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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3143) RM Apps REST API can return NPE or entries missing id and other fields
Date Sun, 08 Feb 2015 20:30:44 GMT

    [ https://issues.apache.org/jira/browse/YARN-3143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14311546#comment-14311546
] 

Hudson commented on YARN-3143:
------------------------------

SUCCESS: Integrated in Hadoop-Hdfs-trunk #2030 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/2030/])


> RM Apps REST API can return NPE or entries missing id and other fields
> ----------------------------------------------------------------------
>
>                 Key: YARN-3143
>                 URL: https://issues.apache.org/jira/browse/YARN-3143
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: webapp
>    Affects Versions: 2.5.2
>            Reporter: Kendall Thrapp
>            Assignee: Jason Lowe
>             Fix For: 2.7.0
>
>         Attachments: YARN-3143.001.patch
>
>
> I'm seeing intermittent null pointer exceptions being returned by
> the YARN Apps REST API.
> For example:
> {code}
> http://{cluster}:{port}/ws/v1/cluster/apps?finalStatus=UNDEFINED
> {code}
> JSON Response was:
> {code}
> {"RemoteException":{"exception":"NullPointerException","javaClassName":"java.lang.NullPointerException"}}
> {code}
> At a glance appears to be only when we query for unfinished apps (i.e. finalStatus=UNDEFINED).
 
> Possibly related, when I do get back a list of apps, sometimes one or more of the apps
will be missing most of the fields, like id, name, user, etc., and the fields that are present
all have zero for the value.  
> For example:
> {code}
> {"progress":0.0,"clusterId":0,"applicationTags":"","startedTime":0,"finishedTime":0,"elapsedTime":0,"allocatedMB":0,"allocatedVCores":0,"runningContainers":0,"preemptedResourceMB":0,"preemptedResourceVCores":0,"numNonAMContainerPreempted":0,"numAMContainerPreempted":0}
> {code}
> Let me know if there's any other information I can provide to help debug.



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