Joe McDonnell has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/23732 )

Change subject: IMPALA-14594: Scale grouping aggregator's input cardinality by 
the number of backends
......................................................................


Patch Set 2:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/23732/2/be/src/exec/aggregation-node-base.cc
File be/src/exec/aggregation-node-base.cc:

http://gerrit.cloudera.org:8080/#/c/23732/2/be/src/exec/aggregation-node-base.cc@101
PS2, Line 101:     estimated_input_cardinality = 
agg_node.estimated_input_cardinality / num_backends_;
> Good point, I need to make this use the number of fragment instances.
Changed this to use the number of fragment instances.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Iaf66709f12ea9b7328ca4e4c5cd45a05c9dc3032
Gerrit-Change-Number: 23732
Gerrit-PatchSet: 2
Gerrit-Owner: Joe McDonnell <[email protected]>
Gerrit-Reviewer: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Joe McDonnell <[email protected]>
Gerrit-Reviewer: Michael Smith <[email protected]>
Gerrit-Reviewer: Quanlong Huang <[email protected]>
Gerrit-Comment-Date: Mon, 22 Jun 2026 22:06:08 +0000
Gerrit-HasComments: Yes

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