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https://issues.apache.org/jira/browse/HIVE-25242?focusedWorklogId=612675&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-612675
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ASF GitHub Bot logged work on HIVE-25242:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 21/Jun/21 14:41
Start Date: 21/Jun/21 14:41
Worklog Time Spent: 10m
Work Description: zeroflag commented on pull request #2390:
URL: https://github.com/apache/hive/pull/2390#issuecomment-865088192
@pgaref yes, I added a note on the ticket about whitelisting the concat. The
patch was tested by a customer and didn't report any side effects.
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Issue Time Tracking
-------------------
Worklog Id: (was: 612675)
Time Spent: 0.5h (was: 20m)
> Query performs extremely slow with hive.vectorized.adaptor.usage.mode =
> chosen
> -------------------------------------------------------------------------------
>
> Key: HIVE-25242
> URL: https://issues.apache.org/jira/browse/HIVE-25242
> Project: Hive
> Issue Type: Bug
> Components: HiveServer2
> Affects Versions: 4.0.0
> Reporter: Attila Magyar
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> If hive.vectorized.adaptor.usage.mode is set to chosen only certain UDFS are
> vectorized through the vectorized adaptor.
> Queries like this one, performs very slowly because the concat is not chosen
> to be vectorized.
> {code:java}
> select count(*) from tbl where to_date(concat(year, '-', month, '-', day))
> between to_date('2018-12-01') and to_date('2021-03-01'); {code}
> The patch whitelists the concat udf so that it uses the vectorized adaptor in
> chosen mode.
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