Seonggon Namgung created HIVE-26968:
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Summary: 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
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.
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