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HDFS, mail # user - Re: Hadoop Cluster


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bejoy.hadoop@... 2013-01-22, 18:07
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Mohammad Tariq 2013-01-22, 18:20
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RE: Hadoop Cluster
Henjarappa, Savitha 2013-01-24, 09:25
Thank you so much for your quick response.

From: Mohammad Tariq [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, January 22, 2013 11:51 PM
To: [EMAIL PROTECTED]; Bejoy Ks
Subject: Re: Hadoop Cluster

The most significant difference between the two, as per my view, is that HA eliminates the problem of 'NN as the single point of failure'. For a detailed info I would suggest you to visit the official web site. You might also find this link<http://blog.cloudera.com/blog/2011/02/hadoop-availability/> useful which talk about HA in great detail.

For your second question you can follow Bejoy sir's answer.

Warm Regards,
Tariq
https://mtariq.jux.com/
cloudfront.blogspot.com<http://cloudfront.blogspot.com>

On Tue, Jan 22, 2013 at 11:37 PM, <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote:
Hi Savitha

HA is a new feature n hadoop introduced in Hadoop 2.x releases. So It is a new feature on top of Hadoop cluster.

Ganglia is one of the widely used tools to monitor the cluster in detail. On a basic hdfs and mapreduce level, the JobTracker and NameNode web UI would give you a good consolidation on hadoop cluster.
Regards
Bejoy KS

Sent from remote device, Please excuse typos
________________________________
From: "Henjarappa, Savitha" <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>>
Date: Tue, 22 Jan 2013 12:22:21 +0000
To: [EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]><[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>>
ReplyTo: [EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>
Subject: Hadoop Cluster

Hi,

I am trying to understand the difference between HA cluster and Hadoop cluster. Can this group help me understand, how differently Hadoop cluster should be monitored?

Thanks,
Savitha