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https://issues.apache.org/jira/browse/CASSANDRA-7771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14703315#comment-14703315
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Sam Tunnicliffe commented on CASSANDRA-7771:
--------------------------------------------

This is ready for review. Unfortunately, it's tightly coupled to 
CASSANDRA-9459, so it needs to be looked at in that broader context. The branch 
is [here|https://github.com/beobal/cassandra/tree/9459-wip] where most of the 
relevant stuff is in 
{code}
commit fe9b0fe7cdaaf9a23bd56586a074637efb187ef6
Author: Sam Tunnicliffe <[email protected]>
Date:   Tue Aug 18 20:36:56 2015 +0100

    Support for multiple indexes on a single column
{code}

> Allow multiple 2ndary index on the same column
> ----------------------------------------------
>
>                 Key: CASSANDRA-7771
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7771
>             Project: Cassandra
>          Issue Type: New Feature
>            Reporter: Sylvain Lebresne
>            Assignee: Sam Tunnicliffe
>              Labels: client-impacting
>             Fix For: 3.0 beta 1
>
>
> Currently, the code assumes that we'll only have one 2ndary index per column. 
> This has been reasonable so far but stop being it with CASSANDRA-6382 (you 
> might want to index multiple fields of the same UDT column) and 
> CASSANDRA-7458 (you may want to have one "normal" index an multiple 
> functional index for the same column). So we should consider removing that 
> assumption in the code, which is mainly 2 places:
> # in the schema: each ColumnDefinition only has infos for one index. This 
> part should probably be tackled in CASSANDRA-6717 so I'm marking this issue 
> as a follow-up of CASSANDRA-6717.
> # in the 2ndary index API: this is the part I'm suggesting we fix in this 
> issue.



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