Does this mean that, when I am processing one event, then the zookeeper
won't be firing another event. It does so only when the first event is
completely processed & returned by the callback object. Am I correct in my

Thanks & Regards,

On Mon, Jul 19, 2010 at 2:40 PM, Dave Wright <> wrote:

> There is a single thread used to fire notification callbacks, your
> callbacks will be called in order one at a time and you only need to
> worry about synchronizing state with the rest of your code.
> -Dave Wright
> On Mon, Jul 19, 2010 at 5:37 PM, Srikanth Bondalapati:
> <> wrote:
> > Hi,
> >
> > I have a class (X) that implements the Watcher Interface. Consider, an
> > instance of 'X' is registered as a callback object for different Znode
> > changes. Now, If there are several simultaneous changes that happen on
> these
> > registered znodes, then will these events be fired by the zookeeper to
> > callback object sequentially or should I have to synchronize the
> process()
> > method of Watcher interface in order to handle these events sequentially?
> > Suppose, I have synchronized the process method(), then will the events
> > fired by zookeeper be missed by the callback object when some other event
> is
> > being processed? Or, does the zookeeper ensures that all the events are
> > finally reached and handled by the callback object?
> >
> > Thanks & Regards,
> > Srikanth.
> >

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