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