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https://issues.apache.org/jira/browse/MAPREDUCE-4346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13402477#comment-13402477
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Arun C Murthy commented on MAPREDUCE-4346:
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bq. As I highlighted in the ticket description above: The JobClient only
exposes a getAllJobs() which returns all submitted jobs in any state, the
result also includes all retired jobs. This list is long and represents an
unneeded overhead especially in the case of clients only interested in jobs in
specific states.
Ahmed I'm not convinced. Yes, it's bit more overhead, but I don't see how
adding a new public api is going to make significant difference. IAC, if you
set completed jobs to 0, you'll not get retired jobs. Unless I hear a more
compelling argument I'm -1 on this. Also, please remember that this API is
fairly hard to support with YARN, so that is another problem.
> Adding a refined version of JobTracker.getAllJobs() and exposing through the
> JobClient
> --------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4346
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4346
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv1
> Reporter: Ahmed Radwan
> Assignee: Ahmed Radwan
> Attachments: MAPREDUCE-4346.patch, MAPREDUCE-4346_rev2.patch,
> MAPREDUCE-4346_rev3.patch, MAPREDUCE-4346_rev4.patch
>
>
> The current implementation for JobTracker.getAllJobs() returns all submitted
> jobs in any state, in addition to retired jobs. This list can be long and
> represents an unneeded overhead especially in the case of clients only
> interested in jobs in specific state(s).
> It is beneficial to include a refined version where only jobs having specific
> statuses are returned and retired jobs are optional to include.
> I'll be uploading an initial patch momentarily.
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