[KAFKA-17681] Fix unstable consumer_test.py#test_fencing_static_consumer

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Cannot Reproduce
• Fix Version/s: 4.0.0
• Component/s: clients, consumer, system tests
• Labels: flaky-test kip-848-client-support
• Assignee: Chia-Ping Tsai
• Reporter: Chia-Ping Tsai
• Created: 02/Oct/24 14:42
• Updated: 13/Nov/24 00:28
• Resolved: 13/Nov/24 00:28

Description

    AssertionError('Static consumers attempt to join with instance id in use should not cause a rebalance.')
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/dist-packages/ducktape/tests/runner_client.py", line 186, in _do_run
    data = self.run_test()
  File "/usr/local/lib/python3.9/dist-packages/ducktape/tests/runner_client.py", line 246, in run_test
    return self.test_context.function(self.test)
  File "/usr/local/lib/python3.9/dist-packages/ducktape/mark/_mark.py", line 433, in wrapper
    return functools.partial(f, *args, **kwargs)(*w_args, **w_kwargs)
  File "/opt/kafka-dev/tests/kafkatest/tests/client/consumer_test.py", line 359, in test_fencing_static_consumer
    assert num_rebalances == consumer.num_rebalances(), "Static consumers attempt to join with instance id in use should not cause a rebalance. before: " + str(num_rebalances) + " after: " + str(consumer.num_rebalances())
AssertionError: Static consumers attempt to join with instance id in use should not cause a rebalance.