Check this page:
http://zookeeper.apache.org/doc/r3.3.3/zookeeperProgrammers.html#ch_zkWatches
*One-time trigger*
One watch event will be sent to the client when the data has changed. For
example, if a client does a getData("/znode1", true) and later the data for
/znode1 is changed or deleted, the client will get a watch event for
/znode1. If /znode1 changes again, no watch event will be sent unless the
client has done another read that sets a new watch.
On Fri, Nov 4, 2011 at 10:43 AM, nileader <[email protected]> wrote:
> Will zookeeper server merge some watcher notifications when client update
> data of znode frequent!
>
