Hi there,

does anyone know, if it possible to setup an active-active-NameNode in hadoop 1.0 ? Or how can i provide a HA-NameNode?

thanks in advance.
//nils

On Wed, Nov 14, 2012 at 4:35 AM, mailinglist
<[EMAIL PROTECTED]> wrote:
> does anyone know, if it possible to setup an active-active-NameNode in hadoop 1.0 ? Or how can i provide a HA-NameNode?

HA is not present in hadoop 1.0.  You'll have to upgrade to a release
on branch 2.0 or 0.23.

-andy

Adding to Andy's points:

To be clarify: I think 0.23 does not claim HA feature.
Also Hadoop-2 HA is Active-Standby model.

Regards,
Uma
________________________________________
From: Andy Isaacson [[EMAIL PROTECTED]]
Sent: Thursday, November 15, 2012 8:19 AM
To: [EMAIL PROTECTED]
Subject: Re: Active-Active setup for the namenode

On Wed, Nov 14, 2012 at 4:35 AM, mailinglist
<[EMAIL PROTECTED]> wrote:
> does anyone know, if it possible to setup an active-active-NameNode in hadoop 1.0 ? Or how can i provide a HA-NameNode?

HA is not present in hadoop 1.0.  You'll have to upgrade to a release
on branch 2.0 or 0.23.

-andy

Yep, Uma is right, I misunderstood.  HDFS-1623 is "target version:
0.23.3" but did not actually make the 0.23.3 nor 0.23.4 releases,
which is why Fix version is 2.0.0-alpha.

Sorry for the confusion!

-andy

On Wed, Nov 14, 2012 at 8:34 PM, Uma Maheswara Rao G
<[EMAIL PROTECTED]> wrote:
> Adding to Andy's points:
>
> To be clarify: I think 0.23 does not claim HA feature.
> Also Hadoop-2 HA is Active-Standby model.
>
> Regards,
> Uma
> ________________________________________
> From: Andy Isaacson [[EMAIL PROTECTED]]
> Sent: Thursday, November 15, 2012 8:19 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Active-Active setup for the namenode
>
> On Wed, Nov 14, 2012 at 4:35 AM, mailinglist
> <[EMAIL PROTECTED]> wrote:
>> does anyone know, if it possible to setup an active-active-NameNode in hadoop 1.0 ? Or how can i provide a HA-NameNode?
>
> HA is not present in hadoop 1.0.  You'll have to upgrade to a release
> on branch 2.0 or 0.23.
>
> -andy