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From aaron morton <>
Subject Re: Backup and restore between different node-sized clusters
Date Thu, 09 May 2013 22:48:38 GMT
Special case if you have 3 nodes and RF 3 you can copy the files to each node and use nodetool


Aaron Morton
Freelance Cassandra Consultant
New Zealand


On 9/05/2013, at 11:20 AM, Jonathan Ellis <> wrote:

> You want to use sstableloader when the cluster sizes are different; it
> will stream things to the right places in the new one.
> On Wed, May 8, 2013 at 6:03 PM, Ron Siemens <> wrote:
>> I have a 3-node cluster in production and a single-node development cluster.  I tested
snapshotting a column family from the 3-node production cluster, grouping the files together,
and restoring onto my single node development system.  That worked fine.  Can I go the other
direction?  It's not easy for me to test in that direction: I'll get the chance at some point
but would like to hear if you've done this.
>> If I just put the snapshot from the single node cluster on one of the nodes from
the 3-node cluster, and do a JMX loadNewSSTables on that node, will the data load correctly
into the 3-nodes?  Or is something more complex involved?
>> FYI, I'm following the instructions below, but only doing per column family backup
and restore.
>> Thanks,
>> Ron
> -- 
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder,
> @spyced

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