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From "Anubhav Dhoot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11989) Kill command for process group id throws ExitCodeException
Date Wed, 12 Aug 2015 16:25:46 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11989?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14693753#comment-14693753

Anubhav Dhoot commented on HADOOP-11989:

I missed looking at this before. I have the proper fix and unit test case at HADOOP-12317.
Your test case is failing because the "--"  is needed only when using the negative process
id. See the documentation link I posted in that jira. Appreciate your review of the patch
at HADOOP-12317.

> Kill command for process group id throws ExitCodeException
> ----------------------------------------------------------
>                 Key: HADOOP-11989
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11989
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: util
>    Affects Versions: 2.6.0
>         Environment: debian 7
>            Reporter: Chackaravarthy
>            Assignee: Chackaravarthy
>         Attachments: HADOOP-11989.patch
> In the environment where setsid available, kill command is constructed with single dash,
which throws ExitCodeException (improper usage of command) 
> {noformat}
> kill -signal_num -<process_group_id>
> {noformat}
> Encountered this issue due to YARN-3561 
> Kill command need to be constructed with double dash (--) which means "end of command
options" i.e. it tells ssh command not to try to parse what comes after command line options.
It should be constructed as follows :
> {noformat}
> kill -signal_num -- -<process_group_id>
> {noformat}

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