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https://issues.apache.org/jira/browse/PHOENIX-3050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16369775#comment-16369775
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Maryann Xue commented on PHOENIX-3050:
--------------------------------------
Thank you, [~rajeshbabu], for reminding me! 5.x branch has now caught up with
all my recent check-ins.
> Handle DESC columns in child/parent join optimization
> -----------------------------------------------------
>
> Key: PHOENIX-3050
> URL: https://issues.apache.org/jira/browse/PHOENIX-3050
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 4.8.0
> Reporter: Maryann Xue
> Assignee: Maryann Xue
> Priority: Minor
> Fix For: 4.14.0
>
> Attachments: PHOENIX-3050.patch
>
>
> We found that child/parent join optimization would not work with DESC pk
> columns. So as a quick fix for PHOENIX-3029, we simply avoid DESC columns
> when optimizing, which would have no impact on the overall approach and no
> impact on ASC columns.
>
> But eventually we need to make the optimization work with DESC columns too.
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