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From "Sylvain Lebresne (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3483) Support bringing up a new datacenter to existing cluster without repair
Date Thu, 17 Nov 2011 09:18:52 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13151933#comment-13151933
] 

Sylvain Lebresne commented on CASSANDRA-3483:
---------------------------------------------

So you're proposing to add support for bootstrapping multiple nodes together. I'm not against
that, it would be nice and that would give you 90% of what this ticket is about (you'd have
to add the ability to multi-boostrap *and* add a DC/augment the replication faction at the
same time). But it is orders of magnitude more complicated than what I'm suggesting. Which
is not a problem in itself given it's a broader solution, but it means we'll have multi-node
boostrap at best for 1.1, while I'm pretty sure I can get the 'rebuild' command wrote in like
an hour (and I see no reason why it couldn't be put in the 1.0 series).


                
> 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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