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https://issues.apache.org/jira/browse/PHOENIX-3225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15455945#comment-15455945
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James Taylor commented on PHOENIX-3225:
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Please comment on PHOENIX-418 so we have these good insights together on the
relevant JIRA.
> Distinct Queries are slower than expected at scale.
> ---------------------------------------------------
>
> Key: PHOENIX-3225
> URL: https://issues.apache.org/jira/browse/PHOENIX-3225
> Project: Phoenix
> Issue Type: Sub-task
> Reporter: Lars Hofhansl
>
> In our large scale tests we found that we can easily sort 400G on a few 100
> machines, but that a simple DISTINCT would just time out. Perhaps that's
> expected as we have to keep track of the unique values, but we should
> investigate.
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