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https://issues.apache.org/jira/browse/HADOOP-13709?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Badger updated HADOOP-13709:
---------------------------------
Attachment: HADOOP-13709.002.patch
Attaching new patch that uses a shutdown hook to kill the child process that
was spawned by shell. I tested this on a local cluster on the localizer use
case from YARN-5641. I replaced the {{untar}} process with a {{sleep 1000000}}
process and confirmed that the {{sleep}} was killed immediately after the
localizer. Before this patch, the localizer would shutdown without killing the
{{sleep}} process.
[~jlowe], [~daryn], please review
> 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: Bug
> Affects Versions: 2.2.0
> Reporter: Eric Badger
> Assignee: Eric Badger
> Attachments: HADOOP-13709.001.patch, HADOOP-13709.002.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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