[jira] [Commented] (YARN-1550) NPE in FairSchedulerAppsBlock#render

["Karthik Kambatla (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-1550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14015439#comment-14015439 ] 

Karthik Kambatla commented on YARN-1550:
----------------------------------------

Actually, I run into the following NPE when running the new test locally. [~adhoot] - can you please take a look, it might be other changes that went in the interim? 

{noformat}
java.lang.NullPointerException: null
	at org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.ClusterMetricsInfo.<init>(ClusterMetricsInfo.java:65)
	at org.apache.hadoop.yarn.server.resourcemanager.webapp.MetricsOverviewTable.render(MetricsOverviewTable.java:58)
	at org.apache.hadoop.yarn.webapp.view.HtmlBlock.render(HtmlBlock.java:66)
	at org.apache.hadoop.yarn.webapp.view.HtmlBlock.renderPartial(HtmlBlock.java:76)
	at org.apache.hadoop.yarn.webapp.View.render(View.java:235)
{noformat}



> 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: 2.2.1
>
>         Attachments: YARN-1550.001.patch, YARN-1550.002.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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