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https://issues.apache.org/jira/browse/CASSANDRA-8113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14169922#comment-14169922
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Jason Brown commented on CASSANDRA-8113:
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What happens when you have a network partition that lasts days (or a week or
two)? The heartbeat is updated, more or less, once a second. So the version of
a given node can increment by ~86400 per day (minus a few for GC collection,
thread scheduling, etc) . Depending on what you think a "too far in the future"
value is, if you set that high water mark too low, you will doom the cluster to
never converging, as well. If we want to consider a high water mark of
difference as a couple million, or so, that might be reasonable.
> 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
>
> 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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