-Re: Evaluator for RecommenderJob (hadoop implementation)?
Ted Dunning 2010-09-18, 18:27
I don't know the answer to this, but previously this kind of problem was
caused by highly skewed statistics in the input data.
If there are things that cooccur with everything, then you will have
problems with the speed of the algorithm.
Can you say something about the distribution of your data? Can you post a
frequency by rank table?
On Sat, Sep 18, 2010 at 10:25 AM, Software Dev <[EMAIL PROTECTED]>wrote:
> I am trying to run FPGrowth:
> *hadoop jar /opt/mahout-0.3/mahout-examples-0.3.job
> org.apache.mahout.fpm.pfpgrowth.FPGrowthDriver -i
> output/product/part-r-00000 -o pfp -method mapreduce -regex [\\t] -s 5 -g
> 17500 -k 50*
> However the 3rd task:* "Processing FPTree: Bottom Up FP Growth >
> reduce"*will not finish. It's basically stuck at 85% and hasn't budged
> in over an
> hour. The output of the first task outputted there were about 37K features
> so I set -g to 17500. Does anyone know whats going on and how I can speed
> this up?