Re: spark linear regression error training dataset is empty

Hi Xiaomeng, Have you tried to confirm the DataFrame contents before fitting? like assembleddata.show() before fitting. Regards, Yuhao 2016-12-21 10:05 GMT-08:00 Xiaomeng Wan : > Hi, > > I am running linear regression on a dataframe and get the following error: > > Exception in thread "main" ja

spark linear regression error training dataset is empty

Hi, I am running linear regression on a dataframe and get the following error: Exception in thread "main" java.lang.AssertionError: assertion failed: Training dataset is empty. at scala.Predef$.assert(Predef.scala:170) at org.apache.spark.ml.optim.WeightedLeastSquares$Aggregator.validate(Weight