Hi,
  

        I had made Hadoop setup & set all the configuration files.
when go to this url through browser http://localhost:50070, it opened well but when i clicked on BrowseTheFileSystem ,
its redirecting to 0.0.0.0:50070/browseDirectory.jsp?namenodeinfoport=500070&dir=/
its showing some 404 error in this page.
Thanks,
Murthy

What Hadoop version did you install? Can you provide the .address
settings for your NN and one of your DNs? If you visit /dfshealth.jsp
on your NN, how many live nodes and dead nodes does it report?

-andy

On Wed, Oct 10, 2012 at 9:54 PM, murthy nvvs <[EMAIL PROTECTED]> wrote:
> Hi,
>
>         I had made Hadoop setup & set all the configuration files.
> when go to this url through browser http://localhost:50070, it opened well
> but when i clicked on BrowseTheFileSystem ,
> its redirecting to
> 0.0.0.0:50070/browseDirectory.jsp?namenodeinfoport=500070&dir=/
> its showing some 404 error in this page.
>
>
> Thanks,
> Murthy

Take a look at your conf files. Normally it is in hdfs-site.xml

Look for name node name or address. Set it to loclahost or 127.0.0.1

That might help.

Serge

On 10/11/12 2:31 PM, "Andy Isaacson" <[EMAIL PROTECTED]> wrote:

>What Hadoop version did you install? Can you provide the .address
>settings for your NN and one of your DNs? If you visit /dfshealth.jsp
>on your NN, how many live nodes and dead nodes does it report?
>
>-andy
>
>On Wed, Oct 10, 2012 at 9:54 PM, murthy nvvs <[EMAIL PROTECTED]>
>wrote:
>> Hi,
>>
>>         I had made Hadoop setup & set all the configuration files.
>> when go to this url through browser http://localhost:50070, it opened
>>well
>> but when i clicked on BrowseTheFileSystem ,
>> its redirecting to
>> 0.0.0.0:50070/browseDirectory.jsp?namenodeinfoport=500070&dir=/
>> its showing some 404 error in this page.
>>
>>
>> Thanks,
>> Murthy

I do too can open  <domain>:50070/dfshealth.jsp page and click NameNode Logs link however when I click on Browse the filesystem link I get the following:

Network Error (dns_unresolved_hostname)
Your requested host "localhost.localdomain" could not be resolved by DNS.
For assistance, contact your network support team.

Rgds,
Andy

-----Original Message-----
From: Serge Blazhiyevskyy [mailto:[EMAIL PROTECTED]]
Sent: Thursday, October 11, 2012 5:35 PM
To: [EMAIL PROTECTED]; murthy nvvs
Subject: Re: Issue when clicking on BrowseFileSystem

Take a look at your conf files. Normally it is in hdfs-site.xml

Look for name node name or address. Set it to loclahost or 127.0.0.1

That might help.

Serge

On 10/11/12 2:31 PM, "Andy Isaacson" <[EMAIL PROTECTED]> wrote:

>What Hadoop version did you install? Can you provide the .address
>settings for your NN and one of your DNs? If you visit /dfshealth.jsp
>on your NN, how many live nodes and dead nodes does it report?
>
>-andy
>
>On Wed, Oct 10, 2012 at 9:54 PM, murthy nvvs <[EMAIL PROTECTED]>
>wrote:
>> Hi,
>>
>>         I had made Hadoop setup & set all the configuration files.
>> when go to this url through browser http://localhost:50070, it opened
>>well  but when i clicked on BrowseTheFileSystem ,  its redirecting to
>>0.0.0.0:50070/browseDirectory.jsp?namenodeinfoport=500070&dir=/
>> its showing some 404 error in this page.
>>
>>
>> Thanks,
>> Murthy

NOTICE: This e-mail message and any attachments are confidential, subject to copyright and may be privileged. Any unauthorized use, copying or disclosure is prohibited. If you are not the intended recipient, please delete and contact the sender immediately. Please consider the environment before printing this e-mail. AVIS : le présent courriel et toute pièce jointe qui l'accompagne sont confidentiels, protégés par le droit d'auteur et peuvent être couverts par le secret professionnel. Toute utilisation, copie ou divulgation non autorisée est interdite. Si vous n'êtes pas le destinataire prévu de ce courriel, supprimez-le et contactez immédiatement l'expéditeur. Veuillez penser à l'environnement avant d'imprimer le présent courriel

What versions of Hadoop are you both running? I seem to have it
working fine on a consistent networking environment setup.

