Sam Lightfoot created CASSANDRA-21189:
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Summary: Fix flaky DTest: InProgressSequenceCoordinationTest
Key: CASSANDRA-21189
URL: https://issues.apache.org/jira/browse/CASSANDRA-21189
Project: Apache Cassandra
Issue Type: Bug
Components: Test/dtest/python
Reporter: Sam Lightfoot
Assignee: Sam Lightfoot
Fix For: 5.1
Tests often failing due to no seed no being up whilst non-seeds trying to join
the ring. Likely fix to start the seed node to ensure CMS initialization is
complete then allow other nodes in CCM to start in parallel.
Affects 5.1+ due to <=5.0 using [sequential
startup|https://github.com/apache/cassandra-dtest/blob/trunk/bootstrap_test.py#L254C30-L254C32].
On further analysis it appears two separate clusters form due to the seed node
not accepting messages during CMS initialization. Attached logs show the
independent clusters resulting from
_bootstrap_test.py::TestBootstrap::test_read_from_bootstrapped_node._
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