Michael Smith has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/23924 )

Change subject: IMPALA-14102: [part 3] Modified LoptOptimizeJoinRule with 
Impala changes
......................................................................


Patch Set 4:

(4 comments)

http://gerrit.cloudera.org:8080/#/c/23924/4/java/calcite-planner/src/main/java/org/apache/impala/calcite/schema/ImpalaRelMdCumulativeCost.java
File 
java/calcite-planner/src/main/java/org/apache/impala/calcite/schema/ImpalaRelMdCumulativeCost.java:

http://gerrit.cloudera.org:8080/#/c/23924/4/java/calcite-planner/src/main/java/org/apache/impala/calcite/schema/ImpalaRelMdCumulativeCost.java@80
PS4, Line 80:    * Return the bitset of the inputrefs used for the given 
RelNode and its parent's inputref
> line too long (92 > 90)
Address this.


http://gerrit.cloudera.org:8080/#/c/23924/4/java/calcite-planner/src/main/java/org/apache/impala/calcite/schema/ImpalaRelMdCumulativeCost.java@86
PS4, Line 86:     switch (ImpalaPlanRel.getRelNodeType(rel)) {
Why not use class dispatch with different implementations of 
getInputRefsForContext?


http://gerrit.cloudera.org:8080/#/c/23924/4/java/calcite-planner/src/main/java/org/apache/impala/calcite/schema/ImpalaRelMdNonCumulativeCost.java
File 
java/calcite-planner/src/main/java/org/apache/impala/calcite/schema/ImpalaRelMdNonCumulativeCost.java:

http://gerrit.cloudera.org:8080/#/c/23924/4/java/calcite-planner/src/main/java/org/apache/impala/calcite/schema/ImpalaRelMdNonCumulativeCost.java@117
PS4, Line 117:       for (Integer i : mqContext.getInputRefs()) {
Why do we need this list if getAverageColumnSizes already returns a list? What 
makes these indices match up?


http://gerrit.cloudera.org:8080/#/c/23924/4/java/calcite-planner/src/test/java/org/apache/impala/planner/TestLoptJoinRule.java
File 
java/calcite-planner/src/test/java/org/apache/impala/planner/TestLoptJoinRule.java:

http://gerrit.cloudera.org:8080/#/c/23924/4/java/calcite-planner/src/test/java/org/apache/impala/planner/TestLoptJoinRule.java@184
PS4, Line 184:     HepProgramBuilder builder3 = new HepProgramBuilder();
Can this be removed?



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I168ae903934c5c74520a22605e73f71dc0a9d549
Gerrit-Change-Number: 23924
Gerrit-PatchSet: 4
Gerrit-Owner: Steve Carlin <[email protected]>
Gerrit-Reviewer: Aman Sinha <[email protected]>
Gerrit-Reviewer: Fang-Yu Rao <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Joe McDonnell <[email protected]>
Gerrit-Reviewer: Michael Smith <[email protected]>
Gerrit-Comment-Date: Mon, 02 Feb 2026 23:04:13 +0000
Gerrit-HasComments: Yes

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