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Posted to issues@hive.apache.org by "Vineet Garg (Jira)" <ji...@apache.org> on 2019/12/12 12:41:00 UTC
[jira] [Assigned] (HIVE-22637) Avoid cost based rules during
generating expressions from AST
[ https://issues.apache.org/jira/browse/HIVE-22637?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vineet Garg reassigned HIVE-22637:
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> Avoid cost based rules during generating expressions from AST
> -------------------------------------------------------------
>
> Key: HIVE-22637
> URL: https://issues.apache.org/jira/browse/HIVE-22637
> Project: Hive
> Issue Type: Improvement
> Components: Query Planning
> Reporter: Vineet Garg
> Assignee: Vineet Garg
> Priority: Major
>
> genExprNode uses default dispatcher which fire rules based on cost, computation of cost is expensive and looks un-necessary.
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