On Fri, Oct 12, 2012 at 6:37 PM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
> I do too can open  <domain>:50070/dfshealth.jsp page and click NameNode Logs link however when I click on Browse the filesystem link I get the following:
>
> Network Error (dns_unresolved_hostname)
> Your requested host "localhost.localdomain" could not be resolved by DNS.
> For assistance, contact your network support team.
>
> Rgds,
> Andy
>
> -----Original Message-----
> From: Serge Blazhiyevskyy [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, October 11, 2012 5:35 PM
> To: [EMAIL PROTECTED]; murthy nvvs
> Subject: Re: Issue when clicking on BrowseFileSystem
>
> Take a look at your conf files. Normally it is in hdfs-site.xml
>
> Look for name node name or address. Set it to loclahost or 127.0.0.1
>
> That might help.
>
> Serge
>
> On 10/11/12 2:31 PM, "Andy Isaacson" <[EMAIL PROTECTED]> wrote:
>
>>What Hadoop version did you install? Can you provide the .address
>>settings for your NN and one of your DNs? If you visit /dfshealth.jsp
>>on your NN, how many live nodes and dead nodes does it report?
>>
>>-andy
>>
>>On Wed, Oct 10, 2012 at 9:54 PM, murthy nvvs <[EMAIL PROTECTED]>
>>wrote:
>>> Hi,
>>>
>>>         I had made Hadoop setup & set all the configuration files.
>>> when go to this url through browser http://localhost:50070, it opened
>>>well  but when i clicked on BrowseTheFileSystem ,  its redirecting to
>>>0.0.0.0:50070/browseDirectory.jsp?namenodeinfoport=500070&dir=/
>>> its showing some 404 error in this page.
>>>
>>>
>>> Thanks,
>>> Murthy
>
> NOTICE: This e-mail message and any attachments are confidential, subject to copyright and may be privileged. Any unauthorized use, copying or disclosure is prohibited. If you are not the intended recipient, please delete and contact the sender immediately. Please consider the environment before printing this e-mail. AVIS : le présent courriel et toute pièce jointe qui l'accompagne sont confidentiels, protégés par le droit d'auteur et peuvent être couverts par le secret professionnel. Toute utilisation, copie ou divulgation non autorisée est interdite. Si vous n'êtes pas le destinataire prévu de ce courriel, supprimez-le et contactez immédiatement l'expéditeur. Veuillez penser à l'environnement avant d'imprimer le présent courriel

--
Harsh J

hadoop version
Hadoop 2.0.0-cdh4.0.1
Subversion file:///data/1/jenkins/workspace/generic-package-rhel64-6-0/topdir/BUILD/hadoop-2.0.0-cdh4.0.1/src/hadoop-common-project/hadoop-common

Andy Kartashov
MPAC
Architecture R&D, Co-op
1340 Pickering Parkway, Pickering, L1V 0C4
1 Phone : (905) 837 6269
6 Mobile: (416) 722 1787
[EMAIL PROTECTED]
-----Original Message-----
From: Harsh J [mailto:[EMAIL PROTECTED]]
Sent: Friday, October 12, 2012 11:41 AM
To: [EMAIL PROTECTED]
Subject: Re: Issue when clicking on BrowseFileSystem

What versions of Hadoop are you both running? I seem to have it working fine on a consistent networking environment setup.

On Fri, Oct 12, 2012 at 6:37 PM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
> I do too can open  <domain>:50070/dfshealth.jsp page and click NameNode Logs link however when I click on Browse the filesystem link I get the following:
>
> Network Error (dns_unresolved_hostname) Your requested host
> "localhost.localdomain" could not be resolved by DNS.
> For assistance, contact your network support team.
>
> Rgds,
> Andy
>
> -----Original Message-----
> From: Serge Blazhiyevskyy [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, October 11, 2012 5:35 PM
> To: [EMAIL PROTECTED]; murthy nvvs
> Subject: Re: Issue when clicking on BrowseFileSystem
>
> Take a look at your conf files. Normally it is in hdfs-site.xml
>
> Look for name node name or address. Set it to loclahost or 127.0.0.1
>
> That might help.
>
> Serge
>
> On 10/11/12 2:31 PM, "Andy Isaacson" <[EMAIL PROTECTED]> wrote:
>
>>What Hadoop version did you install? Can you provide the .address
>>settings for your NN and one of your DNs? If you visit /dfshealth.jsp
>>on your NN, how many live nodes and dead nodes does it report?
>>
>>-andy
>>
>>On Wed, Oct 10, 2012 at 9:54 PM, murthy nvvs <[EMAIL PROTECTED]>
>>wrote:
>>> Hi,
>>>
>>>         I had made Hadoop setup & set all the configuration files.
>>> when go to this url through browser http://localhost:50070, it
>>>opened well  but when i clicked on BrowseTheFileSystem ,  its
>>>redirecting to
>>>0.0.0.0:50070/browseDirectory.jsp?namenodeinfoport=500070&dir=/
>>> its showing some 404 error in this page.
>>>
>>>
>>> Thanks,
>>> Murthy
>
> NOTICE: This e-mail message and any attachments are confidential,
> subject to copyright and may be privileged. Any unauthorized use,
> copying or disclosure is prohibited. If you are not the intended
> recipient, please delete and contact the sender immediately. Please
> consider the environment before printing this e-mail. AVIS : le
> présent courriel et toute pièce jointe qui l'accompagne sont
> confidentiels, protégés par le droit d'auteur et peuvent être couverts
> par le secret professionnel. Toute utilisation, copie ou divulgation
> non autorisée est interdite. Si vous n'êtes pas le destinataire prévu
> de ce courriel, supprimez-le et contactez immédiatement l'expéditeur.
> Veuillez penser à l'environnement avant d'imprimer le présent courriel

--
Harsh J
NOTICE: This e-mail message and any attachments are confidential, subject to copyright and may be privileged. Any unauthorized use, copying or disclosure is prohibited. If you are not the intended recipient, please delete and contact the sender immediately. Please consider the environment before printing this e-mail. AVIS : le présent courriel et toute pièce jointe qui l'accompagne sont confidentiels, protégés par le droit d'auteur et peuvent être couverts par le secret professionnel. Toute utilisation, copie ou divulgation non autorisée est interdite. Si vous n'êtes pas le destinataire prévu de ce courriel, supprimez-le et contactez immédiatement l'expéditeur. Veuillez penser à l'environnement avant d'imprimer le présent courriel

Andy,

It sounds like your namenode thinks the datanode is on localhost. The
"browse the filesystem" URL gets its IP address from the DN
registration message. Is the URL that throws dns_unresolved_hostname
the nn_browsedfscontent.jsp URL, or the browseDirectory.jsp that it
redirects to?

