HIVE-29029: When stack UDTF is used with UNION ALL throwing ClassCastException in CBO mode. #5978
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…Exception in CBO mode.
zabetak
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Jul 15, 2025
...g/apache/hadoop/hive/ql/optimizer/calcite/rules/HiveUnionSimpleSelectsToInlineTableRule.java
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zabetak
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Jul 18, 2025
...g/apache/hadoop/hive/ql/optimizer/calcite/rules/HiveUnionSimpleSelectsToInlineTableRule.java
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Thanks for the PR @mdayakar ! |
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HIVE-29029: When stack UDTF is used with UNION ALL throwing ClassCastException in CBO mode.
What changes were proposed in this pull request?
Ignore HiveUnionSimpleSelectsToInlineTableRule when stack UDTF is used with UNION ALL.
Why are the changes needed?
To fix the ClassCastException when stack UDTF is used with UNION ALL.
Does this PR introduce any user-facing change?
No
How was this patch tested?
mvn -Dtest=TestMiniLlapLocalCliDriver -Dqfile=udtf_with_unionall.q -pl itests/qtest -Pitests