Aleksandr Efimov has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/24592 )

Change subject: IMPALA-15189: Support HBO for SortNode cardinality
......................................................................


Patch Set 5:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/24592/5/fe/src/main/java/org/apache/impala/planner/DistributedPlanner.java
File fe/src/main/java/org/apache/impala/planner/DistributedPlanner.java:

http://gerrit.cloudera.org:8080/#/c/24592/5/fe/src/main/java/org/apache/impala/planner/DistributedPlanner.java@1294
PS5, Line 1294:       lowerTopN.setTopNMergeInput(true);
> The recompute drops the HBO cardinality but not hasHboCard_ - nothing ever
The reset is covered by the merged IMPALA-15236. Let's keep the cardinality 
discussion in the PS6 thread at line 1352.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ib829887a91593bee124d56e661e714575fe3be97
Gerrit-Change-Number: 24592
Gerrit-PatchSet: 5
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-Comment-Date: Sun, 06 Sep 2026 07:16:49 +0000
Gerrit-HasComments: Yes

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