CODEWITHSUNDEEP
scalafastutil
mahdi62
mahdi62

Reputation: 1037

Equivalent of scala hashmap in fastutil

I want to use fastutill classes in my spark streaming application (scala). I am using hashmap instead but based on Spark documentations , they suggest use fastutill classes instead of hashmap..First, i wnat to know if these classes worth and then want to know what is the equvalent class in fast utill for hashmap.

Particulalry I am using a hashmap

HashMap[Key_Object, ArrayBuffer[Value_object]..I wnated to know what is the best collection in fastutill

Upvotes: 0

Views: 973

Answers (1)

blr
blr

Reputation: 968

I think you're looking for Object2ObjectOpenHashMap.java. It acts like a generic hashMap class. It's default hashing functions works okay IMO.

If you want to reduce hash-collisions or better performance, prefer Object2ObjectOpenCustomHashMap. You'll have to provide your context-specific custom hashing function when creating the hash-map.

Note that, FastUtil has plenty of other types that might work better for you, refer to their documentation which can be found here

Upvotes: 1

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