Michael Smith has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/25030 )

Change subject: IMPALA-15489: Inefficient CTE plans with trivial IS NOT NULL 
filters
......................................................................


Patch Set 1:

> Patch Set 1:
>
> > Patch Set 1:
> >
> > @Joe, Michael, Steve: Can someone launch a small scale TPC-DS run similar 
> > to https://jenkins.impala.io/job/perf-AB-test-ub2204/46/
> >
> > I don't have permissions to use this Jenkins job.
>
> https://jenkins.impala.io/job/perf-AB-test-ub2204/53/

https://jenkins.impala.io/job/perf-AB-test-ub2204/53/artifact/Impala/perf_results/latest/performance_result.txt:

+-----------+-----------------------+---------+------------+------------+----------------+
| Workload  | File Format           | Avg (s) | Delta(Avg) | GeoMean(s) | 
Delta(GeoMean) |
+-----------+-----------------------+---------+------------+------------+----------------+
| TPCDS(20) | parquet / none / none | 0.79    | -3.23%     | 0.44       | 
-3.78%         |
+-----------+-----------------------+---------+------------+------------+----------------+

Q88 does significantly worse (1.38s -> 2.89s [+109.52%]); Q65, Q80A, Q31, 
Q14-2, Q81, Q1, and a dozen others see strong improvement.


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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Id5084b4b03cb0277a945338855a2d85f6c04a211
Gerrit-Change-Number: 25030
Gerrit-PatchSet: 1
Gerrit-Owner: Stamatis Zampetakis <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Joe McDonnell <[email protected]>
Gerrit-Reviewer: Michael Smith <[email protected]>
Gerrit-Reviewer: Stamatis Zampetakis <[email protected]>
Gerrit-Reviewer: Steve Carlin <[email protected]>
Gerrit-Comment-Date: Wed, 07 Oct 2026 18:18:04 +0000
Gerrit-HasComments: No

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