[
https://issues.apache.org/jira/browse/SPARK-37455?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Apache Spark reassigned SPARK-37455:
------------------------------------
Assignee: Apache Spark
> Replace hash with sort aggregate if child is already sorted
> -----------------------------------------------------------
>
> Key: SPARK-37455
> URL: https://issues.apache.org/jira/browse/SPARK-37455
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.3.0
> Reporter: Cheng Su
> Assignee: Apache Spark
> Priority: Minor
>
> In the query plan, if the child of hash aggregate is already sorted on
> group-by columns, we can replace hash aggregate with sort aggregate for
> better performance, as sort aggregate does not have hashing overhead of hash
> aggregate.
--
This message was sent by Atlassian Jira
(v8.20.1#820001)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
