Thank you all
I have another question。
I set a watch （getData）on a znode。the getData api said ：
<p>
* If the watch is non-null and the call is successful (no exception is
* thrown), a watch will be left on the node with the given path. The
watch
* will be triggered by a successful operation that sets data on the
node, or
* deletes the node.
* <p>
I used the method “Is there an easy way to expire a session for testing?” to
imitate the expire
（in https://cwiki.apache.org/confluence/display/ZOOKEEPER/FAQ）
in the process,I can/t update the znode ,why the watch be triggered.
I found the WatchedEvent state is Disconnected and Expired.
I can/t found the triggered condition in the zookeeper wiki and api. I am
confuse.
help me! Thank you !
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