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https://issues.apache.org/jira/browse/ACCUMULO-212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13647937#comment-13647937
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Adam Fuchs commented on ACCUMULO-212:
-------------------------------------

I agree with Keith -- the concept of "coprocessors" has been defined in many 
ways by different groups. HBase coprocessors don't really look much like 
Bigtable coprocessors, which are not really well defined in the literature 
anyway. The thing that we really need in Accumulo is a mechanism that safely do 
triggered operations outside of "the current row" without introducing the 
possibility of a deadlock. Hooks don't count as "coprocessors" IMO.
                
> Add coprocessors to Accumulo
> ----------------------------
>
>                 Key: ACCUMULO-212
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-212
>             Project: Accumulo
>          Issue Type: Improvement
>            Reporter: David M. Lyle
>            Priority: Minor
>
> Investigate adding coprocessor support to Accumulo. 

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