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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-1514) Progress reporting not handled for the case where a reducer currently doesn't have anything to fetch
Date Mon, 25 Jun 2007 12:29:26 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-1514?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Devaraj Das updated HADOOP-1514:
--------------------------------

    Description: In some apps (like the randomwriter), the maps take a long time to complete,
and there could be cases where a reducer would just be waiting for map(s) to complete. During
that time progress reporting is not done.  (was: For the randomwriter run, the maps actually
don't generate any output, and the reducer is just waiting for the maps to complete. During
that time, progress reporting is not done and hence the process gets killed. Also the case
of empty map outputs needs to be handled more generally.)
        Summary: Progress reporting not handled for the case where a reducer currently doesn't
have anything to fetch  (was: Progress reporting not handled for the case of empty map outputs)

> Progress reporting not handled for the case where a reducer currently doesn't have anything
to fetch
> ----------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-1514
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1514
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.14.0
>            Reporter: Devaraj Das
>            Assignee: Vivek Ratan
>            Priority: Blocker
>             Fix For: 0.14.0
>
>
> In some apps (like the randomwriter), the maps take a long time to complete, and there
could be cases where a reducer would just be waiting for map(s) to complete. During that time
progress reporting is not done.

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