there aren't any limits on the number of znodes, it's just limited by
your memory. there are two things (probably more :) to keep in mind:
1) the 1M limit also applies to the children list. you can't grow the
list of children to more than 1M (the sum of the names of all of the
children)
See this recent benchmark I did: http://bit.ly/4ekN8G
In this case I have 20 clients doing 10k zodes each (200k znodes of size
100 bytes each with 1million watches). However I have tested similar
setup with 400 clients (so 4 million znodes and 20million watches).
As Ben mentioned there are