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From "Jinsong Hu" <jinsong...@hotmail.com>
Subject Re: namenode crash - recovery model?
Date Mon, 13 Sep 2010 21:47:17 GMT
use linux heartbeat project and DRBD to build a backup namenode.


From: "John Hui" <john.m.hui@gmail.com>
Sent: Monday, September 13, 2010 2:33 PM
To: <hdfs-dev@hadoop.apache.org>
Subject: namenode crash - recovery model?

> Hi All,
> I am new to Hadoop.  I have been reading and playing around with Hadoop, 
> it
> seems like the namenode is a single point of failure.  I read about the
> backup node which is basically a copy of the live namenode.
> So if the namenode were to crash, what is some of the recovery model that
> people have in place.  Is there a way to configure hadoop to flip the the
> backup node and use that as the primary name node if the primary namenode
> goes down..
> Thanks in advance,
> John

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