If you have two servers with the same myid, two servers will identify themselves as the 'same' machine X in a ZooKeeper ensemble. This id is used to map onto a hostname / port pair where messages for a given server are sent. Assuming a consistent quorum specification across all machines, messages for server X will only go to one machine and the other will think itself partitioned from the network.
Servers need ids to distinguish themselves from other servers in order to break symmetry and successfully elect a leader. Henry On 27 February 2010 23:06, Qian Ye <yeqian....@gmail.com> wrote: > myid is used to identify your service instance, with its help, it is > possible to start more than one Zookeeper service on one computer. If the > configuration of myid is wrong, the service can not be started properly. > > On Sun, Feb 28, 2010 at 11:39 AM, Avinash Lakshman < > avinash.laksh...@gmail.com> wrote: > > > Why is this important? What breaks down if I have 2 servers with the same > > myId? > > > > Cheers > > A > > > > > > -- > With Regards! > > Ye, Qian > -- Henry Robinson Software Engineer Cloudera 415-994-6679
