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Posted to issues@hive.apache.org by "Attila Magyar (Jira)" <ji...@apache.org> on 2021/06/14 08:29:00 UTC
[jira] [Updated] (HIVE-25242) Query performs extremely slow with hive.vectorized.adaptor.usage.mode = chosen
[ https://issues.apache.org/jira/browse/HIVE-25242?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Attila Magyar updated HIVE-25242:
---------------------------------
Description:
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}
> 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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