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MapReduce >> mail # user >> HDFS load-balancing

anthony.lelong@... 2013-04-21, 10:01
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Re: HDFS load-balancing
Are you speaking of load balancing of the metadata requests served by
the NameNode? There isn't a direct way right now but HDFS Federation
features would interest you, as it helps divide the namespace itself
into several different NNs.

Read more about Federation at

On Sun, Apr 21, 2013 at 3:31 PM,  <[EMAIL PROTECTED]> wrote:
> Hello everybody.
> I am wondering how HDFS deals with load balancing. I mean, there is on primary namenode and only one secondary namenode (if I well understood the documentation).
> Is that right?
> But with only one server answering all requests, I can't imagine it could be enough.
> I have also read that facebook use that FS so it might be possible, isn't it?
> Regards.
> Anthony.

Harsh J
anthony.lelong@... 2013-04-21, 12:17
Harsh J 2013-04-21, 14:17