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https://issues.apache.org/jira/browse/CASSANDRA-21185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sam Lightfoot updated CASSANDRA-21185:
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Component/s: Test/dtest/python
(was: Transactional Cluster Metadata)
> Fix flaky DTest: bootstrap_test_*
> ---------------------------------
>
> Key: CASSANDRA-21185
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21185
> Project: Apache Cassandra
> Issue Type: Bug
> Components: Test/dtest/python
> Reporter: Sam Lightfoot
> Assignee: Sam Lightfoot
> Priority: Normal
> Fix For: 5.1
>
> Attachments: split_brain_logs.txt
>
>
> 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 split-brain is occurring leading to two
> separate clusters being formed 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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