DataFrame Find/Filter Based on Input - Inside Map function

[Ashish Soni]

Hi All ,

I have an DataFrame Created as below

options.put("dbtable", "(select * from user) as account");
        DataFrame accountRdd =
sqlContext.read().format("jdbc").options(options).load();

and i have another RDD which contains login name and i want to find the
userid from above DF RDD and return it

Not sure how can i do that as when i apply a map function and say filter on
DF i get Null pointor exception.

Please help.