What's your dfs.namenode.rpc-address and http-address settings? Are
there any odd entries in /etc/hosts like having your hostname listed
on a 127.0.0.1 line?  Is this on a single-node cluster or a multi-node
cluster?

If none of the above seems diagnostic, what does the
"NameSystem.registerDatanode: node registration from
DatanodeRegistration(192.168.122.87" log messages in your namenode log
look like?

-andy

On Fri, Oct 12, 2012 at 10:20 AM, Kartashov, Andy
<[EMAIL PROTECTED]> wrote:
> hadoop version
> Hadoop 2.0.0-cdh4.0.1
> Subversion file:///data/1/jenkins/workspace/generic-package-rhel64-6-0/topdir/BUILD/hadoop-2.0.0-cdh4.0.1/src/hadoop-common-project/hadoop-common
>
> Andy Kartashov
> MPAC
> Architecture R&D, Co-op
> 1340 Pickering Parkway, Pickering, L1V 0C4
> 1 Phone : (905) 837 6269
> 6 Mobile: (416) 722 1787
> [EMAIL PROTECTED]
>
>
> -----Original Message-----
> From: Harsh J [mailto:[EMAIL PROTECTED]]
> Sent: Friday, October 12, 2012 11:41 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Issue when clicking on BrowseFileSystem
>
> What versions of Hadoop are you both running? I seem to have it working fine on a consistent networking environment setup.
>
> On Fri, Oct 12, 2012 at 6:37 PM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
>> I do too can open  <domain>:50070/dfshealth.jsp page and click NameNode Logs link however when I click on Browse the filesystem link I get the following:
>>
>> Network Error (dns_unresolved_hostname) Your requested host
>> "localhost.localdomain" could not be resolved by DNS.
>> For assistance, contact your network support team.
>>
>> Rgds,
>> Andy
>>
>> -----Original Message-----
>> From: Serge Blazhiyevskyy [mailto:[EMAIL PROTECTED]]
>> Sent: Thursday, October 11, 2012 5:35 PM
>> To: [EMAIL PROTECTED]; murthy nvvs
>> Subject: Re: Issue when clicking on BrowseFileSystem
>>
>> Take a look at your conf files. Normally it is in hdfs-site.xml
>>
>> Look for name node name or address. Set it to loclahost or 127.0.0.1
>>
>> That might help.
>>
>> Serge
>>
>> On 10/11/12 2:31 PM, "Andy Isaacson" <[EMAIL PROTECTED]> wrote:
>>
>>>What Hadoop version did you install? Can you provide the .address
>>>settings for your NN and one of your DNs? If you visit /dfshealth.jsp
>>>on your NN, how many live nodes and dead nodes does it report?
>>>
>>>-andy
>>>
>>>On Wed, Oct 10, 2012 at 9:54 PM, murthy nvvs <[EMAIL PROTECTED]>
>>>wrote:
>>>> Hi,
>>>>
>>>>         I had made Hadoop setup & set all the configuration files.
>>>> when go to this url through browser http://localhost:50070, it
>>>>opened well  but when i clicked on BrowseTheFileSystem ,  its
>>>>redirecting to
>>>>0.0.0.0:50070/browseDirectory.jsp?namenodeinfoport=500070&dir=/
>>>> its showing some 404 error in this page.
>>>>
>>>>
>>>> Thanks,
>>>> Murthy
>>
>> NOTICE: This e-mail message and any attachments are confidential,
>> subject to copyright and may be privileged. Any unauthorized use,
>> copying or disclosure is prohibited. If you are not the intended
>> recipient, please delete and contact the sender immediately. Please
>> consider the environment before printing this e-mail. AVIS : le
>> présent courriel et toute pièce jointe qui l'accompagne sont
>> confidentiels, protégés par le droit d'auteur et peuvent être couverts
>> par le secret professionnel. Toute utilisation, copie ou divulgation
>> non autorisée est interdite. Si vous n'êtes pas le destinataire prévu
>> de ce courriel, supprimez-le et contactez immédiatement l'expéditeur.
>> Veuillez penser à l'environnement avant d'imprimer le présent courriel
>
>
>
> --
> Harsh J
> NOTICE: This e-mail message and any attachments are confidential, subject to copyright and may be privileged. Any unauthorized use, copying or disclosure is prohibited. If you are not the intended recipient, please delete and contact the sender immediately. Please consider the environment before printing this e-mail. AVIS : le présent courriel et toute pièce jointe qui l'accompagne sont confidentiels, protégés par le droit d'auteur et peuvent être couverts par le secret professionnel. Toute utilisation, copie ou divulgation non autorisée est interdite. Si vous n'êtes pas le destinataire prévu de ce courriel, supprimez-le et contactez immédiatement l'expéditeur. Veuillez penser à l'environnement avant d'imprimer le présent courriel

Andy,

:)
You are absolutely right.  It was inded  "localhost..:"   in the URL. When I changed it to my IP address the page duly loaded. Which .xml file is responsible for this setting?

