Steve Carlin has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/24079 )

Change subject: IMPALA-14820: Calcite Planner: Memory allocations are too high
......................................................................


Patch Set 4:

(2 comments)

http://gerrit.cloudera.org:8080/#/c/24079/3/java/calcite-planner/src/main/java/org/apache/impala/calcite/service/CalciteSingleNodePlanner.java
File 
java/calcite-planner/src/main/java/org/apache/impala/calcite/service/CalciteSingleNodePlanner.java:

http://gerrit.cloudera.org:8080/#/c/24079/3/java/calcite-planner/src/main/java/org/apache/impala/calcite/service/CalciteSingleNodePlanner.java@103
PS3, Line 103:     // The "Sort" RelNode is used for limit and offset in 
addition to "order by" clauses.
> nit: can we add a comment mentioning that Calcite uses the Sort RelNode for
Done


http://gerrit.cloudera.org:8080/#/c/24079/3/java/calcite-planner/src/main/java/org/apache/impala/calcite/service/CalciteSingleNodePlanner.java@108
PS3, Line 108: n fetch != n
> Will this cast always succeed?
This cast should always succeed.  When the value is a numeric, it should be 
stored as a BigDecimal.

RexLiteral is also used for strings, and in that case, it would not be a 
BigDecimal.  But since this is a "fetch", it should only contain a numeric 
since it passed validation.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I9e84061b65f115ea65a9d2c2d40173843040ca0c
Gerrit-Change-Number: 24079
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-Reviewer: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Steve Carlin <[email protected]>
Gerrit-Comment-Date: Fri, 27 Mar 2026 03:11:42 +0000
Gerrit-HasComments: Yes

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