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https://issues.apache.org/jira/browse/HBASE-3135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14565389#comment-14565389
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Enis Soztutar commented on HBASE-3135:
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Looks good for branch-1. I am not sure whether people extend these MR classes. 
if so, that may break binary compat for 1.0.x and 1.1.x, but not sure. 

> Make our MR jobs implement Tool and use ToolRunner so can do -D trickery, etc.
> ------------------------------------------------------------------------------
>
>                 Key: HBASE-3135
>                 URL: https://issues.apache.org/jira/browse/HBASE-3135
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: stack
>            Assignee: Talat UYARER
>             Fix For: 2.0.0
>
>         Attachments: HBASE-3135.patch
>
>
> Our TIF can take a bunch of config.  If our MR jobs -- rowcounter, export, 
> import, etc. -- all implemented Tool/ToolRunner, then we'd pick up the Tool 
> cmdline parse of -D that sets config.  Small change.  Lots of utility.



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