Cheers,
Andy
-----Original Message-----
From: Andy Isaacson [mailto:[EMAIL PROTECTED]]
Sent: Friday, October 12, 2012 2:10 PM
To: [EMAIL PROTECTED]
Subject: Re: Issue when clicking on BrowseFileSystem

Andy,

It sounds like your namenode thinks the datanode is on localhost. The "browse the filesystem" URL gets its IP address from the DN registration message. Is the URL that throws dns_unresolved_hostname the nn_browsedfscontent.jsp URL, or the browseDirectory.jsp that it redirects to?

What's your dfs.namenode.rpc-address and http-address settings? Are there any odd entries in /etc/hosts like having your hostname listed on a 127.0.0.1 line?  Is this on a single-node cluster or a multi-node cluster?

If none of the above seems diagnostic, what does the
"NameSystem.registerDatanode: node registration from DatanodeRegistration(192.168.122.87" log messages in your namenode log look like?

-andy

On Fri, Oct 12, 2012 at 10:20 AM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
> hadoop version
> Hadoop 2.0.0-cdh4.0.1
> Subversion
> file:///data/1/jenkins/workspace/generic-package-rhel64-6-0/topdir/BUI
> LD/hadoop-2.0.0-cdh4.0.1/src/hadoop-common-project/hadoop-common
>
> Andy Kartashov
> MPAC
> Architecture R&D, Co-op
> 1340 Pickering Parkway, Pickering, L1V 0C4
> 1 Phone : (905) 837 6269
> 6 Mobile: (416) 722 1787
> [EMAIL PROTECTED]
>
>
> -----Original Message-----
> From: Harsh J [mailto:[EMAIL PROTECTED]]
> Sent: Friday, October 12, 2012 11:41 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Issue when clicking on BrowseFileSystem
>
> What versions of Hadoop are you both running? I seem to have it working fine on a consistent networking environment setup.
>
> On Fri, Oct 12, 2012 at 6:37 PM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
>> I do too can open  <domain>:50070/dfshealth.jsp page and click NameNode Logs link however when I click on Browse the filesystem link I get the following:
>>
>> Network Error (dns_unresolved_hostname) Your requested host
>> "localhost.localdomain" could not be resolved by DNS.
>> For assistance, contact your network support team.
>>
>> Rgds,
>> Andy
>>
>> -----Original Message-----
>> From: Serge Blazhiyevskyy [mailto:[EMAIL PROTECTED]]
>> Sent: Thursday, October 11, 2012 5:35 PM
>> To: [EMAIL PROTECTED]; murthy nvvs
>> Subject: Re: Issue when clicking on BrowseFileSystem
>>
>> Take a look at your conf files. Normally it is in hdfs-site.xml
>>
>> Look for name node name or address. Set it to loclahost or 127.0.0.1
>>
>> That might help.
>>
>> Serge
>>
>> On 10/11/12 2:31 PM, "Andy Isaacson" <[EMAIL PROTECTED]> wrote:
>>
>>>What Hadoop version did you install? Can you provide the .address
>>>settings for your NN and one of your DNs? If you visit /dfshealth.jsp
>>>on your NN, how many live nodes and dead nodes does it report?
>>>
>>>-andy
>>>
>>>On Wed, Oct 10, 2012 at 9:54 PM, murthy nvvs <[EMAIL PROTECTED]>
>>>wrote:
>>>> Hi,
>>>>
>>>>         I had made Hadoop setup & set all the configuration files.
>>>> when go to this url through browser http://localhost:50070, it
>>>>opened well  but when i clicked on BrowseTheFileSystem ,  its
>>>>redirecting to
>>>>0.0.0.0:50070/browseDirectory.jsp?namenodeinfoport=500070&dir=/
>>>> its showing some 404 error in this page.
>>>>
>>>>
>>>> Thanks,
>>>> Murthy
>>
>> NOTICE: This e-mail message and any attachments are confidential,
>> subject to copyright and may be privileged. Any unauthorized use,
>> copying or disclosure is prohibited. If you are not the intended
>> recipient, please delete and contact the sender immediately. Please
>> consider the environment before printing this e-mail. AVIS : le
>> présent courriel et toute pièce jointe qui l'accompagne sont
>> confidentiels, protégés par le droit d'auteur et peuvent être
>> couverts par le secret professionnel. Toute utilisation, copie ou
NOTICE: This e-mail message and any attachments are confidential, subject to copyright and may be privileged. Any unauthorized use, copying or disclosure is prohibited. If you are not the intended recipient, please delete and contact the sender immediately. Please consider the environment before printing this e-mail. AVIS : le présent courriel et toute pièce jointe qui l'accompagne sont confidentiels, protégés par le droit d'auteur et peuvent être couverts par le secret professionnel. Toute utilisation, copie ou divulgation non autorisée est interdite. Si vous n'êtes pas le destinataire prévu de ce courriel, supprimez-le et contactez immédiatement l'expéditeur. Veuillez penser à l'environnement avant d'imprimer le présent courriel

On Fri, Oct 12, 2012 at 11:42 AM, Kartashov, Andy
<[EMAIL PROTECTED]> wrote:
> You are absolutely right.  It was inded  "localhost..:"   in the URL. When I changed it to my IP address the page duly loaded. Which .xml file is responsible for this setting?

It depends on which URL, you left out that part of the answer. :) When
you click the link on dfsHealth.jsp, does the error page have
nn_browsedfscontent.jsp in the URL bar, or does it have
browseDirectory.jsp in the URL bar?

The NN address can be specified with dfs.namenode.http-address and the
DN with dfs.datanode.http.address but you shouldn't need to configure
those by hand, the code is supposed to be smart enough to figure it
out automatically. It works in my Hadoop 2.0.x configurations here, so
I'd like to track down what is different about your configuration in
case we need to fix the code to DTRT for that kind of configuration.

