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https://issues.apache.org/jira/browse/MAPREDUCE-1194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gera Shegalov updated MAPREDUCE-1194:
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Attachment: MAPREDUCE-1194.rev1.patch
> mapred.reduce.slowstart.completed.maps allows values more than 1.0 and less
> than 0.0
> ------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-1194
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1194
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 0.20.1
> Reporter: Maxim Zizin
> Priority: Minor
> Attachments: MAPREDUCE-1194.rev1.patch
>
>
> When run with value less than 0.0 (e.g. -1.0) works similar to 0.0, but when
> value is more than 1.0 (e.g. 50.0) reducers don't start at all. Is there a
> reason why such values are allowed? I understand that this is clear from the
> description that parameter is fraction but some people may forget and confuse
> it with percents and as result have problems. Why not throw an error in this
> case?
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