nastra commented on code in PR #7283:
URL: https://github.com/apache/iceberg/pull/7283#discussion_r1159547571


##########
nessie/src/main/java/org/apache/iceberg/nessie/NessieTableOperations.java:
##########
@@ -152,6 +160,9 @@ protected void doCommit(TableMetadata base, TableMetadata 
metadata) {
       client.commitTable(base, metadata, newMetadataLocation, table, key);
       delete = false;
     } catch (NessieConflictException ex) {
+      if (ex instanceof NessieReferenceConflictException) {
+        handleReferenceConflictException((NessieReferenceConflictException) 
ex);

Review Comment:
   threading through the code one wouldn't immediately expect 
`handleReferenceConflictException` to throw an exception. I think it would be 
better if `handleReferenceConflictException` would return 
`Optional<RuntimeException>`. 
   Then the call in the `catch` clause could be `throw 
handleReferenceConflictException(ex).orElseGet(() -> new 
CommitFailedException(..))`.
   



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