[HADOOP-322] Need a job control utility to submit and monitor a group of jobs which have DAG dependency

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.5.0
• Fix Version/s: 0.6.0
• Assignee: Runping Qi
• Reporter: Runping Qi
• Created: 24/Jun/06 12:15
• Updated: 08/Sep/06 21:19
• Resolved: 15/Aug/06 21:54

Description

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.