[jira] [Updated] (YARN-4994) Use MiniYARNCluster with try-with-resources in tests

["Andras Bokor (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-4994?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andras Bokor updated YARN-4994:
-------------------------------
    Description: 
In tests MiniYARNCluster is used with the following pattern:
In try-catch block create a MiniYARNCluster instance and in finally block close it.
[try-with-resources|https://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html] is preferred from Java7 instead of the pattern above.

  was:
{{MiniYARNCluster}} should implement {{AutoCloseable}} in order to support [try-with-resources|https://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html]. It will make test code a little cleaner and more reliable.

Since {{AutoCloseable}} is only in Java 1.7 or later, this can not be backported to Hadoop version prior to 2.7.


> Use MiniYARNCluster with try-with-resources in tests
> ----------------------------------------------------
>
>                 Key: YARN-4994
>                 URL: https://issues.apache.org/jira/browse/YARN-4994
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: test
>    Affects Versions: 2.7.0
>            Reporter: Andras Bokor
>            Priority: Trivial
>             Fix For: 2.7.0
>
>
> In tests MiniYARNCluster is used with the following pattern:
> In try-catch block create a MiniYARNCluster instance and in finally block close it.
> [try-with-resources|https://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html] is preferred from Java7 instead of the pattern above.



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