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Hadoop >> mail # user >> resetting conf/ parameters in a life cluster.


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Re: resetting conf/ parameters in a life cluster.
hmmm.... I wonder if there is a way to push conf/*xml parameters out to all
the slaves, maybe at runtime ?

On Sat, Aug 18, 2012 at 4:06 PM, Harsh J <[EMAIL PROTECTED]> wrote:

> Jay,
>
> Oddly, the counters limit changes (increases, anyway) needs to be
> applied at the JT, TT and *also* at the client - to take real effect.
>
> On Sat, Aug 18, 2012 at 8:31 PM, Jay Vyas <[EMAIL PROTECTED]> wrote:
> > Hi guys:
> >
> > I've reset my max counters as follows :
> >
> > ./hadoop-site.xml:
> >
>  <property><name>mapreduce.job.counters.limit</name><value>15000</value></property>
> >
> > However, a job is failing (after reducers get to 100%!) at the very end,
> > due to exceeded counter limit.  I've confirmed in my
> > code that indeed the correct counter parameter is being set.
> >
> > My hypothesis: Somehow, the name node counters parameter is effectively
> > being transferred to slaves... BUT the name node *itself* hasn't updated
> its
> > maximum counter allowance, so it throws an exception at the end of the
> job,
> > that is, they dying message from hadoop is
> >
> > " max counter limit 120 exceeded.... "
> >
> > I've confirmed in my job that the counter parameter is correct, when the
> > job starts... However... somehow the "120 limit exceeded" exception is
> > still thrown.
> >
> > This is in elastic map reduce, hadoop .20.205
> >
> > --
> > Jay Vyas
> > MMSB/UCHC
>
>
>
> --
> Harsh J
>

--
Jay Vyas
MMSB/UCHC