junrao commented on code in PR #19964: URL: https://github.com/apache/kafka/pull/19964#discussion_r2154081661
########## clients/src/main/java/org/apache/kafka/clients/producer/internals/Sender.java: ########## @@ -855,7 +860,7 @@ private void sendProduceRequest(long now, int destination, short acks, int timeo if (batches.isEmpty()) return; - final Map<TopicPartition, ProducerBatch> recordsByPartition = new HashMap<>(batches.size()); + final Map<TopicIdPartition, ProducerBatch> recordsByPartition = new HashMap<>(batches.size()); Map<String, Uuid> topicIds = topicIdsForBatches(batches); Review Comment: It's true that `Sender::topicIdsForBatches` could return zero topicId in rare cases. It seems that we could just pass along the mapping to zero topicId when handling the produce response. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org