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https://issues.apache.org/jira/browse/CASSANDRA-3483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13151499#comment-13151499
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Sylvain Lebresne commented on CASSANDRA-3483:
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I think it wouldn't be crazy and actually very (very) simple to add a new
nodetool command (rebuild?) that would basically have the node asks the other
replicas to stream all there data to him (for the correct ranges obviously). In
other words, a command that force the streaming part of bootstrap without all
the join ring part. Or another way to say is to have the streaming part of a
repair but without the validation part.
The method to add a new DC would be the same as today except that repair would
be replaced by this new operation.
> Support bringing up a new datacenter to existing cluster without repair
> -----------------------------------------------------------------------
>
> Key: CASSANDRA-3483
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3483
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 1.0.2
> Reporter: Chris Goffinet
>
> Was talking to Brandon in irc, and we ran into a case where we want to bring
> up a new DC to an existing cluster. He suggested from jbellis the way to do
> it currently was set strategy options of dc2:0, then add the nodes. After the
> nodes are up, change the RF of dc2, and run repair.
> I'd like to avoid a repair as it runs AES and is a bit more intense than how
> bootstrap works currently by just streaming ranges from the SSTables. Would
> it be possible to improve this functionality (adding a new DC to existing
> cluster) than the proposed method? We'd be happy to do a patch if we got some
> input on the best way to go about it.
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