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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2392) upgrade to ZooKeeper 3.3.0
Date Tue, 30 Mar 2010 07:30:29 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12851296#action_12851296
] 

stack commented on HBASE-2392:
------------------------------

Andrew: Is zk 3.3.0 not in a maven repo now?  It was supposed to be published there as part
of release.  If not available, lets go terrorize phunt and mahadev.  Also, see HBASE-2380.
 There are some considerations there you should include in this patch?  Why you thinking of
not doing this on branch?  Real installs will be pissed off about required upgrade of zk?
(Though unsupported, seems like zk 3.2.2 can talk to a 3.3.0).

> upgrade to ZooKeeper 3.3.0
> --------------------------
>
>                 Key: HBASE-2392
>                 URL: https://issues.apache.org/jira/browse/HBASE-2392
>             Project: Hadoop HBase
>          Issue Type: Improvement
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Minor
>             Fix For: 0.21.0
>
>         Attachments: HBASE-2392.patch
>
>
> See http://hadoop.apache.org/zookeeper/docs/r3.3.0/releasenotes.html
> Key features of the 3.3.0 release:
> * observers - non-voting members of the ensemble, scale reads  http://bit.ly/9wPnpq
> * distributed queue recipe implementation (c/java)
> * additional 4letterword/jmx features to support operations
> Changes in contrib:
> * zookeeper-tree: export/import znode namespace
> * zooinspector: gui browser for znode namespace
> * bookkeeper client rewrite, use of netty
> This change can't be done on the 0.20 branch. From the release notes:
> {quote}
> Note: a new feature was added to the version 3.3 client which breaks backward compatibility,
at the wire protocol level, between version 3.3 clients and prior versions of the server (server
versions prior to 3.3).
> {quote}

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