There was almost certainly an error while running the job. Look through your logs for signs of such a problem?
Sean On 10 Feb 2011 19:51, "Steve Kuo" <[email protected]> wrote: > The input file squidly.csv is a test file that worked with > SlopeOneRecommender.java. I ran the job with the following command: > > hadoop jar /data/mahout/mahout-distribution-0.4/mahout-examples-0.4-job.jar > org.apache.mahout.cf.taste.hadoop.slopeone.SlopeOneAverageDiffsJob -i > squidly -o squidlyPredict > > Unfortunately, file squidlyPredict/part-r-00000.gz is an empty .gz file. > > What is the expected input format for SlopeOneAverageDiffsJob? > > Squidly.csv is quite simple > 1,101,1.0 > 1,102,0.5 > 1,103,0.2 > 2,101,1.0 > 2,103,0.5 > 2,104,0.2 > 3,101,0.2 > 3,102,0.4 > 3,103,1.0 > 3,104,0.4 > 4,102,0.9 > 4,103,0.4 > 4,104,0.5 > 5,101,0.4
