On Tue, May 29, 2012 at 5:42 PM, Dave Barr <[email protected]> wrote: > We'd like to upgrade our production ZK quorums to 3.4. > > Apart from https://issues.apache.org/jira/browse/ZOOKEEPER-1149, what > issues are there doing a rolling upgrade of ZK nodes from 3.3 to 3.4? > Can a mixed cluster work OK? I presume to reduce reelections we > should upgrade followers first, then upgrade the leader? Has anyone > done this?
You can do a rolling upgrade, a mixed cluster should be fine. (1149 is the only issue I know of) Patrick
