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https://issues.apache.org/jira/browse/CASSANDRA-3583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13176770#comment-13176770
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Jonathan Ellis commented on CASSANDRA-3583:
-------------------------------------------

Checked with Jake.  The use case he wants to support is rebuilding a corrupt 
index.  So, we *do* want to rip out existing sstables, if any, when starting 
the rebuild.  (Jake envisions this being done on a node that has been taken 
offline temporarily so index queries can continue to be done against other 
nodes.)
                
> Add "rebuild index" JMX command
> -------------------------------
>
>                 Key: CASSANDRA-3583
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3583
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core, Tools
>            Reporter: Jonathan Ellis
>            Assignee: Vijay
>            Priority: Minor
>             Fix For: 1.1
>
>         Attachments: 0001-3583.patch
>
>
> CASSANDRA-1740 allows aborting an index build, but there is no way to 
> re-attempt the build without restarting the server.
> We've also had requests to allow rebuilding an index that *has* been built, 
> so it would be nice to kill two birds with one stone here.

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