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https://issues.apache.org/jira/browse/HIVE-11918?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14935624#comment-14935624
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Julian Hyde commented on HIVE-11918:
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[~pxiong], I have a tentative fix for CALCITE-902 in
https://github.com/julianhyde/incubator-calcite/commit/9adf259763a9c52a6db8d4a19425722fbedcaa6c.
See whether this fix improves things in Hive.
> Implement/Enable constant related optimization rules in Calcite
> ---------------------------------------------------------------
>
> Key: HIVE-11918
> URL: https://issues.apache.org/jira/browse/HIVE-11918
> Project: Hive
> Issue Type: Improvement
> Reporter: Pengcheng Xiong
> Assignee: Pengcheng Xiong
>
> Right now, Hive optimizer (Calcite) is short of the constant related
> optimization rules. For example, constant folding, constant propagation and
> constant transitive rules. Although Hive later provides those rules in the
> logical optimizer, we would like to implement those inside Calcite. This will
> benefit the current optimization as well as the optimization based on return
> path that we are planning to use in the future. This JIRA is the umbrella
> JIRA to implement/enable those rules.
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