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Posted to common-dev@hadoop.apache.org by "Ravi Gummadi (JIRA)" <ji...@apache.org> on 2009/01/08 15:28:59 UTC

[jira] Updated: (HADOOP-2721) Use job control for tasks (and therefore for pipes and streaming)

     [ https://issues.apache.org/jira/browse/HADOOP-2721?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ravi Gummadi updated HADOOP-2721:
---------------------------------

    Attachment: HADOOP-2721-v9.patch

Attaching the patch HADOOP-2721-v9.patch for trunk.
Please review the patch and provide your comments.

> Use job control for tasks (and therefore for pipes and streaming)
> -----------------------------------------------------------------
>
>                 Key: HADOOP-2721
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2721
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: contrib/streaming, mapred, pipes
>            Reporter: Owen O'Malley
>            Assignee: Ravi Gummadi
>         Attachments: HADOOP-2721-v2.patch, HADOOP-2721-v3.patch, HADOOP-2721-v9.patch, HADOOP-2721.patch, HADOOP-2721.patch, HADOOP-2721.patch
>
>
> We should use the setsid command when the task is launched to create a new session. We should be able to use the setsid program when we launch the bash process to create a new session. That will allow us to kill the entire session with a single signal and remove the need for the ping methods in both TaskTracker.Child and pipes.

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