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https://issues.apache.org/jira/browse/CASSANDRA-7771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14707241#comment-14707241
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Aleksey Yeschenko commented on CASSANDRA-7771:
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The logic LGTM, but I'd put the bulk of it into
{{IndexMetadata.equalsWithoutName()}} method instead - and use Guava's
{{Iterables.any()}} here.
> 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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