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https://issues.apache.org/jira/browse/HADOOP-2484?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12585053#action_12585053
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Amar Kamat commented on HADOOP-2484:
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There should be some way to pass a *DAG* like structure. Look at the DAG node
as a configuration. So each node will represent a conf file. Users can generate
conf files, arrange then in a DAG and pass it to the {{JobControl}}. User
should specify just the input folder(s) and the output folder(s) and JC should
generate/manage in-between output folders. The users can provide hints if the
intermediate job outputs are desired or not. Also some level of fault-tolerance
feature should be provided so that in case of some failures the _meta_ job
should complete.
> Improve facilities for job-control, job-queues etc.
> ---------------------------------------------------
>
> Key: HADOOP-2484
> URL: https://issues.apache.org/jira/browse/HADOOP-2484
> Project: Hadoop Core
> Issue Type: New Feature
> Components: mapred
> Reporter: Arun C Murthy
>
> Today, Map-Reduce has _some_ support for job-control - basically JobClient
> provides a facility to monitor jobs, one can setup a job-ending notification
> and there is {{JobControl}}.
> Links:
> http://lucene.apache.org/hadoop/docs/r0.15.1/mapred_tutorial.html#Job+Control
> http://lucene.apache.org/hadoop/docs/r0.15.1/mapred_tutorial.html#JobControl
> Looks like users could do more with better facilities for job-control and
> maybe more advanced features like job-queues etc.
> Lets discuss...
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