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From Joey Echeverria <j...@cloudera.com>
Subject Re: HDFS Backup nodes
Date Wed, 07 Dec 2011 11:07:58 GMT
You should also configure the Namenode to use an NFS mount for one of
it's storage directories. That will give the most up-to-date back of
the metadata in case of total node failure.

-Joey

On Wed, Dec 7, 2011 at 3:17 AM, praveenesh kumar <praveenesh@gmail.com> wrote:
> This means still we are relying on Secondary NameNode idealogy for
> Namenode's backup.
> Can OS-mirroring of Namenode is a good alternative keep it alive all the
> time ?
>
> Thanks,
> Praveenesh
>
> On Wed, Dec 7, 2011 at 1:35 PM, Uma Maheswara Rao G <maheswara@huawei.com>wrote:
>
>> AFAIK backup node introduced in 0.21 version onwards.
>> ________________________________________
>> From: praveenesh kumar [praveenesh@gmail.com]
>> Sent: Wednesday, December 07, 2011 12:40 PM
>> To: common-user@hadoop.apache.org
>> Subject: HDFS Backup nodes
>>
>> Does hadoop 0.20.205 supports configuring HDFS backup nodes ?
>>
>> Thanks,
>> Praveenesh
>>



-- 
Joseph Echeverria
Cloudera, Inc.
443.305.9434

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