Multiple ZooKeeper client instances

[Satish Bhatti]

If my application has several objects who are using ZooKeeper for entirely
unrelated reasons, is it recommended to create one ZooKeeper client instance
and share it, or to create one per object?  Do the ZooKeeper client
instances have a lot of overhead?  I am thinking that having one instance
per object will lead to simpler code in terms of handling Session
expirations.
Satish