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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-8113) Gossip should ignore generation numbers too far in the future
Date Tue, 14 Oct 2014 15:51:34 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-8113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14171097#comment-14171097
] 

Brandon Williams commented on CASSANDRA-8113:
---------------------------------------------

On the whole, +1, though I think MAX_VERSION_DIFFERENCE should be MAX_GENERATION_DIFFERENCE
so it's more correct, since we have both generations and versions in gossip.

> Gossip should ignore generation numbers too far in the future
> -------------------------------------------------------------
>
>                 Key: CASSANDRA-8113
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8113
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Richard Low
>            Assignee: Jason Brown
>         Attachments: 8113-v1.txt, 8113-v2.txt
>
>
> If a node sends corrupted gossip, it could set the generation numbers for other nodes
to arbitrarily large values. This is dangerous since one bad node (e.g. with bad memory) could
in theory bring down the cluster. Nodes should refuse to accept generation numbers that are
too far in the future.



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