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From "Vinod K V (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4287) [mapred] jobqueue_details.jsp shows negative count of running and waiting reduces with CapacityTaskScheduler.
Date Wed, 01 Oct 2008 05:55:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12635949#action_12635949
] 

Vinod K V commented on HADOOP-4287:
-----------------------------------

After running through the logs, I've realized that the negative count on running tasks results
because of TTs that report failed tasks *after* the job is killed due to maximum TIP failures
being hit. A killed job resets its running tasks count to zero, any task failures reported,
after the job is marked as killed, bring down the count to a negative value. Don't know for
sure, but I guess we should not update task-status of jobs that are already marked succeeded/failed/killed.

> [mapred] jobqueue_details.jsp shows negative count of running and waiting reduces with
CapacityTaskScheduler.
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-4287
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4287
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/capacity-sched
>            Reporter: Vinod K V
>            Assignee: Sreekanth Ramakrishnan
>            Priority: Blocker
>
> This I observed while running a job that always fails because of reduce failures. Need
to investigate this.

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