In Data integration job i had stored the data in hash map and written a custom java function to fetch values on the basis of keys. Now by considering spark distributed framework, what is the best way to achieve lookup operation (hashmap or rdd or pair rdd or data frame or etc.,)? Also if possible, please elaborate on why is it a best option..
Hi , Thanj you for the reply. I agree tcache components are helpful in a connected lookup scenario. But for my use case it needs an unconnected lookup. For DI job I have achieved through a udf using hashmaps. In spark batch job how would I achieve the same thing ?
