Zoltan Borok-Nagy has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/24505 )

Change subject: IMPALA-15083: [Part 1] Add Parquet UUID read support for 
Iceberg tables
......................................................................


Patch Set 2:

(1 comment)

Thanks for working on this!

http://gerrit.cloudera.org:8080/#/c/24505/2/be/src/exec/parquet/parquet-column-readers.cc
File be/src/exec/parquet/parquet-column-readers.cc:

http://gerrit.cloudera.org:8080/#/c/24505/2/be/src/exec/parquet/parquet-column-readers.cc@899
PS2, Line 899:   // Allocate 36 bytes for the UUID string from the data page 
pool.
             :   // Mark keep_data_page_pool_ so the allocation survives.
We shouldn't allocate anything here, just copy the 16 bytes to the tuple's UUID 
slot. I.e. we should treat UUID like a CHAR(16). This way we save a lot of 
memory and unnecessary allocations, and also avoid pointer chasing.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I4157c002e80677d27d8fd060c7bfa07b95d7c78f
Gerrit-Change-Number: 24505
Gerrit-PatchSet: 2
Gerrit-Owner: Arnab Karmakar <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Zoltan Borok-Nagy <[email protected]>
Gerrit-Comment-Date: Thu, 25 Jun 2026 21:08:24 +0000
Gerrit-HasComments: Yes

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