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Interface IMapper

MapReduce mapper interface processes input into key-value pairs to generate a set of intermediate key-value pairs to be sent for further refining and extraction of the data.

Assembly: Alachisoft.NCache.Runtime.dll
Syntax
public interface IMapper : IDisposable

Methods

Name Description
Map(Object, Object, IOutputMap)

This method will contain the logic to map the input from cache into more meaningful and goal specific key-value pairs which can be sent to the Reducer or optional Combiner.

Referring to the workflow diagram, the string input is transformed by emitting each word with a key-value pair in the Mapper.

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