There are instructions on the wiki: 
http://wiki.basho.com/Secondary-Indexes.html#Migrating-an-Existing-Cluster-(Method-One)

Basically, you will have each node leave the cluster, switch the backend, and 
then rejoin. The process is something like this:

1) Issue `riak-admin leave` and wait for all transfers to complete
2) `riak stop`
3) Change the backend to the `riak_kv_eleveldb_backend`
4) `riak start` and `riak-admin join <a_node>`
5) Repeat for each node in the cluster


Ian Plosker
Developer Advocate
Basho Technologies


On Sep 30, 2011, at 10:41 PM, 54chen wrote:

> Congratulations!
> 
> Can you give me an example of how the 0.14.2(bitcask) upgrade to 1.0(levelDB)?
> 
> 
> 
> 2011/10/1 Alexander Sicular <sicul...@gmail.com>
> Awesome!
> 
> Already got it in place on my mac and ubuntu dev boxes. Smooth.
> 
> -Alexander Sicular
> 
> @siculars
> http://siculars.posterous.com
> 
> On Sep 30, 2011, at 4:31 PM, David Smith wrote:
> 
> > Hi All,
> >
> > I am very pleased to announce that Riak 1.0 is tagged and officially
> > ready for downloading.
> >
> > Pre-built installations and source tarballs are available at:
> >
> > http://downloads.basho.com/riak/CURRENT
> >
> > Release notes are here:
> >
> > https://github.com/basho/riak/blob/1.0/RELEASE-NOTES.org
> >
> > There is also a blog post about the release here:
> >
> > http://blog.basho.com/2011/09/30/Riak-1-dot-0-is-Official/
> >
> > 1.0 has been two years and 15 releases in the making. Thank you all
> > for being a part of this project and wonderful community. We couldn't
> > have done it without you.
> >
> > Sincerely,
> >
> > D.
> >
> > --
> > Dave Smith
> > Director, Engineering
> > Basho Technologies, Inc.
> > diz...@basho.com
> >
> > _______________________________________________
> > riak-users mailing list
> > riak-users@lists.basho.com
> > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
> 
> 
> _______________________________________________
> riak-users mailing list
> riak-users@lists.basho.com
> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
> 
> 
> 
> -- 
> -
> http://www.54chen.com 
> http://twitter.com/54chen
> _______________________________________________
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> riak-users@lists.basho.com
> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com

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