[jira] [Commented] (CASSANDRA-15335) Node can corrupt gossip state and become unreplaceable

["Marcus Eriksson (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-15335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16944263#comment-16944263 ] 

Marcus Eriksson commented on CASSANDRA-15335:
---------------------------------------------

+1

> Node can corrupt gossip state and become unreplaceable
> ------------------------------------------------------
>
>                 Key: CASSANDRA-15335
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15335
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Cluster/Gossip
>            Reporter: Blake Eggleston
>            Assignee: Blake Eggleston
>            Priority: Normal
>             Fix For: 3.0.19, 3.11.5, 4.0
>
>
> In {{StorageService#prepareToJoin}}, a starting node first sends out an endpoint state without any tokens. Later, in {{StorageService#finishJoiningRing}} it sends out an endpoint state _with_ it’s tokens. If that node dies between these 2 events and cannot be restarted due to some unrecoverable error, the ring’s gossip state will be missing tokens for that node. This won’t cause any immediate data loss since TMD is populated from system.peers, but it will prevent a replacement node from associating that address with it’s tokens and replacing it. It could also cause data loss if other nodes are added to the ring and don’t see an owned token where there should be one.



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