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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2022/12/12 00:22:00 UTC
[jira] [Work logged] (HIVE-26618) Add setting to turn on/off removing sections of a query plan known never produces rows
[ https://issues.apache.org/jira/browse/HIVE-26618?focusedWorklogId=832603&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-832603 ]
ASF GitHub Bot logged work on HIVE-26618:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 12/Dec/22 00:21
Start Date: 12/Dec/22 00:21
Worklog Time Spent: 10m
Work Description: github-actions[bot] commented on PR #3659:
URL: https://github.com/apache/hive/pull/3659#issuecomment-1345706437
This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.
Feel free to reach out on the dev@hive.apache.org list if the patch is in need of reviews.
Issue Time Tracking
-------------------
Worklog Id: (was: 832603)
Time Spent: 40m (was: 0.5h)
> Add setting to turn on/off removing sections of a query plan known never produces rows
> --------------------------------------------------------------------------------------
>
> Key: HIVE-26618
> URL: https://issues.apache.org/jira/browse/HIVE-26618
> Project: Hive
> Issue Type: Improvement
> Components: CBO
> Reporter: Krisztian Kasa
> Assignee: Krisztian Kasa
> Priority: Major
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> HIVE-26524 introduced an optimization to remove sections of query plan known never produces rows.
> Add a setting into hive conf to turn on/off this optimization.
> When the optimization is turned off restore the legacy behavior:
> * represent empty result operator with {{HiveSortLimit}} 0
> * disable {{HiveRemoveEmptySingleRules}}
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