ZooKeeper client exists() javadoc incorrectly states watcher(s) will be
triggered on node deletion
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Key: ZOOKEEPER-1393
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1393
Project: ZooKeeper
Issue Type: Bug
Components: java client
Affects Versions: 3.4.2, 3.3.4
Reporter: Gary Malouf
Priority: Minor
I found it very misleading that the javadoc for the exists() calls that take a
boolean or a Watcher state that 'The watch will be triggered by a successful
operation that creates/delete the node or sets the data on the node.'
What I've seen from descriptions of bugs (older but this is this references it
http://zookeeper-user.578899.n2.nabble.com/Exists-Watch-Triggered-by-Delete-td1490893.html)
and my own personal usage is that watchers set on exists() are triggered when
a non-existing node is now created or an existing node is changed. They are
NOT triggered when the node already exists and is deleted.
http://zookeeper.apache.org/doc/r3.4.3/api/index.html
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