junrao commented on a change in pull request #8981:
URL: https://github.com/apache/kafka/pull/8981#discussion_r451224908



##########
File path: tests/kafkatest/tests/core/transactions_test.py
##########
@@ -47,7 +47,10 @@ def __init__(self, test_context):
         self.num_output_partitions = 3
         self.num_seed_messages = 100000
         self.transaction_size = 750
-        self.transaction_timeout = 40000
+        # This is reducing the transaction cleanup interval.
+        # IN hard_bounce mode, transaction is broke ungracefully. Hence, it 
produces unstable
+        # offsets which obstructs TransactionalMessageCopier from receiving 
position of group.
+        self.transaction_timeout = 5000

Review comment:
       @chia7712 : Thanks for the reply. That makes sense. Perhaps we can 
adjust the comment to make it clear that the hard bounce is for the client.




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