Patrick Hunt commented on ZOOKEEPER-220:

Comment from Stu on user list:

> It may be better not to let the programmer know about those two
> lists, and to see if the abstraction can be improved instead.
> Sometimes I feel that I have to know too much about the internal
> working of ZooKeeper to use its API.

> programming guide watches section should clarify server/clientlib role in 
> data/child watch maint.
> -------------------------------------------------------------------------------------------------
>                 Key: ZOOKEEPER-220
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-220
>             Project: Zookeeper
>          Issue Type: Improvement
>          Components: documentation
>    Affects Versions: 3.0.0
>         Environment: 
> http://hadoop.apache.org/zookeeper/docs/r3.0.0/zookeeperProgrammers.html#ch_zkWatchesonly
>            Reporter: Patrick Hunt
>             Fix For: 3.1.0
> http://hadoop.apache.org/zookeeper/docs/r3.0.0/zookeeperProgrammers.html#ch_zkWatches
> The server is maintaining two lists, it's not really clear in some sections 
> that it's the server, esp as in v3 the client is also maintaining it's own 
> list(s).

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