You can certainly serve more reads with a 4th node, but I'm not sure what you mean by "it won't have a voting role". It still participates in voting for leaders as do all non-observers regardless of whether it is an even or odd number. With zookeeper there is no voting on each transaction, only leader changes.
-Dave Wright On Wed, Aug 25, 2010 at 6:22 PM, Todd Nine <t...@spidertracks.co.nz> wrote: > Do I get any read performance increase (similar to an observer) since > the node will not have a voting role? > >
