Hi, I have 3 data frame with not same items inside labled values i mean : data frame 1 collabled a b c
dataframe2 collabled a w z when i enode the first data fram i get collabled a b c a 1 0 0 b 0 1 0 c 0 0 1 df2 collabled a w z a 1 0 0 w 0 1 0 z 0 0 1 i want add b and c with values 0 to df1 w and z with values 0 to df2 but onehotencoder inside spark use sparsvector. How i can add columns like expected without breaking normal behivor of onehotenoder ?