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From Björn Hachmann <bjoern.hachm...@metrigo.de>
Subject Re: Replication to second data center with different number of nodes
Date Fri, 27 Mar 2015 12:11:11 GMT
2015-03-27 11:58 GMT+01:00 Sibbald, Charles <Charles.Sibbald@bskyb.com>:

> Cassandra’s Vnodes config


​Thank you. Yes, we are using vnodes! The num_token parameter controls the
number of vnodes assigned to a specific node.​

Might be I am seeing problems where are none.

Let me rephrase my question: How does Cassandra know it has to replicate
1/3 of all keys to each single node in the second DC? I can see two ways:
 1. It has to be configured explicitly.
 2. It is derived from the number of nodes available in the data center at
the time `nodetool rebuild` is started.

Kind regards
Björn

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