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What are the Name and syntax for core methods of Reducer?

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Below three core methods of reducer :- (1)setup():-We used this method to configure various parameters like input data size and distributed cache. And the syntax is given below. public void setup (context) (2)reduce():-Heart of the Reducer is always called once per key with the associated reduced task. public void reduce(Key, Value, context) (3)cleanup():-We used this method to clean the temporary files once at the end of the task public void cleanup (context)

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