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From "Sreekanth Ramakrishnan (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-4287) [mapred] jobqueue_details.jsp shows negative count of running and waiting reduces with CapacityTaskScheduler.
Date Fri, 10 Oct 2008 10:33:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-4287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sreekanth Ramakrishnan updated HADOOP-4287:
-------------------------------------------

    Attachment: HADOOP-4287-3.patch

Attaching the latest patch. The patch contains modified test case with following:
- New Test case to check for Failing reduce.
- Test case now waits till all the tasks of the job have reported failures.

One thing to be noted is test case takes nearly _125 seconds_ to complete.

bq.Minor : You shouldn't catch and ignore any exception thrown by RunningJob.runJob(). If
something abnormal happens, let the test-case fail.

The reason why the exception is being caught is because when a Job fails exception is thrown
back from JobClient.runJob. We catch the exception to continue working on the task counts.


> [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
>         Attachments: HADOOP-4287-1.patch, HADOOP-4287-2.patch, HADOOP-4287-3.patch
>
>
> This I observed while running a job that always fails because of reduce failures. Need
to investigate this.

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