Aleksandr Efimov has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/24426 )

Change subject: IMPALA-14601: Support HBO for JoinNode cardinality
......................................................................


Patch Set 32:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/24426/32/fe/src/test/java/org/apache/impala/planner/HboKeyStringTest.java
File fe/src/test/java/org/apache/impala/planner/HboKeyStringTest.java:

http://gerrit.cloudera.org:8080/#/c/24426/32/fe/src/test/java/org/apache/impala/planner/HboKeyStringTest.java@943
PS32, Line 943:     AggregationNode q1Final = (AggregationNode) 
q1Nodes.get(FINAL_AGG_ID);
Two HboKeyStringTest cases fail in my test environment with the current HBO 
stack: testAggOnMultiLevelJoinOperands() casts an ExchangeNode to 
AggregationNode here, and testMultiLevelOpIndexUnderInnerJoin() does the same 
with JoinNode at line 1009. Both lookups use fixed plan-node IDs. The failures 
also occur when I replace PlanNode with the PS31 version.

Could we find the aggregations by traversing the plan and select the single 
INNER join by its join type? With that test-only change, all 49 tests in the 
stacked HboKeyStringTest pass with the existing expected keys unchanged.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I70b655ae7027d0d9eb8e9fae9ba2e1b7ad9876b4
Gerrit-Change-Number: 24426
Gerrit-PatchSet: 32
Gerrit-Owner: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Aleksandr Efimov <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Steve Carlin <[email protected]>
Gerrit-Comment-Date: Tue, 08 Sep 2026 13:50:28 +0000
Gerrit-HasComments: Yes

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