Eric Payne created YARN-3905:
--------------------------------

             Summary: Application History Server UI NPEs when accessing apps 
run after RM restart
                 Key: YARN-3905
                 URL: https://issues.apache.org/jira/browse/YARN-3905
             Project: Hadoop YARN
          Issue Type: Bug
          Components: timelineserver
    Affects Versions: 2.7.1, 2.7.0, 2.8.0
            Reporter: Eric Payne
            Assignee: Eric Payne


>From the Application History URL (http://RmHostName:8188/applicationhistory), 
>clicking on the application ID of an app that was run after the RM daemon has 
>been restarted results in a 500 error:
{noformat}
Sorry, got error 500
Please consult RFC 2616 for meanings of the error code.
{noformat}

The stack trace is as follows:
{code}
2015-07-09 20:13:15,584 [2068024519@qtp-769046918-3] INFO 
applicationhistoryservice.FileSystemApplicationHistoryStore: Completed reading 
history information of all application attempts of application 
application_1436472584878_0001
2015-07-09 20:13:15,591 [2068024519@qtp-769046918-3] ERROR webapp.AppBlock: 
Failed to read the AM container of the application attempt 
appattempt_1436472584878_0001_000001.
java.lang.NullPointerException
        at 
org.apache.hadoop.yarn.server.applicationhistoryservice.ApplicationHistoryManagerImpl.convertToContainerReport(ApplicationHistoryManagerImpl.java:206)
        at 
org.apache.hadoop.yarn.server.applicationhistoryservice.ApplicationHistoryManagerImpl.getContainer(ApplicationHistoryManagerImpl.java:199)
        at 
org.apache.hadoop.yarn.server.applicationhistoryservice.ApplicationHistoryClientService.getContainerReport(ApplicationHistoryClientService.java:205)
        at 
org.apache.hadoop.yarn.server.webapp.AppBlock$3.run(AppBlock.java:272)
        at 
org.apache.hadoop.yarn.server.webapp.AppBlock$3.run(AppBlock.java:267)
        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:1666)
        at 
org.apache.hadoop.yarn.server.webapp.AppBlock.generateApplicationTable(AppBlock.java:266)
...
{code}



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