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From Hong Tang <hong.t...@gmail.com>
Subject Re: NameNode Zookeeper Integration
Date Wed, 12 Jan 2011 19:53:11 GMT
I think mac fang means to use ZooKeeper to implement multi-master pattern
for NN and JT.

On Wed, Jan 12, 2011 at 8:23 AM, Koji Noguchi <knoguchi@yahoo-inc.com>wrote:

> Hi.
>
> If you subscribe to zookeeper mailinglist, you would see a hdfs developer
> working on bookeeper recently.
> https://issues.apache.org/jira/browse/ZOOKEEPER-465
> https://issues.apache.org/jira/browse/ZOOKEEPER-959
>
> Probably related.
> https://issues.apache.org/jira/browse/HDFS-234
>
> Koji
>
>
> On 1/11/11 11:35 PM, "mac fang" <mac.hadoop@gmail.com> wrote:
>
> Hi, all,
>
> I am NOT sure if there any plan or issues of integrating Zookeeper and
> NameNode to resolve the Single Point issue of NameNode. With it, the
> DataNodes dont  need to be restarted. I think this can improve the
> availability of the whole cluster. I heard there is a plan for JobTracker
> and TaskTracker, but i dont know if there is the one for HDFS. Currently, i
> am working on it. :)
>
> Any issues or comments are welcome.
>
>
> regards
> macf
>
>

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