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https://issues.apache.org/jira/browse/YARN-3675?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14556228#comment-14556228
 ] 

Hudson commented on YARN-3675:
------------------------------

FAILURE: Integrated in Hadoop-Hdfs-trunk-Java8 #193 (See 
[https://builds.apache.org/job/Hadoop-Hdfs-trunk-Java8/193/])
YARN-3675. FairScheduler: RM quits when node removal races with 
continuous-scheduling on the same node. (Anubhav Dhoot via kasha) (kasha: rev 
4513761869c732cf2f462763043067ebf8749df7)
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/TestFairScheduler.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FairScheduler.java
* hadoop-yarn-project/CHANGES.txt


> FairScheduler: RM quits when node removal races with continousscheduling on 
> the same node
> -----------------------------------------------------------------------------------------
>
>                 Key: YARN-3675
>                 URL: https://issues.apache.org/jira/browse/YARN-3675
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>            Reporter: Anubhav Dhoot
>            Assignee: Anubhav Dhoot
>            Priority: Critical
>             Fix For: 2.7.1
>
>         Attachments: YARN-3675.001.patch, YARN-3675.002.patch, 
> YARN-3675.003.patch
>
>
> With continuous scheduling, scheduling can be done on a node thats just 
> removed causing errors like below.
> {noformat}
> 12:28:53.782 AM FATAL 
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager
> Error in handling event type APP_ATTEMPT_REMOVED to the scheduler
> java.lang.NullPointerException
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt.unreserve(FSAppAttempt.java:469)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.completedContainer(FairScheduler.java:815)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.removeApplicationAttempt(FairScheduler.java:763)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:1217)
>       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)
> 12:28:53.783 AM        INFO 
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager Exiting, bbye..
> {noformat}



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