You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@hive.apache.org by "Seonggon Namgung (Jira)" <ji...@apache.org> on 2024/10/31 01:22:00 UTC

[jira] [Updated] (HIVE-28489) Partitioning the input data of Grouping Set GroupBy operator

     [ https://issues.apache.org/jira/browse/HIVE-28489?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Seonggon Namgung updated HIVE-28489:
------------------------------------
    Attachment:     (was: 2.PartitionDataBeforeGroupingSet.pptx)

> Partitioning the input data of Grouping Set GroupBy operator
> ------------------------------------------------------------
>
>                 Key: HIVE-28489
>                 URL: https://issues.apache.org/jira/browse/HIVE-28489
>             Project: Hive
>          Issue Type: New Feature
>            Reporter: Seonggon Namgung
>            Assignee: Seonggon Namgung
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: 2.PartitionDataBeforeGroupingSet.pdf
>
>
> GroupBy operator with grouping sets often emits too many rows, which becomes the bottleneck of query execution. To reduce the number output rows, this JIRA proposes partitioning the input data of such GroupBy operator.
> Please check out the attached slides for detailed explanation.



--
This message was sent by Atlassian Jira
(v8.20.10#820010)