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https://issues.apache.org/jira/browse/HIVE-11678?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14745871#comment-14745871
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Ashutosh Chauhan commented on HIVE-11678:
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[~jcamachorodriguez] would you like to take a look? In addition to generating
better plans, this change also results in retaining column names in plan which
is neat.
> Add AggregateProjectMergeRule
> -----------------------------
>
> Key: HIVE-11678
> URL: https://issues.apache.org/jira/browse/HIVE-11678
> Project: Hive
> Issue Type: New Feature
> Components: CBO, Logical Optimizer
> Reporter: Ashutosh Chauhan
> Assignee: Ashutosh Chauhan
> Attachments: HIVE-11678.2.patch, HIVE-11678.3.patch,
> HIVE-11678.4.patch, HIVE-11678.5.patch, HIVE-11678.patch
>
>
> This will help to get rid of extra projects on top of Aggregation, thus
> compacting query plan.
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