hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Stamatis Zampetakis (Jira)" <>
Subject [jira] [Assigned] (HIVE-24601) Control CBO fallback behavior via property
Date Thu, 07 Jan 2021 10:56:00 GMT


Stamatis Zampetakis reassigned HIVE-24601:

> Control CBO fallback behavior via property
> ------------------------------------------
>                 Key: HIVE-24601
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Stamatis Zampetakis
>            Assignee: Stamatis Zampetakis
>            Priority: Major
> When CBO optimizer fails there is a fallback mechanism(HIVE-7413) that will retry to
process the query using the legacy Hive optimizer. 
> There are use-cases where this behavior is not desirable notably for the tests (HIVE-16058)
but also for end users who would like to disable the fall-back mechanism to avoid running
problematic queries without realizing.
> The goal of this issue is to introduce a dedicated Hive property controlling this behavior,{{hive.cbo.fallback.enable}},
for both tests and production. The default value should be true and tests should run with
this property set to false. 

This message was sent by Atlassian Jira

View raw message