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https://issues.apache.org/jira/browse/YARN-1754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13910012#comment-13910012
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Josh Elser commented on YARN-1754:
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This is expected as OSX does not contain a {{setsid}} binary. If you make sure
a binary available, you should see containers freed on OSX.
Also see: YARN-76
> Container process is not really killed
> --------------------------------------
>
> Key: YARN-1754
> URL: https://issues.apache.org/jira/browse/YARN-1754
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Affects Versions: 2.2.0
> Environment: Mac
> Reporter: Jeff Zhang
>
> I test the following distributed shell example on my mac:
> hadoop jar
> share/hadoop/yarn/hadoop-yarn-applications-distributedshell-2.2.0.jar
> -appname shell -jar
> share/hadoop/yarn/hadoop-yarn-applications-distributedshell-2.2.0.jar
> -shell_command=sleep -shell_args=1000000000 -num_containers=1
> And it will start 2 process for one container, one is the shell process,
> another is the real command I execute ( here is "sleep 1000000000").
> And then I kill this application by running command "yarn application -kill
> app_id"
> it will kill the shell process, but won't kill the real command process. The
> reason is that yarn use kill command to kill process, but it won't kill its
> child process. use pkill could resolve this issue.
> IMHO, it is a very important case which will make the resource usage
> inconsistency, and have potential security problem.
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