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From "Patrick Hunt (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2392) upgrade to ZooKeeper 3.3.0
Date Tue, 30 Mar 2010 19:42:27 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12851532#action_12851532
] 

Patrick Hunt commented on HBASE-2392:
-------------------------------------

This is from the ZK readme for 3.3.0:

As of version 3.3.0 bin/src/javadoc jars are deployed to the Apache Maven repository.
  http://people.apache.org/repo/m2-ibiblio-rsync-repository/

Not sure if anyone has tried this yet though, let us know if there are issues. FYI we're basically
following the same approach as
Avro.

> 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: 0.20.4, 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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