[Zookeeper-user] Reconfiguring Zookeeper in production

[Austin S. <au...@co...>]

We are using Zookeeper to implement consistent hashing, and need to be  
able to add or remove hosts from the Zookeeper service without  
interrupting its functionality.

According to http://zookeeper.wiki.sourceforge.net/ZooKeeperConfiguration 
:
"Every machine that is part of the ZooKeeper service needs to know  
about every other machine. So, we need to have a list of machines in  
the configuration file."

Can we add a single Zookeeper server to the service with an expanded  
host list without interrupting the proper functioning of the service?  
The old servers will each have host list s_1, ..., s_k, and the new  
server s_k+1 will have host list s_1, ..., s_k, s_k+1. Now we need to  
restart the rest of the servers one by one from s_1 to s_k with the  
new host list s_1, ..., s_k, s_k+1. Is this a violation of the service  
specification?

Thanks,

Austin