The first thing I would check is to make sure your server name is not
listed as 127.0.1.1 in /etc/hosts on the server. Since this (arguably
broken) configuration is the default for some distros, it would be
nice if Hadoop could handle it automatically, but in my experience
things work much better when I delete that line from /etc/hosts.

-andy

> Cheers,
> Andy
>
>
> -----Original Message-----
> From: Andy Isaacson [mailto:[EMAIL PROTECTED]]
> Sent: Friday, October 12, 2012 2:10 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Issue when clicking on BrowseFileSystem
>
> Andy,
>
> It sounds like your namenode thinks the datanode is on localhost. The "browse the filesystem" URL gets its IP address from the DN registration message. Is the URL that throws dns_unresolved_hostname the nn_browsedfscontent.jsp URL, or the browseDirectory.jsp that it redirects to?
>
> What's your dfs.namenode.rpc-address and http-address settings? Are there any odd entries in /etc/hosts like having your hostname listed on a 127.0.0.1 line?  Is this on a single-node cluster or a multi-node cluster?
>
> If none of the above seems diagnostic, what does the
> "NameSystem.registerDatanode: node registration from DatanodeRegistration(192.168.122.87" log messages in your namenode log look like?
>
> -andy
>
> On Fri, Oct 12, 2012 at 10:20 AM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
>> hadoop version
>> Hadoop 2.0.0-cdh4.0.1
>> Subversion
>> file:///data/1/jenkins/workspace/generic-package-rhel64-6-0/topdir/BUI
>> LD/hadoop-2.0.0-cdh4.0.1/src/hadoop-common-project/hadoop-common
>>
>> Andy Kartashov
>> MPAC
>> Architecture R&D, Co-op
>> 1340 Pickering Parkway, Pickering, L1V 0C4
>> 1 Phone : (905) 837 6269
>> 6 Mobile: (416) 722 1787
>> [EMAIL PROTECTED]
>>
>>
>> -----Original Message-----
>> From: Harsh J [mailto:[EMAIL PROTECTED]]
>> Sent: Friday, October 12, 2012 11:41 AM
>> To: [EMAIL PROTECTED]
>> Subject: Re: Issue when clicking on BrowseFileSystem
>>
>> What versions of Hadoop are you both running? I seem to have it working fine on a consistent networking environment setup.
>>
>> On Fri, Oct 12, 2012 at 6:37 PM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
>>> I do too can open  <domain>:50070/dfshealth.jsp page and click NameNode Logs link however when I click on Browse the filesystem link I get the following:
>>>
>>> Network Error (dns_unresolved_hostname) Your requested host
>>> "localhost.localdomain" could not be resolved by DNS.
>>> For assistance, contact your network support team.
>>>
>>> Rgds,
>>> Andy
>>>
>>> -----Original Message-----
>>> From: Serge Blazhiyevskyy [mailto:[EMAIL PROTECTED]]
>>> Sent: Thursday, October 11, 2012 5:35 PM
>>> To: [EMAIL PROTECTED]; murthy nvvs
>>> Subject: Re: Issue when clicking on BrowseFileSystem
>>>
>>> Take a look at your conf files. Normally it is in hdfs-site.xml
>>>
>>> Look for name node name or address. Set it to loclahost or 127.0.0.1
>>>
>>> That might help.
>>>
>>> Serge
>>>
>>> On 10/11/12 2:31 PM, "Andy Isaacson" <[EMAIL PROTECTED]> wrote:
>>>
>>>>What Hadoop version did you install? Can you provide the .address

It displays: /browseDirectory.jsp?namenodeInfoPort=50070&dir=/&nnaddr=localhost.localdomain:8020
Andy Kartashov
MPAC
Architecture R&D, Co-op
1340 Pickering Parkway, Pickering, L1V 0C4
1 Phone : (905) 837 6269
6 Mobile: (416) 722 1787
[EMAIL PROTECTED]
-----Original Message-----
From: Andy Isaacson [mailto:[EMAIL PROTECTED]]
Sent: Friday, October 12, 2012 4:31 PM
To: [EMAIL PROTECTED]
Subject: Re: Issue when clicking on BrowseFileSystem

On Fri, Oct 12, 2012 at 11:42 AM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
> You are absolutely right.  It was inded  "localhost..:"   in the URL. When I changed it to my IP address the page duly loaded. Which .xml file is responsible for this setting?

It depends on which URL, you left out that part of the answer. :) When you click the link on dfsHealth.jsp, does the error page have nn_browsedfscontent.jsp in the URL bar, or does it have browseDirectory.jsp in the URL bar?

The NN address can be specified with dfs.namenode.http-address and the DN with dfs.datanode.http.address but you shouldn't need to configure those by hand, the code is supposed to be smart enough to figure it out automatically. It works in my Hadoop 2.0.x configurations here, so I'd like to track down what is different about your configuration in case we need to fix the code to DTRT for that kind of configuration.

The first thing I would check is to make sure your server name is not listed as 127.0.1.1 in /etc/hosts on the server. Since this (arguably
broken) configuration is the default for some distros, it would be nice if Hadoop could handle it automatically, but in my experience things work much better when I delete that line from /etc/hosts.

