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https://issues.apache.org/jira/browse/IGNITE-4499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15780169#comment-15780169
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Alexei Scherbakov commented on IGNITE-4499:
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Sadly I have no reproducer at the moment.
> TcpDiscoverySpi is not reliable in some network split scenarios.
> ----------------------------------------------------------------
>
> Key: IGNITE-4499
> URL: https://issues.apache.org/jira/browse/IGNITE-4499
> Project: Ignite
> Issue Type: Bug
> Components: general
> Affects Versions: 1.6
> Reporter: Alexei Scherbakov
> Fix For: 2.0
>
>
> Where is a possible caveat in current discovery implementation using ring of
> nodes.
> Imagine grid consisting of nodes A B C D
> Let them form the ring:
> A-B-C-D-A
> If network connectivity issues will arise between nodes A-C and B-D
> discovery spi will never know it and will continue to assume the topology is
> valid.
> On other side, TcpCommunicationSpi will try to run transaction on this
> topology and never will succeed.
> We must drop nodes from topology on communication spi errors.
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