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https://issues.apache.org/jira/browse/HIVE-8774?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pengcheng Xiong updated HIVE-8774:
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Attachment: HIVE-8774.1.patch
The basic problem is that
for SEL1-SEL2-GRY-...-SEL3,
the previous version only modify SEL2, which immediately precedes GRY.
Now, with CBO, we have lots of SELs, e.g., SEL1.
So, the solution is to modify all of them.
> CBO: enable groupBy index
> -------------------------
>
> Key: HIVE-8774
> URL: https://issues.apache.org/jira/browse/HIVE-8774
> Project: Hive
> Issue Type: Improvement
> Reporter: Pengcheng Xiong
> Assignee: Pengcheng Xiong
> Attachments: HIVE-8774.1.patch
>
>
> Right now, even when groupby index is build, CBO is not able to use it. In
> this patch, we are trying to make it use groupby index that we build.
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