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https://issues.apache.org/jira/browse/MAPREDUCE-1758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12865009#action_12865009
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Balaji Rajagopalan commented on MAPREDUCE-1758:
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Iyappan thanks for quick response, I agree with all of your comments, expect 
for 1, I don't see checking in this code will break any existing test cases, 
since these are new methods. I have already refactored the test cases that was 
using the functionality in MRcluster to JTclient. 

Jeff Herriot is a fancy name given to the system testing framework that we have 
developed at yahoo for hadoop mapreduce/hdfs system testing. The herriot lets 
the test cases be run at the system level opposed to unit testing framework 
which is testing the code at module level. Most of the herriot framework code 
for aiding this will be forwarded ported soon right now most of the work 
resides in yahoo internal branch. 

> Building blocks for the  herriot test cases 
> --------------------------------------------
>
>                 Key: MAPREDUCE-1758
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1758
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>            Reporter: Balaji Rajagopalan
>            Assignee: Balaji Rajagopalan
>            Priority: Minor
>         Attachments: bb_patch.txt
>
>
> There is so much commonality in the test cases that we are writing, so it is 
> pertinent to create reusable code. The common methods will be added to 
> herriot framework. 

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