| Interface | Description | 
|---|---|
| ComputerResult | The result of the  GraphComputer's computation. | 
| GraphComputer | The  GraphComputeris responsible for the execution of aVertexProgramand then a set ofMapReducejobs
 over the vertices in theGraph. | 
| GraphComputer.Features | |
| MapReduce<MK,MV,RK,RV,R> | A MapReduce is composed of map(), combine(), and reduce() stages. | 
| MapReduce.MapEmitter<K,V> | The MapEmitter is used to emit key/value pairs from the map() stage of the MapReduce job. | 
| MapReduce.ReduceEmitter<OK,OV> | The ReduceEmitter is used to emit key/value pairs from the combine() and reduce() stages of the MapReduce job. | 
| Memory | The Memory of a  GraphComputeris a global data structure where by vertices can communicate information with one another. | 
| Memory.Admin | The Admin interface is used by the  GraphComputerto update the Memory. | 
| MessageCombiner<M> | A MessageCombiner allows two messages in route to the same vertex to be aggregated into a single message. | 
| Messenger<M> | The  Messengerserves as the routing system for messages between vertices. | 
| VertexProgram<M> | A  VertexProgramrepresents one component of a distributed graph computation. | 
| VertexProgram.Builder | |
| VertexProgram.Features | 
| Enum | Description | 
|---|---|
| GraphComputer.Persist | |
| GraphComputer.ResultGraph | |
| MapReduce.Stage | MapReduce is composed of three stages: map, combine, and reduce. | 
Copyright © 2013–2015 Apache Software Foundation. All rights reserved.