-andy

> Cheers,
> Andy
>
>
> -----Original Message-----
> From: Andy Isaacson [mailto:[EMAIL PROTECTED]]
> Sent: Friday, October 12, 2012 2:10 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Issue when clicking on BrowseFileSystem
>
> Andy,
>
> It sounds like your namenode thinks the datanode is on localhost. The "browse the filesystem" URL gets its IP address from the DN registration message. Is the URL that throws dns_unresolved_hostname the nn_browsedfscontent.jsp URL, or the browseDirectory.jsp that it redirects to?
>
> What's your dfs.namenode.rpc-address and http-address settings? Are there any odd entries in /etc/hosts like having your hostname listed on a 127.0.0.1 line?  Is this on a single-node cluster or a multi-node cluster?
>
> If none of the above seems diagnostic, what does the
> "NameSystem.registerDatanode: node registration from DatanodeRegistration(192.168.122.87" log messages in your namenode log look like?
>
> -andy
>
> On Fri, Oct 12, 2012 at 10:20 AM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
>> hadoop version
>> Hadoop 2.0.0-cdh4.0.1
>> Subversion
>> file:///data/1/jenkins/workspace/generic-package-rhel64-6-0/topdir/BU
>> I LD/hadoop-2.0.0-cdh4.0.1/src/hadoop-common-project/hadoop-common
>>
>> Andy Kartashov
>> MPAC
>> Architecture R&D, Co-op
>> 1340 Pickering Parkway, Pickering, L1V 0C4
>> 1 Phone : (905) 837 6269
>> 6 Mobile: (416) 722 1787
>> [EMAIL PROTECTED]
>>
>>
>> -----Original Message-----
>> From: Harsh J [mailto:[EMAIL PROTECTED]]
>> Sent: Friday, October 12, 2012 11:41 AM
>> To: [EMAIL PROTECTED]
>> Subject: Re: Issue when clicking on BrowseFileSystem
>>
>> What versions of Hadoop are you both running? I seem to have it working fine on a consistent networking environment setup.
>>
>> On Fri, Oct 12, 2012 at 6:37 PM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
>>> I do too can open  <domain>:50070/dfshealth.jsp page and click NameNode Logs link however when I click on Browse the filesystem link I get the following:
>>>
>>> Network Error (dns_unresolved_hostname) Your requested host
>>> "localhost.localdomain" could not be resolved by DNS.
>>> For assistance, contact your network support team.
>>>
>>> Rgds,
>>> Andy
>>>
>>> -----Original Message-----
>>> From: Serge Blazhiyevskyy [mailto:[EMAIL PROTECTED]]
NOTICE: This e-mail message and any attachments are confidential, subject to copyright and may be privileged. Any unauthorized use, copying or disclosure is prohibited. If you are not the intended recipient, please delete and contact the sender immediately. Please consider the environment before printing this e-mail. AVIS : le présent courriel et toute pièce jointe qui l'accompagne sont confidentiels, protégés par le droit d'auteur et peuvent être couverts par le secret professionnel. Toute utilisation, copie ou divulgation non autorisée est interdite. Si vous n'êtes pas le destinataire prévu de ce courriel, supprimez-le et contactez immédiatement l'expéditeur. Veuillez penser à l'environnement avant d'imprimer le présent courriel

On Fri, Oct 12, 2012 at 2:09 PM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
> It displays: /browseDirectory.jsp?namenodeInfoPort=50070&dir=/&nnaddr=localhost.localdomain:8020

OK, there are two clues there that your DN and NN both think of
themselves as being on localhost -- the http://<datanode> portion of
the URL is showing the DN address as localhost, and the
nnaddr=localhost is showing the NN address as localhost.

I'd check your /etc/hosts for your hostname and look at the
hdfs-site.xml for any occurrences of localhost.

-andy

>
>
> Andy Kartashov
> MPAC
> Architecture R&D, Co-op
> 1340 Pickering Parkway, Pickering, L1V 0C4
> 1 Phone : (905) 837 6269
> 6 Mobile: (416) 722 1787
> [EMAIL PROTECTED]
>
>
> -----Original Message-----
> From: Andy Isaacson [mailto:[EMAIL PROTECTED]]
> Sent: Friday, October 12, 2012 4:31 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Issue when clicking on BrowseFileSystem
>
> On Fri, Oct 12, 2012 at 11:42 AM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
>> You are absolutely right.  It was inded  "localhost..:"   in the URL. When I changed it to my IP address the page duly loaded. Which .xml file is responsible for this setting?
>
> It depends on which URL, you left out that part of the answer. :) When you click the link on dfsHealth.jsp, does the error page have nn_browsedfscontent.jsp in the URL bar, or does it have browseDirectory.jsp in the URL bar?
>
> The NN address can be specified with dfs.namenode.http-address and the DN with dfs.datanode.http.address but you shouldn't need to configure those by hand, the code is supposed to be smart enough to figure it out automatically. It works in my Hadoop 2.0.x configurations here, so I'd like to track down what is different about your configuration in case we need to fix the code to DTRT for that kind of configuration.
>
> The first thing I would check is to make sure your server name is not listed as 127.0.1.1 in /etc/hosts on the server. Since this (arguably
> broken) configuration is the default for some distros, it would be nice if Hadoop could handle it automatically, but in my experience things work much better when I delete that line from /etc/hosts.
>
> -andy
>
>> Cheers,
>> Andy
>>
>>
>> -----Original Message-----
>> From: Andy Isaacson [mailto:[EMAIL PROTECTED]]
>> Sent: Friday, October 12, 2012 2:10 PM
>> To: [EMAIL PROTECTED]
>> Subject: Re: Issue when clicking on BrowseFileSystem
>>
>> Andy,
>>
>> It sounds like your namenode thinks the datanode is on localhost. The "browse the filesystem" URL gets its IP address from the DN registration message. Is the URL that throws dns_unresolved_hostname the nn_browsedfscontent.jsp URL, or the browseDirectory.jsp that it redirects to?
>>
>> What's your dfs.namenode.rpc-address and http-address settings? Are there any odd entries in /etc/hosts like having your hostname listed on a 127.0.0.1 line?  Is this on a single-node cluster or a multi-node cluster?
>>
>> If none of the above seems diagnostic, what does the
>> "NameSystem.registerDatanode: node registration from DatanodeRegistration(192.168.122.87" log messages in your namenode log look like?
>>
>> -andy
>>
>> On Fri, Oct 12, 2012 at 10:20 AM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
>>> hadoop version
>>> Hadoop 2.0.0-cdh4.0.1
>>> Subversion
>>> file:///data/1/jenkins/workspace/generic-package-rhel64-6-0/topdir/BU
>>> I LD/hadoop-2.0.0-cdh4.0.1/src/hadoop-common-project/hadoop-common
>>>
>>> Andy Kartashov
>>> MPAC
>>> Architecture R&D, Co-op
>>> 1340 Pickering Parkway, Pickering, L1V 0C4
>>> 1 Phone : (905) 837 6269
>>> 6 Mobile: (416) 722 1787
>>> [EMAIL PROTECTED]
>>>
>>>
>>> -----Original Message-----
>>> From: Harsh J [mailto:[EMAIL PROTECTED]]
>>> Sent: Friday, October 12, 2012 11:41 AM
>>> To: [EMAIL PROTECTED]
>>> Subject: Re: Issue when clicking on BrowseFileSystem
>>>
>>> What versions of Hadoop are you both running? I seem to have it working fine on a consistent networking environment setup.
>>>

