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https://issues.apache.org/jira/browse/PHOENIX-2965?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lars Hofhansl updated PHOENIX-2965:
-----------------------------------
Attachment: 2965-v9.txt
-v9 is slightly more verbose, but easier to read and understand.
The nice thing about -v8 and later is that the changes to
OrderPreservingTracker are not needed (and those should have probably been a
red-flag)
[~giacomotaylor], please have a careful look. I ran a selection of other
tests... They all pass. This _should_ be good to go again.
> Use DistinctPrefixFilter logic for COUNT(DISTINCT ...) and COUNT(...) GROUP BY
> ------------------------------------------------------------------------------
>
> Key: PHOENIX-2965
> URL: https://issues.apache.org/jira/browse/PHOENIX-2965
> Project: Phoenix
> Issue Type: Sub-task
> Reporter: Lars Hofhansl
> Assignee: Lars Hofhansl
> Fix For: 4.8.0
>
> Attachments: 2965-v2.txt, 2965-v3.txt, 2965-v4.txt, 2965-v5.txt,
> 2965-v6.txt, 2965-v7.txt, 2965-v8.txt, 2965-v9.txt, 2965.txt,
> PHOENIX-2965_wip.patch
>
>
> Parent uses skip scanning to optimize DISTINCT and certain GROUP BY
> operations along the row key.
> COUNT queries are optimized differently, could be sped up significantly as
> well.
> [~giacomotaylor], I might need to help into where COUNT(DISTINCT) queries are
> planned and optimized.
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