Hi i am following this tutorial for installing hadoop alpha 2.0.2 on ubuntu
12.10 and am sure home variables for java and hadoop are properly
configured.

http://jugnu-life.blogspot.in/2012/05/hadoop-20-install-tutorial-023x.html?showComment=1355499712017#c4821381562859079532

after all the setup when i try to format hdfs it says something like this..

hduser@impala:/usr/local/hadoop$ hdfs -format

i get this error any reason why ..

Unrecognized option: -format
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

does anyone have any idea about it??

On Fri, Dec 14, 2012 at 7:47 AM, anand sharma <[EMAIL PROTECTED]> wrote:
> Hi i am following this tutorial for installing hadoop alpha 2.0.2 on ubuntu
> 12.10 and am sure home variables for java and hadoop are properly
> configured.
>
> http://jugnu-life.blogspot.in/2012/05/hadoop-20-install-tutorial-023x.html?showComment=1355499712017#c4821381562859079532
>
> after all the setup when i try to format hdfs it says something like this..
>
> hduser@impala:/usr/local/hadoop$ hdfs -format
>
> i get this error any reason why ..
>
> Unrecognized option: -format

The instructions say to run "hdfs namenode -format" but you ran "hdfs -format".

Either "hadoop namenode -format" or "hdfs namenode -format" should work fine.

The jugnu-life instructions are suboptimal on a few points; just from
a quick glance I notice

 - the instructions install a 32-bit JVM, hadoop strongly prefers a 64-bit JVM.
 - DSA ssh keys are deprecated, the default RSA keys work better.
 - config files go in /etc/hadoop/conf/ but the instructions say /etc/hadoop/.

I suspect there are more odd things there that I haven't noticed on my
first glance.

-andy

Thanks for the generous reply both of you and yes it was a typo and my
mistake. got it working by "hdfs namenode -format" Thanks to Andy.
On Sat, Dec 15, 2012 at 2:12 AM, Andy Isaacson <[EMAIL PROTECTED]> wrote:

> On Fri, Dec 14, 2012 at 7:47 AM, anand sharma <[EMAIL PROTECTED]>
> wrote:
> > Hi i am following this tutorial for installing hadoop alpha 2.0.2 on
> ubuntu
> > 12.10 and am sure home variables for java and hadoop are properly
> > configured.
> >
> >
> http://jugnu-life.blogspot.in/2012/05/hadoop-20-install-tutorial-023x.html?showComment=1355499712017#c4821381562859079532
> >
> > after all the setup when i try to format hdfs it says something like
> this..
> >
> > hduser@impala:/usr/local/hadoop$ hdfs -format
> >
> > i get this error any reason why ..
> >
> > Unrecognized option: -format
>
> The instructions say to run "hdfs namenode -format" but you ran "hdfs
> -format".
>
> Either "hadoop namenode -format" or "hdfs namenode -format" should work
> fine.
>
> The jugnu-life instructions are suboptimal on a few points; just from
> a quick glance I notice
>
>  - the instructions install a 32-bit JVM, hadoop strongly prefers a 64-bit
> JVM.
>  - DSA ssh keys are deprecated, the default RSA keys work better.
>  - config files go in /etc/hadoop/conf/ but the instructions say
> /etc/hadoop/.
>
> I suspect there are more odd things there that I haven't noticed on my
> first glance.
>
> -andy
>

I think this is just a typo?

Use 'hadoop' instead of 'hdfs'

On 12/14/2012 10:47 AM, anand sharma wrote:
> Hi i am following this tutorial for installing hadoop alpha 2.0.2 on
> ubuntu 12.10 and am sure home variables for java and hadoop are properly
> configured.
>
> http://jugnu-life.blogspot.in/2012/05/hadoop-20-install-tutorial-023x.html?showComment=1355499712017#c4821381562859079532
>
> after all the setup when i try to format hdfs it says something like this..
>
> hduser@impala:/usr/local/hadoop$ hdfs -format
>
> i get this error any reason why ..
>
> Unrecognized option: -format
> Error: Could not create the Java Virtual Machine.
> Error: A fatal exception has occurred. Program will exit.
>
> does anyone have any idea about it??

You need to format namenode as hdfs user

$sudo -u hdfs hadoop namenode -format

-----Original Message-----
From: Terry Healy [mailto:[EMAIL PROTECTED]]
Sent: Friday, December 14, 2012 10:53 AM
To: [EMAIL PROTECTED]
Subject: Re: formatting hdfs says could not create jvm

I think this is just a typo?

Use 'hadoop' instead of 'hdfs'

On 12/14/2012 10:47 AM, anand sharma wrote:
> Hi i am following this tutorial for installing hadoop alpha 2.0.2 on
> ubuntu 12.10 and am sure home variables for java and hadoop are
> properly configured.
>
> http://jugnu-life.blogspot.in/2012/05/hadoop-20-install-tutorial-023x.
> html?showComment=1355499712017#c4821381562859079532
>
> after all the setup when i try to format hdfs it says something like this..
>
> hduser@impala:/usr/local/hadoop$ hdfs -format
>
> i get this error any reason why ..
>
> Unrecognized option: -format
> Error: Could not create the Java Virtual Machine.
> Error: A fatal exception has occurred. Program will exit.
>
> does anyone have any idea about it??
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