Aggregation in MapReduce
This feature is only available in the NCache Enterprise.
NCache Aggregator has been built upon the MapReduce framework and processes distributed data records to return compiled and statistical results. As the name indicates, the Aggregator is used to perform an operation over a range of values to produce a small number of results for analytical purposes.
Along with providing a built-in aggregator, NCache also allows you to implement and use custom Aggregator.
In This Section
Aggregator (MapReduce) Components and Working
Explains in detail the working of the Aggregator.
Aggregator Implementation and Usage
Provides samples to implement Aggregator interfaces for custom logic and use it in code.