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 <jayunit...@gmail.com> 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
