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https://issues.apache.org/jira/browse/CASSANDRA-10836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15053034#comment-15053034
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Jim Witschey commented on CASSANDRA-10836:
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I've changed the topic of this ticket slightly. We still don't know the
underlying cause of this kind of error, and some of the flapping upgrade_tests
don't involve data resurrection. E.g., {{whole_set_conditional_test}} recently
flapped once, finding a cell empty rather than finding resurrected data:
http://cassci.datastax.com/job/cassandra-3.0_dtest/429/testReport/junit/upgrade_tests.cql_tests/TestCQLNodes3RF3/whole_set_conditional_test/history/
> Data integrity flappers in upgrade_tests dtests
> -----------------------------------------------
>
> Key: CASSANDRA-10836
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10836
> Project: Cassandra
> Issue Type: Bug
> Reporter: Jim Witschey
> Priority: Critical
> Fix For: 3.0.x, 3.x
>
>
> A number of the {{upgrade_tests}} in dtest are flapping with data integrity
> bugs. For instance:
> http://cassci.datastax.com/view/cassandra-3.0/job/cassandra-3.0_dtest/422/testReport/upgrade_tests.cql_tests/TestCQLNodes3RF3/conditional_delete_test/history/
> http://cassci.datastax.com/view/cassandra-3.0/job/cassandra-3.0_dtest/421/testReport/upgrade_tests.cql_tests/TestCQLNodes3RF3/cas_and_list_index_test/history/
> This needs further digging to get good debug information; it could well be,
> e.g., a race condition in the test. I have not reproduced locally.
> /cc [~philipthompson]
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