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https://issues.apache.org/jira/browse/YARN-4959?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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John Zhuge resolved YARN-4959.
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Resolution: Not A Problem
Fix Version/s: 2.7.0
Already supported because:
* {{MiniYARNCluster}} inherits from {{CompositeService}} => {{AbstractService}}
=> {{Service}} => {{Closeable}} => {{AutoCloseable}}.
* {{AbstractService.close}} calls {{stop}} which calls {{serviceStop}}.
* {{MiniYARNCluster}} performs cleanup in its overridden {{serviceStop}}
Thanks, [~boky01], for point it out in a comment for HDFS-10287.
> MiniYARNCluster should implement AutoCloseable
> ----------------------------------------------
>
> Key: YARN-4959
> URL: https://issues.apache.org/jira/browse/YARN-4959
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: test
> Affects Versions: 2.7.0
> Reporter: John Zhuge
> Priority: Trivial
> Fix For: 2.7.0
>
>
> {{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.
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