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https://issues.apache.org/jira/browse/CASSANDRA-16518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17497361#comment-17497361
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Stefan Miklosovic commented on CASSANDRA-16518:
-----------------------------------------------
After my analysis I think it is enough if we just filter out versions which are
null from here
{code}
boolean enforceV3Cap = SystemKeyspace.loadPeerVersions()
.values()
.stream()
.anyMatch(v ->
v.compareTo(MIN_VERSION_FOR_V4) < 0);
{code}
I have tried it manually and it will not hit that bug again.
This should be done for 3.0 and 3.11. I ll provide patch soon.
> Node restart during joining sets protocol version to V3
> -------------------------------------------------------
>
> Key: CASSANDRA-16518
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16518
> Project: Cassandra
> Issue Type: Bug
> Components: Messaging/Client
> Reporter: Joseph Clay
> Assignee: Stefan Miklosovic
> Priority: Normal
> Fix For: 3.11.x
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> While joining nodes to a cluster, an old node crashed. The old node was
> recovered however clients (datastax java) refused to connect to it.
> The driver error:
> {noformat}
> Detected added or restarted Cassandra host /<ip>:<port> but ignoring it since
> it does not support the version V4 of the native protocol which is currently
> in use.{noformat}
> In the recovered node cassandra logs:
> {noformat}
> INFO o.a.c.transport.ConfiguredLimit Detected peers which do not fully
> support protocol V4. Capping max negotiable version to V3{noformat}
> I confirmed that ALL the nodes in the cluster, joining or otherwise, were
> apache-cassandra-3.11.6 so that error message was rather confusing.
> Eventually after digging through the code we got to the bottom of the issue:
> https://issues.apache.org/jira/browse/CASSANDRA-15193 adds a check for node
> version, which reverts the protocol version to V3 if any peer fails the
> version check. Joining nodes have NULL for their version in the peers table,
> which fails the version check.
>
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