Michael Smith has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/22091 )

Change subject: IMPALA-13531: Calcite CTE frontend
......................................................................


Patch Set 10:

(2 comments)

http://gerrit.cloudera.org:8080/#/c/22091/10/fe/src/main/java/org/apache/impala/planner/CTEScanNode.java
File fe/src/main/java/org/apache/impala/planner/CTEScanNode.java:

http://gerrit.cloudera.org:8080/#/c/22091/10/fe/src/main/java/org/apache/impala/planner/CTEScanNode.java@42
PS10, Line 42: public class CTEScanNode extends PlanNode {
This name doesn't seem appropriate. It functions more like an exchange. So I'd 
like to revisit naming for a bunch of the new constructs in this patch.


http://gerrit.cloudera.org:8080/#/c/22091/10/java/calcite-planner/src/main/java/org/apache/impala/calcite/rel/node/ImpalaCTEConsumer.java
File 
java/calcite-planner/src/main/java/org/apache/impala/calcite/rel/node/ImpalaCTEConsumer.java:

http://gerrit.cloudera.org:8080/#/c/22091/10/java/calcite-planner/src/main/java/org/apache/impala/calcite/rel/node/ImpalaCTEConsumer.java@36
PS10, Line 36: public class ImpalaCTEConsumer extends TableScan implements 
ImpalaPlanRel {
I based this on a TableScan because I figured RelOptMaterialization in 
https://gerrit.cloudera.org/c/22091/10/java/calcite-planner/src/main/java/org/apache/impala/calcite/service/CalciteOptimizer.java#447
 expected one, but it seems to work with any RelNode.

This functions more like a broadcast exchange, and would actually simplify the 
code to treat it as an Exchange or SingleRel.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Id0840c0859d2fe25628d799a18d302cee1eb36e8
Gerrit-Change-Number: 22091
Gerrit-PatchSet: 10
Gerrit-Owner: Michael Smith <[email protected]>
Gerrit-Reviewer: Anonymous Coward (816)
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Joe McDonnell <[email protected]>
Gerrit-Reviewer: Michael Smith <[email protected]>
Gerrit-Reviewer: Steve Carlin <[email protected]>
Gerrit-Comment-Date: Tue, 25 Nov 2025 21:00:06 +0000
Gerrit-HasComments: Yes

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