On Mon, Oct 15, 2012 at 1:00 PM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
> I run Hadoop in pseudo-distrib on amazon instance in the cloud. Shall I change "localhost" in both core-site and mapred-site to my< my-host-name>?

It depends on the desired behavior, but generally it's easiest if you
have the hostnames in *.xml match the hostname of the host in
question. Accessing the webUIs can be annoying depending on your
browser config, however.

> p.s. I can see Namenode status through Web-based interface using url: http://<my-host-name>:50070  however cannot access JobTracker (MapReduce master) using : http://<my-host-name>:50030 :(

Keep in mind that opening up your EC2 Hadoop cluster to arbitrary HTTP
access means that anyone in the world who guesses your IP can access
the files you have stored on HDFS.  Much better to use a VPN or ssh
SOCKS5 port forwarding and keep the Hadoop TCP ports firewalled off
using AWS security policies.

There are unsavoury people who scan EC2 IP ranges looking for
unsecured services like Hadoop, so don't think that "I didn't publish
my IP, I am safe" will save you!

-andy

>
> Andy Kartashov
>
>
> -----Original Message-----
> From: Andy Isaacson [mailto:[EMAIL PROTECTED]]
> Sent: Monday, October 15, 2012 3:52 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Issue when clicking on BrowseFileSystem
>
> Oh, you've *configured* "localhost" as your hostname in the hadoop *.xml files. Yes, that'll result in the behavior you're seeing.
>
> I was assuming you were using a hostname that other machines can resolve. For example running on my laptop I use "adit420" (which is what the laptop calls itself). When running on VMs using
> kvm+virt-manager, I configure my hostnames to the hostnames of the
> VMs, for example vm01.local, vm02.local, et cetera.  (The .local pseudo-domain is managed by avahi.)
>
> You mustn't delete the localhost line from /etc/hosts as that might cause a lot of other stuff to fail, possibly including sshd, xorg, Gnome, etc.
>
> -andy
>
> On Mon, Oct 15, 2012 at 12:24 PM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
>> Andy,
>>
>> My /etc/hosts does say: 127.0.0.1              localhost.localdomain localhost
>> Shall I delete this entry?
>>
>> The only reference to localhost is in:
>>
>> Core-site:
>>   <property>
>>     <name>fs.default.name</name>
>>     <value>hdfs://localhost:8020</value>
>>   </property>
>>
>> Mapred-site
>>   <property>
>>     <name>mapred.job.tracker</name>
>>     <value>localhost:8021</value>
>>   </property>
>>
>> Andy Kartashov
>> MPAC
>> Architecture R&D, Co-op
>> 1340 Pickering Parkway, Pickering, L1V 0C4
>> 1 Phone : (905) 837 6269
>> 6 Mobile: (416) 722 1787
>> [EMAIL PROTECTED]
>>
>> -----Original Message-----
>> From: Andy Isaacson [mailto:[EMAIL PROTECTED]]
>> Sent: Friday, October 12, 2012 6:24 PM
>> To: [EMAIL PROTECTED]
>> Subject: Re: Issue when clicking on BrowseFileSystem
>>
>> On Fri, Oct 12, 2012 at 2:09 PM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:
>>> It displays:
>>> /browseDirectory.jsp?namenodeInfoPort=50070&dir=/&nnaddr=localhost.lo
>>> c
>>> aldomain:8020
>>
>> OK, there are two clues there that your DN and NN both think of themselves as being on localhost -- the http://<datanode> portion of the URL is showing the DN address as localhost, and the nnaddr=localhost is showing the NN address as localhost.
>>
>> I'd check your /etc/hosts for your hostname and look at the hdfs-site.xml for any occurrences of localhost.
>>
>> -andy
>>
>>>
>>>
>>> Andy Kartashov
>>> MPAC
>>> Architecture R&D, Co-op
>>> 1340 Pickering Parkway, Pickering, L1V 0C4
>>> 1 Phone : (905) 837 6269
>>> 6 Mobile: (416) 722 1787
>>> [EMAIL PROTECTED]
>>>
>>>
>>> -----Original Message-----
>>> From: Andy Isaacson [mailto:[EMAIL PROTECTED]]
>>> Sent: Friday, October 12, 2012 4:31 PM
>>> To: [EMAIL PROTECTED]
>>> Subject: Re: Issue when clicking on BrowseFileSystem
>>>
>>> On Fri, Oct 12, 2012 at 11:42 AM, Kartashov, Andy <[EMAIL PROTECTED]> wrote:

