[jira] Commented: (HADOOP-4576) Modify pending tasks count in the UI to pending jobs count in the UI

["Sreekanth Ramakrishnan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-4576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12648508#action_12648508 ] 

Sreekanth Ramakrishnan commented on HADOOP-4576:
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Attaching output of ant test-patch:

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     [exec] +1 overall.  
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     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec] 
     [exec]     +1 tests included.  The patch appears to include 3 new or modified tests.
     [exec]
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
     [exec] 
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler warnings.
     [exec] 
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.
     [exec] 
     [exec]     +1 Eclipse classpath. The patch retains Eclipse classpath integrity.
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> 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
>
>
> 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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