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https://issues.apache.org/jira/browse/HIVE-26968?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Seonggon Namgung updated HIVE-26968:
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Attachment: TPC-DS Query64 OperatorGraph.pdf
> 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
> Affects Versions: 4.0.0-alpha-2
> Reporter: Seonggon Namgung
> Assignee: Seonggon Namgung
> Priority: Critical
> Labels: pull-request-available
> Attachments: TPC-DS Query64 OperatorGraph.pdf
>
> 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 correct 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.
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