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Posted to issues-all@impala.apache.org by "Aman Sinha (Jira)" <ji...@apache.org> on 2020/04/25 01:17:00 UTC
[jira] [Commented] (IMPALA-9539) Enable the conjunctive normal form
rewrites by default
[ https://issues.apache.org/jira/browse/IMPALA-9539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17091999#comment-17091999 ]
Aman Sinha commented on IMPALA-9539:
------------------------------------
Created gerrit review request: https://gerrit.cloudera.org/c/15807/
> Enable the conjunctive normal form rewrites by default
> ------------------------------------------------------
>
> Key: IMPALA-9539
> URL: https://issues.apache.org/jira/browse/IMPALA-9539
> Project: IMPALA
> Issue Type: Bug
> Components: Frontend
> Reporter: Aman Sinha
> Assignee: Aman Sinha
> Priority: Major
>
> IMPALA-9183 adds the functionality to convert disjunctive predicates into conjunctive normal form (CNF). Currently, the rewrite is disabled by default and can be enabled by setting enable_cnf_rewrites to true. Since it can cause several plan changes, we should ensure it does not cause regressions (both in terms of result correctness and performance) and then enable it by default. This JIRA is a follow-up to IMPALA-9183.
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