> What is the order of the ServiceInstances returned by > ServiceDiscovery#queryForInstances(String name)? Whatever order ZooKeeper's getChildren() returns it. Which, AFAIK, is undefined.
> Also what's the order returned by ServiceCache#getInstances()? Because it uses PatchChildrenCache internally, this returns instances sorted by path. > P.S. Curator has made my work with ZooKeeper much easier :) thanks! :) On Aug 20, 2013, at 2:44 PM, Robert Kanter <[email protected]> wrote: > Hi, > > What is the order of the ServiceInstances returned by > ServiceDiscovery#queryForInstances(String name)? Also what's the order > returned by ServiceCache#getInstances()? > > The context is I have some IDs and I want to assign them to different > instances on the service discovery based on modding the ID by the number of > ServiceInstances (in other words, each ID will be assigned to exactly one > ServiceInstance). I'd like to use the order in which the services registered > with ZooKeeper as their index (that is, the first service that registers is > 0, the second is 1, etc). I can accomplish this by checking the > ServiceInstance#getRegistrationTimeUTC() for each ServiceInstance to > determine the ordering, but it would be easier and faster if the returned > Collection was already in that order (which is what I'm hoping). > > thanks > - Robert > > > P.S. Curator has made my work with ZooKeeper much easier :) thanks!
