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https://issues.apache.org/jira/browse/CASSANDRA-6125?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brandon Williams updated CASSANDRA-6125:
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Reviewer: Jason Brown
> Race condition in Gossip propagation
> ------------------------------------
>
> Key: CASSANDRA-6125
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6125
> Project: Cassandra
> Issue Type: Bug
> Reporter: Sergio Bossa
> Assignee: Brandon Williams
> Fix For: 2.0.11
>
> Attachments: 6125.txt
>
>
> Gossip propagation has a race when concurrent VersionedValues are created and
> submitted/propagated, causing some updates to be lost, even if happening on
> different ApplicationStatuses.
> That's what happens basically:
> 1) A new VersionedValue V1 is created with version X.
> 2) A new VersionedValue V2 is created with version Y = X + 1.
> 3) V2 is added to the endpoint state map and propagated.
> 4) Nodes register Y as max version seen.
> 5) At this point, V1 is added to the endpoint state map and propagated too.
> 6) V1 version is X < Y, so nodes do not ask for his value after digests.
> A possible solution would be to propagate/track per-ApplicationStatus
> versions, possibly encoding them to avoid network overhead.
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