[jira] [Created] (CASSANDRA-15667) StreamResultFuture check for completeness is inconsistent, leading to races

["Sergio Bossa (Jira)" <ji...@apache.org>]

Sergio Bossa created CASSANDRA-15667:
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             Summary: StreamResultFuture check for completeness is inconsistent, leading to races
                 Key: CASSANDRA-15667
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15667
             Project: Cassandra
          Issue Type: Bug
          Components: Legacy/Streaming and Messaging
            Reporter: Sergio Bossa


{{StreamResultFuture#maybeComplete()}} uses {{StreamCoordinator#hasActiveSessions()}} to determine if all sessions are completed, but then accesses each session state via {{StreamCoordinator#getAllSessionInfo()}}: this is inconsistent, as the former relies on the actual {{StreamSession}} state, while the latter on the {{SessionInfo}} state, and the two are concurrently updated with no coordination whatsoever.

This leads to races, i.e. apparent in some dtest spurious failures, such as {{TestBootstrap.resumable_bootstrap_test}} in CASSANDRA-15614 cc [~e.dimitrova].



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