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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

The patch creates a consistent ordering by sorting the Collection before the 
assert statements.  There was similar code in {{testApplications}} so I sorted 
there as well just in case.

> [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
>
>
> {{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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