Hello Impala Public Jenkins,

I'd like you to reexamine a change. Please visit

    http://gerrit.cloudera.org:8080/24556

to look at the new patch set (#3).

Change subject: IMPALA-15127: Support HBO for UnionNode cardinality
......................................................................

IMPALA-15127: Support HBO for UnionNode cardinality

This extends HBO to support tracking and using cardinality of
UnionNodes. Only FE changes are needed.

The HBO key string of a UnionNode consits of the number of const
operands and the key strings of its children. The children strings are
sorted so the operand order doesn't matter.

Testing
 - Added FE tests for HBO key strings.
 - Added e2e tests on all UNION types.

Assisted-by: Opus 4.8 (Claude Code)
Change-Id: Ie228f530bdcb171d3b717966673164bf9a4c45c8
---
M fe/src/main/java/org/apache/impala/planner/UnionNode.java
M fe/src/test/java/org/apache/impala/planner/HboKeyStringTest.java
A testdata/workloads/functional-query/queries/QueryTest/hbo-union.test
M tests/query_test/test_hbo.py
4 files changed, 214 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/56/24556/3
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ie228f530bdcb171d3b717966673164bf9a4c45c8
Gerrit-Change-Number: 24556
Gerrit-PatchSet: 3
Gerrit-Owner: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Quanlong Huang <[email protected]>

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