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Posted to yarn-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2014/08/11 00:36:12 UTC
[jira] [Commented] (YARN-2308) NPE happened when RM restart after
CapacityScheduler queue configuration changed
[ https://issues.apache.org/jira/browse/YARN-2308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14092245#comment-14092245 ]
Hadoop QA commented on YARN-2308:
---------------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12660878/jira2308.patch
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author tags.
{color:green}+1 tests included{color}. The patch appears to include 1 new or modified test files.
{color:green}+1 javac{color}. The applied patch does not increase the total number of javac compiler warnings.
{color:green}+1 javadoc{color}. There were no new javadoc warning messages.
{color:green}+1 eclipse:eclipse{color}. The patch built with eclipse:eclipse.
{color:green}+1 findbugs{color}. The patch does not introduce any new Findbugs (version 2.0.3) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase the total number of release audit warnings.
{color:green}+1 core tests{color}. The patch passed unit tests in hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager.
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results: https://builds.apache.org/job/PreCommit-YARN-Build/4581//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/4581//console
This message is automatically generated.
> NPE happened when RM restart after CapacityScheduler queue configuration changed
> ---------------------------------------------------------------------------------
>
> Key: YARN-2308
> URL: https://issues.apache.org/jira/browse/YARN-2308
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager, scheduler
> Affects Versions: 2.6.0
> Reporter: Wangda Tan
> Assignee: chang li
> Priority: Critical
> Attachments: jira2308.patch
>
>
> I encountered a NPE when RM restart
> {code}
> 2014-07-16 07:22:46,957 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in handling event type APP_ATTEMPT_ADDED to the scheduler
> java.lang.NullPointerException
> at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.addApplicationAttempt(CapacityScheduler.java:566)
> at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:922)
> 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:594)
> at org.apache.hadoop.yarn.state.StateMachineFactory.access$300(StateMachineFactory.java:46)
> at org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine.doTransition(StateMachineFactory.java:448)
> at org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppImpl.handle(RMAppImpl.java:654)
> at org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppImpl.handle(RMAppImpl.java:85)
> at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$ApplicationEventDispatcher.handle(ResourceManager.java:698)
> at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$ApplicationEventDispatcher.handle(ResourceManager.java:682)
> at org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:173)
> at org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:106)
> at java.lang.Thread.run(Thread.java:744)
> {code}
> And RM will be failed to restart.
> This is caused by queue configuration changed, I removed some queues and added new queues. So when RM restarts, it tries to recover history applications, and when any of queues of these applications removed, NPE will be raised.
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