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From Peter Schuller <>
Subject Re: RFC: Cassandra Virtual Nodes
Date Mon, 19 Mar 2012 23:41:27 GMT
>> Using this ring bucket in the CRUSH topology, (with the hash function
>> being the identity function) would give the exact same distribution
>> properties as the virtual node strategy that I suggested previously,
>> but of course with much better topology awareness.
> I will have to re-read your orignal post. I seem to have missed something :)

I did, and I may or may not understand what you mean.

Are you comparing vnodes + hashing, with CRUSH + pre-partitioning by
hash + identity hash as you traverse down the topology tree?

/ Peter Schuller (@scode,

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