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https://issues.apache.org/jira/browse/CASSANDRA-1016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12864416#action_12864416
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Stu Hood commented on CASSANDRA-1016:
-------------------------------------

I'm extremely curious about the progress here: are you guys working on this in 
a public branch anywhere?

> Coprocessors
> ------------
>
>                 Key: CASSANDRA-1016
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1016
>             Project: Cassandra
>          Issue Type: New Feature
>            Reporter: Ryan King
>         Attachments: CASSANDRA-1016.patch
>
>
> As discussed at the Digg-hosted hackathon.
> First off, this needs a better name, the idea isn't exactly like coprocessors 
> from BigTable and this entry should be considered a stub for now (Stu and 
> Marius should be able to provide more details).
> The idea is that for mutation operations, we should all the user to run a 
> routine that has access to the "old" version of the data and the "new" 
> version, and can take action.
> At a bare minimum, this should be capable of implementing distributed 
> secondary indexes.

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