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https://issues.apache.org/jira/browse/YARN-2766?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Kanter updated YARN-2766:
--------------------------------
    Attachment: YARN-2766.patch

That makes sense.  

I wasn't able to trace the code back to ApplicationHistoryManager, but I did 
find where the lists are created, so I put the sorting calls there.  

> [JDK 8] TestApplicationHistoryClientService fails
> -------------------------------------------------
>
>                 Key: YARN-2766
>                 URL: https://issues.apache.org/jira/browse/YARN-2766
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>    Affects Versions: 2.6.0
>            Reporter: Robert Kanter
>            Assignee: Robert Kanter
>         Attachments: YARN-2766.patch, YARN-2766.patch
>
>
> {{TestApplicationHistoryClientService.testContainers}} and 
> {{TestApplicationHistoryClientService.testApplicationAttempts}} both fail 
> because the test assertions are assuming a returned Collection is in a 
> certain order.  The collection comes from a HashMap, so the order is not 
> guaranteed, plus, according to [this 
> page|http://docs.oracle.com/javase/8/docs/technotes/guides/collections/changes8.html],
>  there are situations where the iteration order of a HashMap will be 
> different between Java 7 and 8.
> We should fix the test code to not assume a specific ordering.



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