| 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  
JobTracker implementations 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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