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From Jeff Hammerbacher <ham...@cloudera.com>
Subject Re: namenode crash - recovery model?
Date Tue, 28 Sep 2010 09:53:51 GMT
Hey John,

See https://issues.apache.org/jira/browse/HDFS-1064 for the JIRA where high
availability strategies for the NameNode are discussed.


On Mon, Sep 13, 2010 at 2:33 PM, John Hui <john.m.hui@gmail.com> wrote:

> 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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