if null replace with 0, otherwise default value in same column

Question

In SparkR shell 1.5.0, Created a sample data set:

df_test <- createDataFrame(sqlContext, data.frame(mon = c(1,2,3,4,5), year = c(2011,2012,2013,2014,2015)))
d         


        

Answer 1

df_test2$year <- ifelse(isNull(df_test2$year), 0, df_test2$year)

Pure SparkR code that resolves the problem.