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

-----Original Message-----
From: "Henjarappa, Savitha" <[EMAIL PROTECTED]>
Date: Tue, 22 Jan 2013 12:22:21
To: [EMAIL PROTECTED]<[EMAIL PROTECTED]>
Reply-To: [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

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
On Tue, Jan 22, 2013 at 11:37 PM, <[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]>
> *Date: *Tue, 22 Jan 2013 12:22:21 +0000
> *To: *[EMAIL PROTECTED]<[EMAIL PROTECTED]>
> *ReplyTo: * [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
>
>
>
>

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