I believe that folks at FB have done some very very heavy-load ZK usage and could talk more about scale, but I suspect that the current releases of ZK would not scale to what you are looking for. Can you tell us more details about what you're trying to do?
C On Mon, Oct 15, 2012 at 9:23 PM, Rohan Desai <[email protected]>wrote: > Has any performance testing been done on !ZooKeeper to determine how many > concurrent watches are supported? The application I am considering using ZK > for would use ~4000000 znodes and set ~4000000 concurrent watches. All the > performance numbers I found on the ZK docs were reads/write per second. Are > there any numbers for concurrent watches? >
