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https://issues.apache.org/jira/browse/YARN-2900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14223621#comment-14223621
 ] 

Jonathan Eagles commented on YARN-2900:
---------------------------------------

[~zjshen], please don't jump to any conclusions. This is my setup, which I 
believe is a supported configuration for 2.6.0.

{quote}
yarn.timeline-service.generic-application-history.enabled=false
yarn.timeline-service.generic-application-history.store-class=org.apache.hadoop.yarn.server.applicationhistoryservice.NullApplicationHistoryStore
{quote}

The Tez UI make applicationhistory rest api calls to gather fine details for 
those who have it enabled. In my case where generic history is disabled, it is 
causing massive flooding of log files.

As far as not finding the duplicate JIRA, I was unable to find this issue in 
the search. Try to include details that are searchable (stack track, logs, 
class/file names) so that users are able to find the appropriate issue.

> Application Not Found in AHS throws Internal Server Error with NPE
> ------------------------------------------------------------------
>
>                 Key: YARN-2900
>                 URL: https://issues.apache.org/jira/browse/YARN-2900
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Jonathan Eagles
>            Assignee: Mit Desai
>         Attachments: YARN-2900.patch
>
>
> Caused by: java.lang.NullPointerException
>       at 
> org.apache.hadoop.yarn.server.applicationhistoryservice.ApplicationHistoryManagerImpl.convertToApplicationReport(ApplicationHistoryManagerImpl.java:128)
>       at 
> org.apache.hadoop.yarn.server.applicationhistoryservice.ApplicationHistoryManagerImpl.getApplication(ApplicationHistoryManagerImpl.java:118)
>       at 
> org.apache.hadoop.yarn.server.webapp.WebServices$2.run(WebServices.java:222)
>       at 
> org.apache.hadoop.yarn.server.webapp.WebServices$2.run(WebServices.java:219)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at javax.security.auth.Subject.doAs(Subject.java:415)
>       at 
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1679)
>       at 
> org.apache.hadoop.yarn.server.webapp.WebServices.getApp(WebServices.java:218)
>       ... 59 more



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