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https://issues.apache.org/jira/browse/HIVE-9856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14348873#comment-14348873
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Jesus Camacho Rodriguez commented on HIVE-9856:
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[~mmokhtar], [~jpullokkaran], [~ashutoshc]
> CBO (Calcite Return Path): Join cost calculation improvements and algorithm
> selection implementation [CBO branch]
> -----------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-9856
> URL: https://issues.apache.org/jira/browse/HIVE-9856
> Project: Hive
> Issue Type: Sub-task
> Components: CBO
> Affects Versions: cbo-branch
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Fix For: cbo-branch
>
> Attachments: HIVE-9856.01.cbo.patch, HIVE-9856.cbo.patch
>
>
> This patch implements more precise cost functions for join operators that may
> help us decide which join algorithm we want to execute directly in the CBO.
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