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https://issues.apache.org/jira/browse/HADOOP-4576?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sreekanth Ramakrishnan updated HADOOP-4576:
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Attachment: HADOOP-4576-2.patch
Attaching new patch, this patch does not iterate thro' job list to find count
of waiting jobs,instead introduces a counter in the QueueInfo object in
JobQueueManager to maintain a count of waiting jobs which is incremented and
decremented (by JobInitializationPoller). This would mean that in
[HADOOP-4445|https://issues.apache.org/jira/browse/HADOOP-4445] we just need to
iterate thro' running jobs queue to find number of running tasks for that queue.
> Modify pending tasks count in the UI to pending jobs count in the UI
> --------------------------------------------------------------------
>
> Key: HADOOP-4576
> URL: https://issues.apache.org/jira/browse/HADOOP-4576
> Project: Hadoop Core
> Issue Type: Bug
> Components: contrib/capacity-sched
> Affects Versions: 0.19.0
> Reporter: Hemanth Yamijala
> Assignee: Sreekanth Ramakrishnan
> Attachments: HADOOP-4576-1.patch, HADOOP-4576-2.patch
>
>
> The UI for capacity scheduler displays 'pending tasks' counts. However the
> capacity scheduler does not update these counts to be the actual values for
> optimization purposes, for e.g. to avoid walking all pending jobs on all
> heartbeats. Hence this information is not very accurate.
> Also, while 'running tasks' counts are useful to compare against capacities
> and limits, 'pending tasks' counts do not add too much user value. A better
> count to display would be the number of running and pending jobs.
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