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Posted to issues@calcite.apache.org by "Rui Wang (Jira)" <ji...@apache.org> on 2020/06/09 01:31:00 UTC

[jira] [Commented] (CALCITE-4052) Enable Top-down Optimization

    [ https://issues.apache.org/jira/browse/CALCITE-4052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17128761#comment-17128761 ] 

Rui Wang commented on CALCITE-4052:
-----------------------------------

Also tries to make this JIRA as an umbrella to connect all efforts under top-down optimization. 

> Enable Top-down Optimization
> ----------------------------
>
>                 Key: CALCITE-4052
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4052
>             Project: Calcite
>          Issue Type: Task
>            Reporter: Rui Wang
>            Priority: Major
>
> We can enable top-down opt globally by updating saffron.properties. 
> Some tests will fail because top-down opt changes the output plan.
> The easiest way is to update those tests to make them match the output plan produced after top-down opt.
> Alternatively, we might change testing framework to verify two output plans: one for top-down opt, another for when top-down opt not enabled.



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