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https://issues.apache.org/jira/browse/MAPREDUCE-1194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14078285#comment-14078285
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Hadoop QA commented on MAPREDUCE-1194:
--------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest 
attachment 
  
http://issues.apache.org/jira/secure/attachment/12546601/MAPREDUCE-1194.rev1.patch
  against trunk revision .

    {color:red}-1 patch{color}.  The patch command could not apply the patch.

Console output: 
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4774//console

This message is automatically generated.

> 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
>              Labels: newbie
>         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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