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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-3005) Use DistinctPrefixFilter for DISTINCT index scans
Date Sat, 18 Jun 2016 23:04:05 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-3005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15338248#comment-15338248
] 

Lars Hofhansl commented on PHOENIX-3005:
----------------------------------------

Can this lead to other bugs? For example we may have a SELECT that would be order preserving,
but we scanning along an index? I guess we're lucky that in this case we'd never use an index.
(I think)

> Use DistinctPrefixFilter for DISTINCT index scans
> -------------------------------------------------
>
>                 Key: PHOENIX-3005
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-3005
>             Project: Phoenix
>          Issue Type: Sub-task
>            Reporter: Lars Hofhansl
>             Fix For: 4.8.0
>
>
> Currently the optimization in PHOENIX-258 is not used for DISTINCT index scans. We should
add that as well.



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