Spark MLlib: network intensive algorithms

Hi, I have a question wrt ML algorithms. What are the most network intensive algorithms in Spark MLlib? I have already looked at ALS (as pointed here: https://databricks.com/blog/2014/07/23/scalable-collaborative-filtering-with-spark-mllib.html ALS is pretty communication and computation

Spark MLlib: MultilayerPerceptronClassifier error?

Hi, I am trying to train model by MultilayerPerceptronClassifier. It works on sample data from data/mllib/sample_multiclass_classification_data.txt with 4 features, 3 classes and layers [4, 4, 3]. But when I try to use other input files with other features and classes (from here for example: