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https://issues.apache.org/jira/browse/PHOENIX-5096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16740029#comment-16740029
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Lars Hofhansl commented on PHOENIX-5096:
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I suppose the thought was that the index just needs to be declared with the
prefix queries in mind.
Not what I expected, since with local indexes we can do better, but it's not
wrong or anything.
I had though we declare a local index as before and _in addition_ prune the
regions, purely based on the pk parts of the WHERE clause.
> Local index region pruning is not working as expected.
> ------------------------------------------------------
>
> Key: PHOENIX-5096
> URL: https://issues.apache.org/jira/browse/PHOENIX-5096
> Project: Phoenix
> Issue Type: Bug
> Reporter: Lars Hofhansl
> Priority: Major
>
> The pruning of local indexes should do the following:
> * Use the local index
> * Reduce the number of regions based on filters on the table's primary key
> (i.e. WHERE conditions including prefixes of the primary key)
> Instead it looks like in order for this to work the needed PK column need to
> be included in the local index itself, changing the sort order of the local
> index.
> I'll provide some examples in the comments.
> [~giacomotaylor], [~tdsilva], [~vincentpoon], [~elserj], [~gjacoby]
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