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https://issues.apache.org/jira/browse/CASSANDRA-16644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17341720#comment-17341720
 ] 

Berenguer Blasi commented on CASSANDRA-16644:
---------------------------------------------

I went ahead and gave the multiplexer one more go. I got plenty of 
[failures|https://app.circleci.com/pipelines/github/bereng/cassandra/281/workflows/2afcd87f-ce10-4495-9153-a362e198d3cc/jobs/2691/artifacts]
 but the ones I could look at were legit. We can see 
[here|https://circle-production-customer-artifacts.s3.amazonaws.com/picard/5e9576564660060baefcf188/6098c61a1823b752f1333400-0-build/artifacts/dtest/stdout.txt?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20210510T064321Z&X-Amz-SignedHeaders=host&X-Amz-Expires=60&X-Amz-Credential=AKIAJR3Q6CR467H7Z55A%2F20210510%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Signature=f108cc3b72f8eb9728c8c703b518ea0fed001a39ef1a8f3537be43c4e80b3396]
 the failure from {{2021-05-10 05:39:37,970}} it's indeed missing the message 
when you track down the log 
[file|https://circle-production-customer-artifacts.s3.amazonaws.com/picard/5e9576564660060baefcf188/6098c61a1823b752f1333400-0-build/artifacts/dtest_logs/1620625235394_test_move_backwards_and_cleanup%5B2-10%5D/node4.log?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20210510T064822Z&X-Amz-SignedHeaders=host&X-Amz-Expires=59&X-Amz-Credential=AKIAJR3Q6CR467H7Z55A%2F20210510%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Signature=6915219122fd8bd306dc0ae23ecac80f9ae1193254d97a2d51b9e04c9220c64c].
 So I am going to increase timeout and see if I can get some good failures.

> Flaky TestTransientReplicationRing.test_move_backwards_and_cleanup
> ------------------------------------------------------------------
>
>                 Key: CASSANDRA-16644
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16644
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Test/dtest/python
>            Reporter: Berenguer Blasi
>            Assignee: Berenguer Blasi
>            Priority: Normal
>             Fix For: 4.0-rc
>
>
> Failure 
> [here|https://ci-cassandra.apache.org/job/Cassandra-trunk/472/testReport/junit/dtest-novnode.transient_replication_ring_test/TestTransientReplicationRing/test_move_backwards_and_cleanup/]
> {noformat}
> Error Message
> ccmlib.node.TimeoutError: 27 Apr 2021 00:01:00 [node4] after 90.11/90 seconds 
> Missing: ['Starting listening for CQL clients'] not found in system.log: 
> Tail: INFO  [main] 2021-04-26 23:59:22,590 YamlConfigura
> Stacktrace
> self = <transient_replication_ring_test.TestTransientReplicationRing object 
> at 0x7f66c51ebd90>
>     @flaky(max_runs=1)
>     @pytest.mark.no_vnodes
>     def test_move_backwards_and_cleanup(self):
>         """Test moving a node backwards without moving past a neighbor 
> token"""
>         move_token = '00005'
>         expected_after_move = [gen_expected(range(0, 6), range(31, 40)),
>                                gen_expected(range(0, 21, 2)),
>                                gen_expected(range(1, 6, 2), range(6, 31)),
>                                gen_expected(range(7, 20, 2), range(21, 40))]
>         expected_after_repair = [gen_expected(range(0, 6), range(31, 40)),
>                                  gen_expected(range(0, 21)),
>                                  gen_expected(range(6, 31)),
>                                  gen_expected(range(21, 40))]
> >       self.move_test(move_token, expected_after_move, expected_after_repair)
> transient_replication_ring_test.py:333: 
> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
> _ 
> transient_replication_ring_test.py:235: in move_test
>     node4.start(wait_for_binary_proto=True)
> transient_replication_ring_test.py:50: in new_start
>     return old_start(*args, **kwargs)
> ../venv/src/ccm/ccmlib/node.py:901: in start
>     self.wait_for_binary_interface(from_mark=self.mark)
> ../venv/src/ccm/ccmlib/node.py:687: in wait_for_binary_interface
>     self.watch_log_for("Starting listening for CQL clients", **kwargs)
> ../venv/src/ccm/ccmlib/node.py:588: in watch_log_for
>     TimeoutError.raise_if_passed(start=start, timeout=timeout, node=self.name,
> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
> _ 
> start = 1619481570.0236456, timeout = 90
> msg = "Missing: ['Starting listening for CQL clients'] not found in 
> system.log:\nTail: INFO  [main] 2021-04-26 23:59:22,590 YamlConfigura"
> node = 'node4'
>     @staticmethod
>     def raise_if_passed(start, timeout, msg, node=None):
>         if start + timeout < time.time():
> >           raise TimeoutError.create(start, timeout, msg, node)
> E           ccmlib.node.TimeoutError: 27 Apr 2021 00:01:00 [node4] after 
> 90.11/90 seconds Missing: ['Starting listening for CQL clients'] not found in 
> system.log:
> E           Tail: INFO  [main] 2021-04-26 23:59:22,590 YamlConfigura
> ../venv/src/ccm/ccmlib/node.py:56: TimeoutError
> {noformat}



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