On Fri, Sep 20, 2013 at 9:24 AM, Jayadev Jayaraman <jdisal...@gmail.com>wrote:
> As a follow-up, is operating a Cassandra cluster with machines on multiple > racks and vnodes bound to cause load imbalance ? Shouldn't token-ranges > assigned to individual machines via their vnodes be approximately balanced > ? We're otherwise unable to explain why this imbalance occurs. ( it > shouldn't be the fault of the Murmur3 partitioner which guarantees a > uniform distribution of keys across token-ranges according to the doc. ) > https://issues.apache.org/jira/browse/CASSANDRA-4658 https://issues.apache.org/jira/browse/CASSANDRA-4123 tl;dr : Yes, vnodes makes the imbalance factor slightly greater, but in practice it "shouldn't" be significant. If you are experiencing significant imbalance, one or both of those tickets may be an appropriate forum to describe your experience. =Rob
