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https://issues.apache.org/jira/browse/YARN-1550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14016408#comment-14016408
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Hudson commented on YARN-1550:
------------------------------
FAILURE: Integrated in Hadoop-Yarn-trunk #572 (See
[https://builds.apache.org/job/Hadoop-Yarn-trunk/572/])
YARN-1550. NPE in FairSchedulerAppsBlock#render. (Anubhav Dhoot via kasha)
(kasha: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1599345)
* /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt
*
/hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/FairSchedulerAppsBlock.java
*
/hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebAppFairScheduler.java
> NPE in FairSchedulerAppsBlock#render
> ------------------------------------
>
> Key: YARN-1550
> URL: https://issues.apache.org/jira/browse/YARN-1550
> Project: Hadoop YARN
> Issue Type: Bug
> Components: scheduler
> Affects Versions: 2.2.0
> Reporter: caolong
> Assignee: Anubhav Dhoot
> Priority: Critical
> Fix For: 2.5.0
>
> Attachments: YARN-1550.001.patch, YARN-1550.002.patch,
> YARN-1550.003.patch, YARN-1550.patch
>
>
> three Steps :
> 1、debug at RMAppManager#submitApplication after code
> if (rmContext.getRMApps().putIfAbsent(applicationId, application) !=
> null) {
> String message = "Application with id " + applicationId
> + " is already present! Cannot add a duplicate!";
> LOG.warn(message);
> throw RPCUtil.getRemoteException(message);
> }
> 2、submit one application:hadoop jar
> ~/hadoop-current/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.0.0-ydh2.2.0-tests.jar
> sleep -Dhadoop.job.ugi=test2,#111111 -Dmapreduce.job.queuename=p1 -m 1 -mt 1
> -r 1
> 3、go in page :http://ip:50030/cluster/scheduler and find 500 ERROR！
> the log:
> {noformat}
> 2013-12-30 11:51:43,795 ERROR org.apache.hadoop.yarn.webapp.Dispatcher: error
> handling URI: /cluster/scheduler
> java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> ....
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.server.resourcemanager.webapp.FairSchedulerAppsBlock.render(FairSchedulerAppsBlock.java:96)
> at
> org.apache.hadoop.yarn.webapp.view.HtmlBlock.render(HtmlBlock.java:66)
> at
> org.apache.hadoop.yarn.webapp.view.HtmlBlock.renderPartial(HtmlBlock.java:76)
> {noformat}
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