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Posted to common-user@hadoop.apache.org by jason hadoop <ja...@gmail.com> on 2009/03/06 15:41:57 UTC
Re: master trying fetch data from slave using "localhost" hostname :)
I see that when the host name of the node is also on the localhost line in
/etc/hosts
On Fri, Mar 6, 2009 at 9:38 AM, <pa...@gmail.com> wrote:
>
> I see the same strange behavior on 2-node cluster with 0.18.3, 0.19.1 and
> snv's branch-0.20.0...
> 2 nodes:
> "master1" running NameNode, JobTracker, DataNode, TaskTracker.
> "slave1" running DataNode, TaskTracker.
>
> PROBLEM: "master" trying fetch data of "attempt" that running on slave, BUT
> connecting to "localhost" for unknown reason:
>
> (master's console:)
> 09/03/06 17:15:01 WARN mapred.JobClient: Error reading task
> outputhttp://localhost:50060/tasklog?plaintext=true&taskid=attempt_200903061711_0001_m_000000_0&filter=stdout
>
> But "attempt_200903061711_0001_m_000000_0" i have found in "logs/userlogs"
> on "slave"!
> "master" trying to fetch it, but connects to itself and, of course, can't
> find if (HTTP 410)
>
> wget "
> http://localhost:50060/tasklog?plaintext=true&taskid=attempt_200903061711_0001_m_000000_0&filter=stdout
> "
> "Failed to retrieve stderr log for task:
> attempt_200903061711_0001_m_000001_0"
>
> In the "logs/userlogs" on master there are some other "attempt"s.
>
> (Of course, little by little all work "migrates" to "master" and all the
> Job finishing successfully).
>
Re: master trying fetch data from slave using "localhost" hostname :)
Posted by pa...@gmail.com.
>
> what does /etc/host look like now?
>
> I hit some problems with ubuntu and localhost last week; the hostname
> was set up in /etc/hosts not just to point to the loopback address, but
> to a different loopback address (127.0.1.1) from the normal value
> (127.0.0.1), so breaking everything.
>
> http://www.1060.org/blogxter/entry?publicid=121ED68BB21DB8C060FE88607222EB52
"/etc/hosts" now on both machines:
192.168.0.28 master1
192.168.0.199 slave1
Re: master trying fetch data from slave using "localhost" hostname
:)
Posted by Steve Loughran <st...@apache.org>.
pavelkolodin@gmail.com wrote:
> On Fri, 06 Mar 2009 14:41:57 -0000, jason hadoop
> <ja...@gmail.com> wrote:
>
>> I see that when the host name of the node is also on the localhost
>> line in
>> /etc/hosts
>>
>
> I erased all records with "localhost" from all "/etc/hosts" files and
> all fine now :)
> Thank you :)
>
what does /etc/host look like now?
I hit some problems with ubuntu and localhost last week; the hostname
was set up in /etc/hosts not just to point to the loopback address, but
to a different loopback address (127.0.1.1) from the normal value
(127.0.0.1), so breaking everything.
http://www.1060.org/blogxter/entry?publicid=121ED68BB21DB8C060FE88607222EB52
Re: master trying fetch data from slave using "localhost" hostname :)
Posted by pa...@gmail.com.
On Fri, 06 Mar 2009 14:41:57 -0000, jason hadoop <ja...@gmail.com>
wrote:
> I see that when the host name of the node is also on the localhost line
> in
> /etc/hosts
>
I erased all records with "localhost" from all "/etc/hosts" files and all
fine now :)
Thank you :)
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