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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PHOENIX-3005) Use DistinctPrefixFilter for COUNT(DISTINCT...) index scans
Date Sun, 19 Jun 2016 23:51:05 GMT

     [ https://issues.apache.org/jira/browse/PHOENIX-3005?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lars Hofhansl updated PHOENIX-3005:
-----------------------------------
    Attachment: 3005-wip-v1.txt

WIP-v1 passes all test (including some new ones I added).
I do not trust it, yet.

I had to make changes to QueryOptimizer that I do not like. I'll continue looking.

> Use DistinctPrefixFilter for COUNT(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
>
>         Attachments: 3005-wip-v1.txt, PHOENIX-3005_v1.patch
>
>
> Currently the optimization in PHOENIX-258 is not used for DISTINCT index scans. We should
add that as well.



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