| Package | Description | 
|---|---|
| com.hazelcast.mapreduce.impl | This package contains the default implementation for the map reduce framework
 internals. | 
| com.hazelcast.mapreduce.impl.task | This package contains the base implementation for a standard map reduce job. | 
| Class and Description | 
|---|
| MapReduceService The MapReduceService class is the base point for the map reduce implementation. | 
| Class and Description | 
|---|
| AbstractJob Base class for all map reduce job implementations | 
| AbstractJobTracker This is the base class for all  JobTrackerimplementations on node and client side.It combines a lot of the base functionality to handle remote operations. | 
| MapReduceService The MapReduceService class is the base point for the map reduce implementation. | 
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