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https://issues.apache.org/jira/browse/HADOOP-13709?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15746528#comment-15746528
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Jason Lowe commented on HADOOP-13709:
-------------------------------------
+1 lgtm. Committing this.
> Clean up subprocesses spawned by Shell.java:runCommand when the shell process
> exits
> -----------------------------------------------------------------------------------
>
> Key: HADOOP-13709
> URL: https://issues.apache.org/jira/browse/HADOOP-13709
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 2.2.0
> Reporter: Eric Badger
> Assignee: Eric Badger
> Attachments: HADOOP-13709.001.patch, HADOOP-13709.002.patch,
> HADOOP-13709.003.patch, HADOOP-13709.004.patch, HADOOP-13709.005.patch,
> HADOOP-13709.006.patch, HADOOP-13709.007.patch, HADOOP-13709.008.patch,
> HADOOP-13709.009.patch, HADOOP-13709.009.patch
>
>
> The runCommand code in Shell.java can get into a situation where it will
> ignore InterruptedExceptions and refuse to shutdown due to being in I/O
> waiting for the return value of the subprocess that was spawned. We need to
> allow for the subprocess to be interrupted and killed when the shell process
> gets killed. Currently the JVM will shutdown and all of the subprocesses will
> be orphaned and not killed.
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