Spark 2.0.2 - hiveContext.emptyDataFrame.except(hiveContext.emptyDataFrame).count()

[Ravindra]

Can someone please explain why

println ( " Empty count " +
hiveContext.emptyDataFrame.except(hiveContext.emptyDataFrame).count()

*prints* -  Empty count 1

This was not the case in Spark 1.5.2... I am upgrading to spark 2.0.2 and
found this. This causes my tests to fail. Is there another way to check
full equality of 2 dataframes.

Thanks,
Ravindra.