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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5420) Support killing of process groups in LinuxTaskController binary
Date Sun, 12 Apr 2009 07:51:15 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12698183#action_12698183

Hemanth Yamijala commented on HADOOP-5420:

bq. Further, in the current code, this parameter is job configurable ...

Sigh. I didn't notice this. In that case, I am not comfortable with this patch. Configuring
a value at two places is inconvenient, but does not violate correctness. However, a per job
value being overridden by a cluster wide configuration just in the case of LinuxTaskController
does not seem right. Further, with the kind of plans mentioned in the comment above (though
I saw nothing in HADOOP-5614 - having the thoughts recorded there will help), I think we should
relook at how this part is designed.

For the short term, it is probably still OK to not have code corrresponding to the SIGKILL
code at all in the task-controller. Then the issue of how to handle SIGKILL can be addressed
as a follow-up preferably after HADOOP-4490 is committed.

> Support killing of process groups in LinuxTaskController binary
> ---------------------------------------------------------------
>                 Key: HADOOP-5420
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5420
>             Project: Hadoop Core
>          Issue Type: Bug
>            Reporter: Sreekanth Ramakrishnan
>            Assignee: Sreekanth Ramakrishnan
>         Attachments: hadoop-5420-1.patch, hadoop-5420.patch
> Support setsid based kill in LinuxTaskController.

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