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Posted to issues@calcite.apache.org by "Haisheng Yuan (Jira)" <ji...@apache.org> on 2020/05/19 06:47:00 UTC

[jira] [Commented] (CALCITE-4013) Remove traitset derivation when creating logical operators

    [ https://issues.apache.org/jira/browse/CALCITE-4013?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17110902#comment-17110902 ] 

Haisheng Yuan commented on CALCITE-4013:
----------------------------------------

Physical operator shouldn't do it either, in fact. We shouldn't do it at all when creating operators, no matter it is logical or physical.

> Remove traitset derivation when creating logical operators
> ----------------------------------------------------------
>
>                 Key: CALCITE-4013
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4013
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>            Reporter: Haisheng Yuan
>            Priority: Major
>
> Profiler shows traitset derivation accounts for 65% of the total runtime of LoigcalProject.create(). Anyway, EnumerableProject will do it again.



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