exiting, bbye..
> {noformat}



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