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https://issues.apache.org/jira/browse/HBASE-8258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13624209#comment-13624209
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Andrew Purtell commented on HBASE-8258:
---------------------------------------

bq. We have enough problems with flaky tests, and I'd rather not have to 
consider hadoop code changes shifting under us as another source of bugs.  I'm 
concerned if upgrading breaks us -- this means hadoop broke compatibility.

+1

On the other hand, I see no problem setting up builds on Apache Jenkins or the 
EC2 Jenkins which redefines hadoop.version for the build. THen you can specify 
2.0.4-SNAPSHOT or whatever you like. Call the builds "HBase-2.x-SNAPSHOT" or 
similar. 
                
> Make mapreduce tests pass on hadoop2
> ------------------------------------
>
>                 Key: HBASE-8258
>                 URL: https://issues.apache.org/jira/browse/HBASE-8258
>             Project: HBase
>          Issue Type: Bug
>          Components: mapreduce
>            Reporter: stack
>            Priority: Blocker
>             Fix For: 0.95.1
>
>         Attachments: 8258-plain.txt, 8258-v1-hadoop-2.0.txt, 
> 8258-v2-hadoop-2.0.txt, 8258-v4-hadoop-2.0.txt, hbase-8258-simple.patch
>
>
> HBASE-7904 was a first attempt at making this work but it got lost in the 
> weeds.
> This is a new attempt at making hbase mapreduce jobs run on hadoop2 (w/o 
> breaking mapreduce on hadoop1)

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