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https://issues.apache.org/jira/browse/CASSANDRA-4641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13452096#comment-13452096
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Sylvain Lebresne commented on CASSANDRA-4641:
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I'm asking because if we do the 'num_tokens is only respected on first startup,
it means people that upgrade and later bootstrap a node would end up with the
new node have multiple tokens unless they explicitly set num_tokens. In other
words, that would still be pretty confusing for upgraders.
Imo, vnodes should be opt-in for upgraders in 1.2 and having new nodes get
multiple tokens by default does not accomplish that.
> Make upgrade to vnodes only happen on new installs
> --------------------------------------------------
>
> Key: CASSANDRA-4641
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4641
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Brandon Williams
> Assignee: Eric Evans
> Fix For: 1.2.0 beta 1
>
>
> We should make vnodes be the default for new installs, however, just enabling
> the 'num_tokens' parameter for upgrading is too flimsy. Instead, we should
> have a jmx/nodetool operation to do the upgrading.
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