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https://issues.apache.org/jira/browse/HIVE-12543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jesus Camacho Rodriguez updated HIVE-12543:
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Attachment: HIVE-12543.02.patch
New version of the patch, still merged with HIVE-12478.
The patch removes 2 out of 3 calls to ConstantPropagate; the last call needs
further investigation, as there is some interaction with RewriteGBUsingIndex
rule.
ReduceExpressions in Calcite needed to be extended to remove {{isnotnull}}
factors if there is already a null filtering condition in the same conjunction.
Further, recognition of {{case}} in Calcite needed to be implemented so we can
take advantage of the special logic in Reduce expressions for {{case}}.
Finally, recognition of {{!=}} as "not equals" operator in Calcite has also
been included.
> Disable Hive ConstantPropagate optimizer when CBO has optimized the plan
> ------------------------------------------------------------------------
>
> Key: HIVE-12543
> URL: https://issues.apache.org/jira/browse/HIVE-12543
> Project: Hive
> Issue Type: Sub-task
> Components: CBO, Logical Optimizer
> Affects Versions: 2.0.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Attachments: HIVE-12543.01.patch, HIVE-12543.02.patch,
> HIVE-12543.patch
>
>
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