[ http://issues.apache.org/jira/browse/HADOOP-322?page=all ]
Runping Qi updated HADOOP-322:
------------------------------
Attachment: job_control_patch.txt
TestJobControl nows extends junit.framework.TestCase and implements public void
testJobControl() method.
Also some comments are added to explain what is going on.
> 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
> Attachments: job_control_patch.txt
>
> 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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