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https://issues.apache.org/jira/browse/CASSANDRA-749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12829254#action_12829254
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Jonathan Ellis commented on CASSANDRA-749:
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I think having each node index its CFs locally is a lose for us, because as you 
say we have to query the full cluster for any index lookup, since we are 
throwing away our usual partitioning scheme.  

This means we add a ton of complexity (adding a completely different query 
path) in exchange for not being able to scale these queries, since the work 
generated increases in lockstep w/ machines added.

> Secondary indices for column families
> -------------------------------------
>
>                 Key: CASSANDRA-749
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-749
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Gary Dusbabek
>            Assignee: Gary Dusbabek
>            Priority: Minor
>             Fix For: 0.6
>
>         Attachments: 0001-simple-secondary-indices.patch
>
>


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