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https://issues.apache.org/jira/browse/ZOOKEEPER-66?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12610748#action_12610748
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Flavio Paiva Junqueira commented on ZOOKEEPER-66:
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I'm not entirely convinced that this is a good idea. The watcher is important
for the communication between ZooKeeper and the client, and I can understand if
you want to use a null watcher in the case you're implementing a quick program
for debugging or perhaps test purposes, but in such cases implementing the
Watcher interface and declaring a process method that does nothing doesn't seem
like a huge burden to me.
I'm affraid that by adding a null watcher, we'll give the impression to users
that implementing a Watcher is not that important.
> Add NullWatcher, a watcher that does nothing
> --------------------------------------------
>
> Key: ZOOKEEPER-66
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-66
> Project: Zookeeper
> Issue Type: New Feature
> Components: java client
> Reporter: Anthony Urso
> Priority: Minor
> Attachments: nullwatcher.diff
>
>
> I found that I was repeating this code all over the place. Here is a
> NullWatcher class, a Watcher that does nothing at all.
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