Some ideas are left on the SO question
On May 18, 2017, at 6:14 PM, Daniel Gabrieli <[email protected]> wrote: Hi, I am trying to research potential features to feed into the Universal Recommendation engine by using the mahout command line interface. I can successfully run mahout spark-rowsimilarity <https://mahout.apache.org/users/recommender/intro-cooccurrence-spark.html> on up to about 500 rows of data. After that I get the error below: INFO DAGScheduler: Job 7 failed: saveAsTextFile at TextDelimitedReaderWriter.scala:294, took 1.110184 s Exception in thread "main" org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 12.0 failed 1 times, most recent failure: Lost task 0.0 in stage 12.0 (TID 24, localhost): java.lang.IllegalArgumentException I tried various cli options like below but get the same error: mahout spark-rowsimilarity --maxObservations 500000 -sem 6g -ma "local[4]" --input items.csv --output /tmp/output Any suggestions would be most helpful. I cross posted on Stack Overflow here <http://stackoverflow.com/questions/44059463/mahout-spark-rowsimilarity-error> Thanks
