Zoltan Borok-Nagy has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/18226 )

Change subject: IMPALA-10737: Optimize the number of Iceberg API Metadata 
requests
......................................................................


Patch Set 9:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/18226/9/fe/src/main/java/org/apache/impala/catalog/local/CatalogdMetaProvider.java
File fe/src/main/java/org/apache/impala/catalog/local/CatalogdMetaProvider.java:

http://gerrit.cloudera.org:8080/#/c/18226/9/fe/src/main/java/org/apache/impala/catalog/local/CatalogdMetaProvider.java@1948
PS9, Line 1948:   private static class IcebergMetaCacheKey extends 
VersionedTableCacheKey {
This calculates the same hash value as PartitionListCacheKey (and 
VersionedTableCacheKey).

We don't invoke loadPartitionList() for Iceberg tables so it doesn't cause a 
problem, but maybe it'd be safer to override hashCode(). Because some other 
load method might also start to use VersionedTableCacheKey and its hashCode() 
method.

So how about e.g.:

 @Override
 public int hashCode() {
   return Objects.hashCode(super.hashCode(), getClass());
 }



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I9e62a1fb9753ea1b022c7763047d9ccfd1d27d62
Gerrit-Change-Number: 18226
Gerrit-PatchSet: 9
Gerrit-Owner: Tamas Mate <[email protected]>
Gerrit-Reviewer: Gergely Fürnstáhl <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Tamas Mate <[email protected]>
Gerrit-Reviewer: Zoltan Borok-Nagy <[email protected]>
Gerrit-Comment-Date: Fri, 04 Mar 2022 11:53:51 +0000
Gerrit-HasComments: Yes

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