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https://issues.apache.org/jira/browse/CASSANDRA-15667?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benjamin Lerer updated CASSANDRA-15667:
---------------------------------------
          Fix Version/s: 3.11.7
                         3.0.21
          Since Version: 3.0.0
    Source Control Link: 
https://github.com/apache/cassandra/commit/a4b6deb906d846c2532174fcebfce0398b4b3c29
             Resolution: Fixed
                 Status: Resolved  (was: Ready to Commit)

Committed into 3.0 at a4b6deb906d846c2532174fcebfce0398b4b3c29 and merged into 
3.11 and trunk

> 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
>            Assignee: Massimiliano Tomassi
>            Priority: Normal
>             Fix For: 3.0.21, 3.11.7, 4.0-alpha
>
>         Attachments: log_bootstrap_resumable
>
>
> {{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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