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https://issues.apache.org/jira/browse/CASSANDRA-16213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17231934#comment-17231934
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David Capwell commented on CASSANDRA-16213:
-------------------------------------------
Finished assassinate and made sure to flesh out the different cases I could
see. org.apache.cassandra.gms.EndpointState#isEmpty does need to check for
status in order for assassinate with this patch.
If you stop all nodes and bring up all but the host to remove, then assassinate
the node to remove, it will still be "empty" based off version, but will have a
status. If we do not check the status when we check for empty, we would then
treat this endpoint as normal and move on, which isn't correct as its in the
LEFT state.
[~paulo] I added
org.apache.cassandra.distributed.test.hostreplacement.AssassinatedEmptyNodeTest
to flesh this case out if you want to take a closer look. EndpointState.isEmpty
is only use in one spot now since we removed the filter, so feel its still best
to check the state to make sure it is this specific case.
> Cannot replace_address /X because it doesn't exist in gossip
> ------------------------------------------------------------
>
> Key: CASSANDRA-16213
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16213
> Project: Cassandra
> Issue Type: Bug
> Components: Cluster/Gossip, Cluster/Membership
> Reporter: David Capwell
> Assignee: David Capwell
> Priority: Normal
> Fix For: 4.0-beta
>
>
> We see this exception around nodes crashing and trying to do a host
> replacement; this error appears to be correlated around multiple node
> failures.
> A simplified case to trigger this is the following
> *) Have a N node cluster
> *) Shutdown all N nodes
> *) Bring up N-1 nodes (at least 1 seed, else replace seed)
> *) Host replace the N-1th node -> this will fail with the above
> The reason this happens is that the N-1th node isn’t gossiping anymore, and
> the existing nodes do not have its details in gossip (but have the details in
> the peers table), so the host replacement fails as the node isn’t known in
> gossip.
> This affects all versions (tested 3.0 and trunk, assume 2.2 as well)
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