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From "Benjamin Reed (JIRA)" <j...@apache.org>
Subject [jira] Commented: (ZOOKEEPER-78) added a high level protocol/feature - for easy Leader Election or exclusive Write Lock creation
Date Mon, 04 Aug 2008 17:40:44 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-78?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12619606#action_12619606
] 

Benjamin Reed commented on ZOOKEEPER-78:
----------------------------------------

I've documented on the wiki at http://wiki.apache.org/hadoop/ZooKeeper/ErrorHandling why ZooKeeperFacade
needs to be removed. Just use the ZooKeeper object. For this patch in particular it is very
important not to use a facade.

> added a high level protocol/feature - for easy Leader Election or exclusive Write Lock
creation
> -----------------------------------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-78
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-78
>             Project: Zookeeper
>          Issue Type: New Feature
>          Components: java client
>    Affects Versions: 3.0.0
>            Reporter: james strachan
>            Assignee: james strachan
>         Attachments: patch_with_including_Benjamin's_fix.patch, using_zookeeper_facade.patch
>
>
> Here's a patch which adds a little WriteLock helper class for performing leader elections
or creating exclusive locks in some directory znode. Note its an early cut; am sure we can
improve it over time. The aim is to avoid folks having to use the low level ZK stuff but provide
a simpler high level abstraction.

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