[GitHub] [kafka] satishd commented on a change in pull request #11058: KAFKA-12802 Added a file based cache for consumed remote log metadata for each partition to avoid consuming again incase of broker restarts.

[GitBox]

satishd commented on a change in pull request #11058:
URL: https://github.com/apache/kafka/pull/11058#discussion_r711986569



##########
File path: 
storage/src/main/java/org/apache/kafka/server/log/remote/metadata/storage/RemoteLogMetadataCache.java
##########
@@ -161,53 +162,46 @@ public void 
updateRemoteLogSegmentMetadata(RemoteLogSegmentMetadataUpdate metada
                 throw new IllegalArgumentException("metadataUpdate: " + 
metadataUpdate + " with state " + RemoteLogSegmentState.COPY_SEGMENT_STARTED +
                                                    " can not be updated");
             case COPY_SEGMENT_FINISHED:
-                handleSegmentWithCopySegmentFinishedState(metadataUpdate, 
existingMetadata);
+                
handleSegmentWithCopySegmentFinishedState(existingMetadata.createWithUpdates(metadataUpdate));
                 break;
             case DELETE_SEGMENT_STARTED:
-                handleSegmentWithDeleteSegmentStartedState(metadataUpdate, 
existingMetadata);
+                
handleSegmentWithDeleteSegmentStartedState(existingMetadata.createWithUpdates(metadataUpdate));
                 break;
             case DELETE_SEGMENT_FINISHED:
-                handleSegmentWithDeleteSegmentFinishedState(metadataUpdate, 
existingMetadata);
+                
handleSegmentWithDeleteSegmentFinishedState(existingMetadata.createWithUpdates(metadataUpdate));
                 break;
             default:
                 throw new IllegalArgumentException("Metadata with the state " 
+ targetState + " is not supported");
         }
     }
 
-    private void 
handleSegmentWithCopySegmentFinishedState(RemoteLogSegmentMetadataUpdate 
metadataUpdate,
-                                                           
RemoteLogSegmentMetadata existingMetadata) {
-        log.debug("Adding remote log segment metadata to leader epoch mappings 
with update: [{}]", metadataUpdate);
-
-        doHandleSegmentStateTransitionForLeaderEpochs(existingMetadata,
+    private void 
handleSegmentWithCopySegmentFinishedState(RemoteLogSegmentMetadata 
remoteLogSegmentMetadata) {
+        doHandleSegmentStateTransitionForLeaderEpochs(remoteLogSegmentMetadata,

Review comment:
       It is not a bug. Code is very similar but it is a minor refactoring to 
pass the updated RemoteLogSegmentMetadata instance.
   




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