for me it goes to localhost  url and i m unable to see the filesystem when
i click on live nodes, thru browse the filesystem it wrks fine

but live nodes is showing as localhost even though its remote ...is there
any configs for this.......

my linux box is at a remote ip

On Fri, Oct 12, 2012 at 11:39 PM, Andy Isaacson <[EMAIL PROTECTED]> wrote:

> Andy,
>
> It sounds like your namenode thinks the datanode is on localhost. The
> "browse the filesystem" URL gets its IP address from the DN
> registration message. Is the URL that throws dns_unresolved_hostname
> the nn_browsedfscontent.jsp URL, or the browseDirectory.jsp that it
> redirects to?
>
> What's your dfs.namenode.rpc-address and http-address settings? Are
> there any odd entries in /etc/hosts like having your hostname listed
> on a 127.0.0.1 line?  Is this on a single-node cluster or a multi-node
> cluster?
>
> If none of the above seems diagnostic, what does the
> "NameSystem.registerDatanode: node registration from
> DatanodeRegistration(192.168.122.87" log messages in your namenode log
> look like?
>
> -andy
>
> On Fri, Oct 12, 2012 at 10:20 AM, Kartashov, Andy
> <[EMAIL PROTECTED]> wrote:
> > hadoop version
> > Hadoop 2.0.0-cdh4.0.1
> > Subversion
> file:///data/1/jenkins/workspace/generic-package-rhel64-6-0/topdir/BUILD/hadoop-2.0.0-cdh4.0.1/src/hadoop-common-project/hadoop-common
> >
> > Andy Kartashov
> > MPAC
> > Architecture R&D, Co-op
> > 1340 Pickering Parkway, Pickering, L1V 0C4
> > 1 Phone : (905) 837 6269
> > 6 Mobile: (416) 722 1787
> > [EMAIL PROTECTED]
> >
> >
> > -----Original Message-----
> > From: Harsh J [mailto:[EMAIL PROTECTED]]
> > Sent: Friday, October 12, 2012 11:41 AM
> > To: [EMAIL PROTECTED]
> > Subject: Re: Issue when clicking on BrowseFileSystem
> >
> > What versions of Hadoop are you both running? I seem to have it working
> fine on a consistent networking environment setup.
> >
> > On Fri, Oct 12, 2012 at 6:37 PM, Kartashov, Andy <[EMAIL PROTECTED]>
> wrote:
> >> I do too can open  <domain>:50070/dfshealth.jsp page and click NameNode
> Logs link however when I click on Browse the filesystem link I get the
> following:
> >>
> >> Network Error (dns_unresolved_hostname) Your requested host
> >> "localhost.localdomain" could not be resolved by DNS.
> >> For assistance, contact your network support team.
> >>
> >> Rgds,
> >> Andy
> >>
> >> -----Original Message-----
> >> From: Serge Blazhiyevskyy [mailto:[EMAIL PROTECTED]]
> >> Sent: Thursday, October 11, 2012 5:35 PM
> >> To: [EMAIL PROTECTED]; murthy nvvs
> >> Subject: Re: Issue when clicking on BrowseFileSystem
> >>
> >> Take a look at your conf files. Normally it is in hdfs-site.xml
> >>
> >> Look for name node name or address. Set it to loclahost or 127.0.0.1
> >>
> >> That might help.
> >>
> >> Serge
> >>
> >> On 10/11/12 2:31 PM, "Andy Isaacson" <[EMAIL PROTECTED]> wrote:
> >>
> >>>What Hadoop version did you install? Can you provide the .address
> >>>settings for your NN and one of your DNs? If you visit /dfshealth.jsp
> >>>on your NN, how many live nodes and dead nodes does it report?
> >>>
> >>>-andy
> >>>
> >>>On Wed, Oct 10, 2012 at 9:54 PM, murthy nvvs <[EMAIL PROTECTED]>
> >>>wrote:
> >>>> Hi,
> >>>>
> >>>>         I had made Hadoop setup & set all the configuration files.
> >>>> when go to this url through browser http://localhost:50070, it
> >>>>opened well  but when i clicked on BrowseTheFileSystem ,  its
> >>>>redirecting to
> >>>>0.0.0.0:50070/browseDirectory.jsp?namenodeinfoport=500070&dir=/
> >>>> its showing some 404 error in this page.
> >>>>
> >>>>
> >>>> Thanks,
> >>>> Murthy
> >>
> >> NOTICE: This e-mail message and any attachments are confidential,
> >> subject to copyright and may be privileged. Any unauthorized use,
> >> copying or disclosure is prohibited. If you are not the intended
> >> recipient, please delete and contact the sender immediately. Please
> >> consider the environment before printing this e-mail. AVIS : le