Riza Suminto has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/18327 )

Change subject: IMPALA-11123: Optimize count(star) for ORC scans
......................................................................


Patch Set 10:

(2 comments)

http://gerrit.cloudera.org:8080/#/c/18327/9/be/src/exec/hdfs-columnar-scanner.cc
File be/src/exec/hdfs-columnar-scanner.cc:

http://gerrit.cloudera.org:8080/#/c/18327/9/be/src/exec/hdfs-columnar-scanner.cc@319
PS9, Line 319:   *dst_slot = num_rows;
> I think that we can remove this, there is no real need to be backward compa
Replaced it with NumFileMetadataRead.


http://gerrit.cloudera.org:8080/#/c/18327/9/tests/query_test/test_aggregation.py
File tests/query_test/test_aggregation.py:

http://gerrit.cloudera.org:8080/#/c/18327/9/tests/query_test/test_aggregation.py@260
PS9, Line 260: test_ndv(self):
> I agree with moving count_star_optimization tests to a different class.
Done



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I0fafa1182f97323aeb9ee39dd4e8ecd418fa6091
Gerrit-Change-Number: 18327
Gerrit-PatchSet: 10
Gerrit-Owner: Riza Suminto <[email protected]>
Gerrit-Reviewer: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Qifan Chen <[email protected]>
Gerrit-Reviewer: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Riza Suminto <[email protected]>
Gerrit-Comment-Date: Fri, 01 Apr 2022 21:22:14 +0000
Gerrit-HasComments: Yes

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