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https://issues.apache.org/jira/browse/PHOENIX-5096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17003159#comment-17003159
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Lars Hofhansl commented on PHOENIX-5096:
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It's an internal optimization, no behavior is changed. Not sure it needs to be
documented other than the existing code comments.
Hmm, that said... Perhaps on the Phoenix site, so that people are aware of this?
> 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
> Assignee: Lars Hofhansl
> Priority: Major
> Fix For: 5.1.0, 4.16.0
>
> Attachments: 5096-4.x-HBase-1.5-v2.txt, 5096-4.x-HBase-1.5-v3.txt,
> 5096-4.x-HBase-1.5.txt
>
>
> 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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