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https://issues.apache.org/jira/browse/HIVE-25242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17362821#comment-17362821
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Rajesh Balamohan commented on HIVE-25242:
-----------------------------------------
Related tickets
https://issues.apache.org/jira/browse/HIVE-21935
https://issues.apache.org/jira/browse/HIVE-15627
> 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
> Fix For: 4.0.0
>
>
> 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}
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