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Date: Wed, 28 Jun 2006 20:05:31 +0000 (GMT+00:00)
From: "Runping Qi (JIRA)" <jira@apache.org>
To: hadoop-dev@lucene.apache.org
Subject: [jira] Updated: (HADOOP-322) Need a job control utility to submit
 and monitor a group of jobs which have DAG dependency
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     [ http://issues.apache.org/jira/browse/HADOOP-322?page=all ]

Runping Qi updated HADOOP-322:
------------------------------

    Attachment:     (was: job_control_patch.txt)

> Need a job control utility to submit and monitor a group of jobs which have DAG dependency
> ------------------------------------------------------------------------------------------
>
>          Key: HADOOP-322
>          URL: http://issues.apache.org/jira/browse/HADOOP-322
>      Project: Hadoop
>         Type: New Feature

>     Reporter: Runping Qi
>     Assignee: Runping Qi

>
> In my applications, some jobs depend on the outputs of other jobs. Therefore, job dependency forms a DAG. A job is ready to run if and only if it does not have any dependency or all the jobs it depends are finished successfully. To help schedule and monitor a group of jobs like that, I am thinking of implementing a utility that:
> 	- accept jobs with dependency specification
>       - monitor job status
>       - submit jobs when they are ready
> With such a utility, the application can construct its jobs, specify their dependency and then hand the jobs to the utility class. The utility takes care of the details of job submission.
> I'll post my design skech for comments/suggestion.
> Eventually, I'll submit a patch for the utility.

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