Watch event delivery rules -------------------------- Key: ZOOKEEPER-50 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-50 Project: Zookeeper Issue Type: Bug Components: java client Reporter: Benjamin Reed
We need to make clear in the documentation and enforce in the code the following watch event rules: # A watch event will be delivered once to each watcher, even if it is registered multiple times. For example, if the same watch object is used for getChildren("/foo", watchObj) and getData("/foo", watchObj, stat) and foo is deleted, watchObj will be called once to processed the NodeDeleted event. # Session events will be delivered to all watchers. *Note: a watcher is a Watcher object in Java or a (watch function, context) pair in C.* There is currently a bug in the Java client that causes the session disconnected event to be delivered twice to the default watcher if the default watcher is also used to watch a path. This violates rule 1. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.