On 9 August 2016 at 15:42, Henning Verbeek <hankipa...@gmail.com> wrote:
> We're slowly migrating our application from Riak KV 1.4 to Riak KV > 2.1.4, and at the same time riak-java-client 1.4.x to riak-java-client > 2.0.6. We are doing this by adding seven new Riak KV 2.1 nodes to the > ring, and later removing the seven Riak KV 1.4 nodes from the ring. > For a few days, the cluster will consist of a mix. > Hi Henning, This plan will generate a lot of unnecessary data shuffling in the entire cluster. Each time a node is added or removed from the ring, the claim algorithm will re-assign partitions to/from all nodes. Please consider updating the existing nodes in place. For more information see the documentation[0]. Please let us know if any of the documentation is unclear, so that we can make it better. > [...] > Kind Regards, Magnus [0]: http://docs.basho.com/riak/kv/2.1.4/setup/upgrading/cluster/ -- Magnus Kessler Client Services Engineer Basho Technologies Limited Registered Office - 8 Lincoln’s Inn Fields London WC2A 3BP Reg 07970431
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