chia7712 commented on a change in pull request #10673: URL: https://github.com/apache/kafka/pull/10673#discussion_r630800233
########## File path: tests/kafkatest/services/streams.py ########## @@ -466,6 +466,15 @@ def __init__(self, test_context, kafka, processingMode): "org.apache.kafka.streams.tests.BrokerCompatibilityTest", processingMode) + def prop_file(self): + properties = {streams_property.STATE_DIR: self.PERSISTENT_ROOT, + streams_property.KAFKA_SERVERS: self.kafka.bootstrap_servers(), + # the old broker (< 2.4) does not support configuration replication.factor=-1 + "replication.factor": 1} Review comment: > Should we set it to 3 instead? IIRC, we run all system tests with 3 brokers? not really. `streams_broker_compatibility_test.py` run test with single broker ( https://github.com/apache/kafka/blob/trunk/tests/kafkatest/tests/streams/streams_broker_compatibility_test.py#L45) > Might be better to just set it in the Java code instead as it's easier to find and read, and I believe most other configs are set there. I prefer to change python code rather than java code since the number of brokers is connected to replication refactor. If we add hardcode (i.e `replication refactor = 1`) in the java class, it is hard to change both of them in python. > I think this test runs the StreamsSmokeTest? BrokerCompatibilityTest (https://github.com/apache/kafka/blob/trunk/tests/kafkatest/services/streams.py#L466) -- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org