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Posted to dev@nutch.apache.org by Markus Jelsma <ma...@openindex.io> on 2011/12/22 14:17:58 UTC
multiple slf bindings
Hi,
We're starting to see these errors:
attempt_201112221246_0001_m_000038_0: SLF4J: Class path contains multiple
SLF4J bindings.
attempt_201112221246_0001_m_000038_0: SLF4J: Found binding in
[jar:file:/opt/hadoop/hadoop-0.22.0/lib/slf4j-
log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
attempt_201112221246_0001_m_000038_0: SLF4J: Found binding in
[jar:file:/mnt/disk_2/tmp/taskTracker/systems/jobcache/job_201112221246_0001/jars/lib/slf4j-
log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
attempt_201112221246_0001_m_000038_0: SLF4J: See
http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
One comes from the Hadoop dist and the other comes with Nutch. Any advice?
Nutch is not going to build without one and the Hadoop daemon need their own
binding too.
Cheers,
--
Markus Jelsma - CTO - Openindex
Re: multiple slf bindings
Posted by Lewis John Mcgibbney <le...@gmail.com>.
Hi Markus,
We experienced this with Gora a short time ago.
Hadoop 0.20.0 contains slf4j-log4j12.version 1.4.3
Nutch trunk contains the same library dependency @ version 1.6.1
You might be able to get round this by simply downgrading you Nutch or
upgrading your Hadoop dependecy to match up. I think this is the
simplest workaround.
Let us know how you get on.
Lewis
On Fri, Dec 23, 2011 at 12:41 PM, Markus Jelsma
<ma...@openindex.io> wrote:
> anyone?
>
> this only happens with Nutch on a 0.22.0 cluster.
>
>
> On Thursday 22 December 2011 14:17:58 Markus Jelsma wrote:
>> Hi,
>>
>> We're starting to see these errors:
>>
>> attempt_201112221246_0001_m_000038_0: SLF4J: Class path contains multiple
>> SLF4J bindings.
>> attempt_201112221246_0001_m_000038_0: SLF4J: Found binding in
>> [jar:file:/opt/hadoop/hadoop-0.22.0/lib/slf4j-
>> log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
>> attempt_201112221246_0001_m_000038_0: SLF4J: Found binding in
>> [jar:file:/mnt/disk_2/tmp/taskTracker/systems/jobcache/job_201112221246_000
>> 1/jars/lib/slf4j-
>> log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
>> attempt_201112221246_0001_m_000038_0: SLF4J: See
>> http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
>>
>> One comes from the Hadoop dist and the other comes with Nutch. Any advice?
>> Nutch is not going to build without one and the Hadoop daemon need their
>> own binding too.
>>
>> Cheers,
>
> --
> Markus Jelsma - CTO - Openindex
--
Lewis
Re: multiple slf bindings
Posted by Markus Jelsma <ma...@openindex.io>.
anyone?
this only happens with Nutch on a 0.22.0 cluster.
On Thursday 22 December 2011 14:17:58 Markus Jelsma wrote:
> Hi,
>
> We're starting to see these errors:
>
> attempt_201112221246_0001_m_000038_0: SLF4J: Class path contains multiple
> SLF4J bindings.
> attempt_201112221246_0001_m_000038_0: SLF4J: Found binding in
> [jar:file:/opt/hadoop/hadoop-0.22.0/lib/slf4j-
> log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
> attempt_201112221246_0001_m_000038_0: SLF4J: Found binding in
> [jar:file:/mnt/disk_2/tmp/taskTracker/systems/jobcache/job_201112221246_000
> 1/jars/lib/slf4j-
> log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
> attempt_201112221246_0001_m_000038_0: SLF4J: See
> http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
>
> One comes from the Hadoop dist and the other comes with Nutch. Any advice?
> Nutch is not going to build without one and the Hadoop daemon need their
> own binding too.
>
> Cheers,
--
Markus Jelsma - CTO - Openindex