ai.grakn.graql.internal.analytics

Class GraknMapReduce<T>

java.lang.Object

ai.grakn.graql.internal.analytics.CommonOLAP

ai.grakn.graql.internal.analytics.GraknMapReduce<T>

All Implemented Interfaces:

Cloneable, org.apache.tinkerpop.gremlin.process.computer.MapReduce<Serializable,T,Serializable,T,Map<Serializable,T>>

Direct Known Subclasses:

ClusterMemberMapReduce, ClusterSizeMapReduce, CountMapReduce, DegreeDistributionMapReduce, MaxMapReduce, MeanMapReduce, MinMapReduce, StdMapReduce, SumMapReduce

public abstract class GraknMapReduce<T>
extends CommonOLAP
implements org.apache.tinkerpop.gremlin.process.computer.MapReduce<Serializable,T,Serializable,T,Map<Serializable,T>>

A map reduce task specific to Grakn with common method implementations.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.tinkerpop.gremlin.process.computer.MapReduce

org.apache.tinkerpop.gremlin.process.computer.MapReduce.MapEmitter<K,V>, org.apache.tinkerpop.gremlin.process.computer.MapReduce.NullObject, org.apache.tinkerpop.gremlin.process.computer.MapReduce.ReduceEmitter<OK,OV>, org.apache.tinkerpop.gremlin.process.computer.MapReduce.Stage

Field Summary

Fields

Modifier and Type	Field and Description
static String	MAP_REDUCE_MEMORY_KEY

Fields inherited from class ai.grakn.graql.internal.analytics.CommonOLAP

analyticsElements

Fields inherited from interface org.apache.tinkerpop.gremlin.process.computer.MapReduce

MAP_REDUCE

Constructor Summary

Constructors

Constructor and Description
GraknMapReduce()

Method Summary

Modifier and Type	Method and Description
org.apache.tinkerpop.gremlin.process.computer.MapReduce<Serializable,T,Serializable,T,Map<Serializable,T>>	clone()
String	getMemoryKey()
void	map(org.apache.tinkerpop.gremlin.structure.Vertex vertex, org.apache.tinkerpop.gremlin.process.computer.MapReduce.MapEmitter<Serializable,T> emitter)
void	storeState(org.apache.commons.configuration.Configuration configuration) Store persistentProperties and any hard coded fields in an apache config object for propagation to spark executors.

Methods inherited from class ai.grakn.graql.internal.analytics.CommonOLAP

loadState, toString

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.tinkerpop.gremlin.process.computer.MapReduce

addResultToMemory, combine, createMapReduce, doStage, generateFinalResult, getMapKeySort, getReduceKeySort, loadState, reduce, workerEnd, workerStart

Field Detail

MAP_REDUCE_MEMORY_KEY

public static final String MAP_REDUCE_MEMORY_KEY

See Also:

Constant Field Values

Constructor Detail

GraknMapReduce

public GraknMapReduce()

Method Detail

storeState

public void storeState(org.apache.commons.configuration.Configuration configuration)

Description copied from class: CommonOLAP

Store persistentProperties and any hard coded fields in an apache config object for propagation to spark executors.

Specified by:

storeState in interface org.apache.tinkerpop.gremlin.process.computer.MapReduce<Serializable,T,Serializable,T,Map<Serializable,T>>

Overrides:

storeState in class CommonOLAP

Parameters:

configuration - the apache config object that will be propagated

map

public void map(org.apache.tinkerpop.gremlin.structure.Vertex vertex,
                org.apache.tinkerpop.gremlin.process.computer.MapReduce.MapEmitter<Serializable,T> emitter)

Specified by:

map in interface org.apache.tinkerpop.gremlin.process.computer.MapReduce<Serializable,T,Serializable,T,Map<Serializable,T>>

getMemoryKey

public String getMemoryKey()

Specified by:

getMemoryKey in interface org.apache.tinkerpop.gremlin.process.computer.MapReduce<Serializable,T,Serializable,T,Map<Serializable,T>>

clone

public org.apache.tinkerpop.gremlin.process.computer.MapReduce<Serializable,T,Serializable,T,Map<Serializable,T>> clone()

Specified by:

clone in interface org.apache.tinkerpop.gremlin.process.computer.MapReduce<Serializable,T,Serializable,T,Map<Serializable,T>>

Overrides:

clone in class Object