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https://issues.apache.org/jira/browse/YARN-1550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13858552#comment-13858552
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Sandy Ryza commented on YARN-1550:
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Does anything suspicious show up in the ResourceManager logs?
> the page http:/ip:50030/cluster/scheduler has 500 error fairScheduler
> ----------------------------------------------------------------------
>
> 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
> Priority: Critical
>
> three Step :
> 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！
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