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From "Adam Holmberg (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-7771) Allow multiple 2ndary index on the same column
Date Fri, 21 Aug 2015 14:28:46 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14706794#comment-14706794
] 

Adam Holmberg commented on CASSANDRA-7771:
------------------------------------------

Present implrementation displays only the last index found for the column (in CQL desc output).
There is no breakdown.

I should be able to start this update today to properly model multiple indexes.

> 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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