Quanlong Huang 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/24426/31/fe/src/main/java/org/apache/impala/planner/PlanNode.java
File fe/src/main/java/org/apache/impala/planner/PlanNode.java:

http://gerrit.cloudera.org:8080/#/c/24426/31/fe/src/main/java/org/apache/impala/planner/PlanNode.java@1135
PS31, Line 1135:     // Keeps the prefix by default. Nodes that add nested 
operand index into the prefix,
               :     // e.g. JoinNode, should override this.
               :     Map<TupleId, String> map = new HashMap<>(tupl
This is too strict. buildHboOperandQualifierMap() could run on nodes that HBO 
doesn't support yet, e.g. EmptySetNode, and they could have more than one 
tuple. PS32 relaxes this to keep using the same prefix for all tuples.



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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 11:27:37 +0000
Gerrit-HasComments: Yes

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