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https://issues.apache.org/jira/browse/CALCITE-4583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17322346#comment-17322346
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Julian Hyde commented on CALCITE-4583:
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In 2338, the word "conservative" means "not wasting CPU cycles". Is that the 
sense that you mean it?

(I haven't read your PR, and don't intend to, until your goals are clearly 
spelled out in this JIRA case.)




> Make simplification API more conservative in "RelBuilder#filter"
> ----------------------------------------------------------------
>
>                 Key: CALCITE-4583
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4583
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>            Reporter: Jiatao Tao
>            Assignee: Jiatao Tao
>            Priority: Critical
>              Labels: pull-request-available
>         Attachments: image-2021-04-15-20-52-15-757.png
>
>          Time Spent: 1h 10m
>  Remaining Estimate: 0h
>
> Previous in CALCITE-2338, we make simplification configurable in most methods 
> except RelBuilder#filter, this Jira aims to cover this method.



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