guozhangwang commented on a change in pull request #11362:
URL: https://github.com/apache/kafka/pull/11362#discussion_r718738299



##########
File path: 
clients/src/main/java/org/apache/kafka/clients/producer/KafkaProducer.java
##########
@@ -704,11 +704,14 @@ public void sendOffsetsToTransaction(Map<TopicPartition, 
OffsetAndMetadata> offs
         throwIfInvalidGroupMetadata(groupMetadata);
         throwIfNoTransactionManager();
         throwIfProducerClosed();
-        long start = time.nanoseconds();
-        TransactionalRequestResult result = 
transactionManager.sendOffsetsToTransaction(offsets, groupMetadata);
-        sender.wakeup();
-        result.await(maxBlockTimeMs, TimeUnit.MILLISECONDS);
-        producerMetrics.recordSendOffsets(time.nanoseconds() - start);
+
+        if (offsets.isEmpty()) {

Review comment:
       Ah my bad..
   
   I was trying to fix both on the caller (streams) side as well as the callee 
(producer) side, but the callee part was added in a last minute and obviously I 
need some coffee at that time already.




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