MapReduce, mail # user - warnings from log4j -- where to look to resolve?

warnings from log4j -- where to look to resolve?

Calvin 2013-01-28, 10:36

Hi,

Each time I run a job, I get thousands of these warnings. I've looked at
conf/log4j.properties and nothing out of the ordinary (a diff with the
default log4j.properties shows no lines of consequence changed).

Has anyone else come across this problem? Where else would I look to find
potentially conflicting settings for log4j?

Thanks.

---

attempt_201301161411_0244_m_000054_0: log4j:WARN Not allowed to write to a
closed appender.
attempt_201301161411_0244_m_000054_0: log4j:WARN Not allowed to write to a
closed appender.
attempt_201301161411_0244_m_000054_0: log4j:WARN Not allowed to write to a
closed appender.

Re: warnings from log4j -- where to look to resolve?

Harsh J 2013-01-28, 16:21

Hi,

Does your code instantiate and work with a self logger object? If so,
is it a log4j instance or a commons logging one?

On Mon, Jan 28, 2013 at 4:06 PM, Calvin <[EMAIL PROTECTED]> wrote:
> Hi,
>
> Each time I run a job, I get thousands of these warnings. I've looked at
> conf/log4j.properties and nothing out of the ordinary (a diff with the
> default log4j.properties shows no lines of consequence changed).
>
> Has anyone else come across this problem? Where else would I look to find
> potentially conflicting settings for log4j?
>
> Thanks.
>
> ---
>
> attempt_201301161411_0244_m_000054_0: log4j:WARN Not allowed to write to a
> closed appender.
> attempt_201301161411_0244_m_000054_0: log4j:WARN Not allowed to write to a
> closed appender.
> attempt_201301161411_0244_m_000054_0: log4j:WARN Not allowed to write to a
> closed appender.

--
Harsh J

Re: warnings from log4j -- where to look to resolve?

Calvin 2013-01-28, 18:28

Hi Harsh,

No self logger object is being used.

On Mon, Jan 28, 2013 at 8:21 AM, Harsh J <[EMAIL PROTECTED]> wrote:
>
> Hi,
>
> Does your code instantiate and work with a self logger object? If so,
> is it a log4j instance or a commons logging one?
>
> On Mon, Jan 28, 2013 at 4:06 PM, Calvin <[EMAIL PROTECTED]> wrote:
> > Hi,
> >
> > Each time I run a job, I get thousands of these warnings. I've looked at
> > conf/log4j.properties and nothing out of the ordinary (a diff with the
> > default log4j.properties shows no lines of consequence changed).
> >
> > Has anyone else come across this problem? Where else would I look to find
> > potentially conflicting settings for log4j?
> >
> > Thanks.
> >
> > ---
> >
> > attempt_201301161411_0244_m_000054_0: log4j:WARN Not allowed to write to a
> > closed appender.
> > attempt_201301161411_0244_m_000054_0: log4j:WARN Not allowed to write to a
> > closed appender.
> > attempt_201301161411_0244_m_000054_0: log4j:WARN Not allowed to write to a
> > closed appender.
>
>
>
> --
> Harsh J

Re: warnings from log4j -- where to look to resolve?

Vinod Kumar Vavilapalli 2013-01-29, 02:13

Try passing -Dlog4j.debug via mapred.child.java.opts. That will clearly show you the problem as part of logs itself.

Are these errors appearing in stdout/stderr or syslog?

+Vinod Kumar Vavilapalli
Hortonworks Inc.
http://hortonworks.com/

On Jan 28, 2013, at 2:36 AM, Calvin wrote:

> Hi,
>
> Each time I run a job, I get thousands of these warnings. I've looked at conf/log4j.properties and nothing out of the ordinary (a diff with the default log4j.properties shows no lines of consequence changed).
>
> Has anyone else come across this problem? Where else would I look to find potentially conflicting settings for log4j?
>
> Thanks.
>
> ---
>
> attempt_201301161411_0244_m_000054_0: log4j:WARN Not allowed to write to a closed appender.
> attempt_201301161411_0244_m_000054_0: log4j:WARN Not allowed to write to a closed appender.
> attempt_201301161411_0244_m_000054_0: log4j:WARN Not allowed to write to a closed appender.