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MapReduce, mail # user - please HELP me with a WebHDFS problem


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douxin 2013-09-26, 14:24
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Nitin Pawar 2013-09-26, 14:37
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Re: please HELP me with a WebHDFS problem
douxin 2013-09-26, 14:47
Hi Pawar,
> can you share your /etc/hosts file ?

sure,

as below:

namenode (Fedora-19    192.168.1.217)
==============================================#cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4
localhost4.localdomain4
::1         localhost localhost.localdomain localhost6
localhost6.localdomain6

192.168.1.244   hadoop1
192.168.1.248   hadoop2
192.168.1.217   Fedora-19
==============================================
datanode1 (hadoop1     192.168.1.244)
==============================================#cat /etc/hosts
127.0.0.1    localhost

# The following lines are desirable for IPv6 capable hosts
::1     localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

192.168.1.217   Fedora-19
192.168.1.244   hadoop1
192.168.1.248   hadoop2
==============================================
datanode2 (hadoop2     192.168.1.248)
==============================================#cat /etc/hosts
127.0.0.1    localhost

# The following lines are desirable for IPv6 capable hosts
::1     localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

192.168.1.217   Fedora-19
192.168.1.244   hadoop1
192.168.1.248   hadoop2
==============================================
Cheers,
Dou

>
>
> On Thu, Sep 26, 2013 at 7:54 PM, douxin <[EMAIL PROTECTED]> wrote:
>
>>   Hi guys,
>>
>> I had a small cluster including 1 namenode and 2 datanodes
>>
>> I got webhdfs enabled
>>
>> and I sent an OPEN request as follow:
>> curl -i -L 'http://namenode:50070/webhdfs/v1/path/to/somefile?op=OPEN'
>>
>> It redirected to
>> http://datanode:50075/webhdfs/v1/path/to/somefile?op=OPEN
>> what weird was that the redirected URL used "localhost" as its netloc,
>> the URL is like
>> "http://localhost:50075/webhdfs/v1/path/to/somefile?op=OPEN"<http://localhost:50075/webhdfs/v1/path/to/somefile?op=OPEN>
>> I have checked the config files and I didn't figured out what influenced
>> it.
>>
>> In addiction when I check the active data nodes via
>> "http://namenode:50070/dfsnodelist.jsp?whatNodes=LIVE"<http://namenode:50070/dfsnodelist.jsp?whatNodes=LIVE>
>> The node column' datanodes' name were all "localhost"
>> why?
>>
>> Any body knows what's going on about that?
>>
>> Thanks,
>> Dou
>>
>>
>>
>