HIVE-29029: When stack UDTF is used with UNION ALL throwing ClassCastException in CBO mode.#5978
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zabetak merged 2 commits intoapache:masterfrom Jul 21, 2025
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…Exception in CBO mode.
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...g/apache/hadoop/hive/ql/optimizer/calcite/rules/HiveUnionSimpleSelectsToInlineTableRule.java
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LGTM. Spotted some small stuff but we can leave with those.
...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