chia7712 commented on code in PR #22257:
URL: https://github.com/apache/kafka/pull/22257#discussion_r3224358555


##########
share-coordinator/src/main/java/org/apache/kafka/coordinator/share/ShareCoordinatorShard.java:
##########
@@ -929,7 +929,7 @@ private 
Optional<CoordinatorResult<InitializeShareGroupStateResponseData, Coordi
         Optional<CoordinatorMetadataImage.TopicMetadata> topicMetadataOp = 
metadataImage.topicMetadata(topicId);
         if (topicMetadataOp.isEmpty() ||
             topicMetadataOp.get().partitionCount() <= partitionId) {
-            log.error("Topic/TopicPartition not found in metadata image.");
+            log.error("Topic or partition not found in metadata image when 
initializing: {}:null-{}.", topicId, partitionId);

Review Comment:
   Maybe we should try our best to resolve the topic name here?
   ```java
               log.error("Topic or partition not found in metadata image when 
initializing: {}:{}-{}.", topicId,
                   
topicMetadataOp.map(CoordinatorMetadataImage.TopicMetadata::name).orElse("null"),
 partitionId);
   ```



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