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 2023/01/25 08:39:00 UTC

[jira] [Assigned] (HIVE-26968) SharedWorkOptimizer merges TableScan operators that have different DPP parents

     [ https://issues.apache.org/jira/browse/HIVE-26968?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Seonggon Namgung reassigned HIVE-26968:
---------------------------------------

    Assignee: Seonggon Namgung

> SharedWorkOptimizer merges TableScan operators that have different DPP parents
> ------------------------------------------------------------------------------
>
>                 Key: HIVE-26968
>                 URL: https://issues.apache.org/jira/browse/HIVE-26968
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Seonggon Namgung
>            Assignee: Seonggon Namgung
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> SharedWorkOptimizer merges TableScan operators that have different DPP parents, which leads to the creation of semantically wrong query plan.
> In our environment, running TPC-DS query64 on 1TB Iceberg format table returns no rows  because of this problem. (The corrent result has 7094 rows.)
> We use hive.optimize.shared.work=true, hive.optimize.shared.work.extended=true, and hive.optimize.shared.work.dppunion=false to reproduce the bug.



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