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Posted to yarn-issues@hadoop.apache.org by "Jian He (JIRA)" <ji...@apache.org> on 2014/11/06 22:38:33 UTC
[jira] [Commented] (YARN-2822) NPE when RM tries to transfer state
from previous attempt on recovery
[ https://issues.apache.org/jira/browse/YARN-2822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14200977#comment-14200977 ]
Jian He commented on YARN-2822:
-------------------------------
The problem is on recovery, if the previous attempt already finished, we are not adding it the scheduler. when scheduler tries to transferStateFromPreviousAttempt for work-presrving AM restart, it throws NPE.
> NPE when RM tries to transfer state from previous attempt on recovery
> ---------------------------------------------------------------------
>
> Key: YARN-2822
> URL: https://issues.apache.org/jira/browse/YARN-2822
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: Jian He
> Assignee: Jian He
>
> {code}
> 2014-09-16 01:36:28,037 FATAL resourcemanager.ResourceManager (ResourceManager.java:run(612)) - Error in handling event type APP_ATTEMPT_ADDED to the scheduler
> java.lang.NullPointerException
> at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApplicationAttempt.transferStateFromPreviousAttempt(SchedulerApplicationAttempt.java:530)
> at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.addApplicationAttempt(CapacityScheduler.java:678)
> at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:1015)
> at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:98)
> at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:603)
> at java.lang.Thread.run(Thread.java:744)
> {code}
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