[jira] [Comment Edited] (KYLIN-5878) ReduceExpressionRule does not work for OlapRel

["pengfei.zhan (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KYLIN-5878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17865938#comment-17865938 ] 

pengfei.zhan edited comment on KYLIN-5878 at 7/15/24 8:16 AM:
--------------------------------------------------------------

This issue is a follow up of KYLIN-5875, please refer to that issue. 

Calcite sometimes gives inappropriate cost in VolcanoPlanner,let the ReduceExpressionRule run again in post-optimization
so that SegmentPruningRule and FilePruner can work.

ReduceExpressionRule can only work for LogicalProject, however, OlapProjectRel extends Project. Therefore, the conversion use these rules in the ReduceExpressionRule don't work. This issue will define some rules in the KYLIN to overwrite the default ones.


was (Author: JIRAUSER294653):
This issue is a follow up of KYLIN-5875, please refer to that issue. 

Calcite sometimes gives inappropriate cost in VolcanoPlanner,let the ReduceExpressionRule run again in post-optimization
so that SegmentPruningRule and FilePruner can work.

ReduceExpressionRule can only work for LogicalProject, however, OlapProjectRel extends Project. Therefore, the conversion use these rules in the ReduceExpressionRule don't work.
This pull request will define some rules in the KYLIN to overwrite the default ones.

> ReduceExpressionRule does not work for OlapRel
> ----------------------------------------------
>
>                 Key: KYLIN-5878
>                 URL: https://issues.apache.org/jira/browse/KYLIN-5878
>             Project: Kylin
>          Issue Type: Bug
>          Components: Query Engine
>    Affects Versions: 5.0-alpha
>            Reporter: pengfei.zhan
>            Assignee: pengfei.zhan
>            Priority: Major
>             Fix For: 5.0.0
>
>




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