Package org.redisson.api.mapreduce

Interface RMapReduceExecutor<VIn,KOut,VOut>

Type Parameters:

VIn - input value

KOut - output key

VOut - output value

All Known Subinterfaces:

RCollectionMapReduce<VIn,KOut,VOut>, RMapReduce<KIn,VIn,KOut,VOut>

All Known Implementing Classes:

RedissonCollectionMapReduce, RedissonMapReduce

public interface RMapReduceExecutor<VIn,KOut,VOut>

Contains methods for MapReduce process execution.

Author:

Nikita Koksharov

Method Summary

Modifier and Type	Method	Description
Map<KOut,VOut>	execute()	Executes MapReduce process across Redisson Nodes
void	execute(String resultMapName)	Executes MapReduce process across Redisson Nodes and stores result in map with resultMapName
<R> R	execute(RCollator<KOut,VOut,R> collator)	Executes MapReduce process across Redisson Nodes and collides result using defined collator
RFuture<Map<KOut,VOut>>	executeAsync()	Executes MapReduce process across Redisson Nodes in asynchronous mode
RFuture<Void>	executeAsync(String resultMapName)	Executes MapReduce process across Redisson Nodes in asynchronous mode and stores result in map with resultMapName
<R> RFuture<R>	executeAsync(RCollator<KOut,VOut,R> collator)	Executes MapReduce process across Redisson Nodes in asynchronous mode and collides result using defined collator

Method Details

execute

Map<KOut,VOut> execute()

Executes MapReduce process across Redisson Nodes

Returns:

map containing reduced keys and values

executeAsync

RFuture<Map<KOut,VOut>> executeAsync()

Executes MapReduce process across Redisson Nodes in asynchronous mode

Returns:

map containing reduced keys and values

execute

void execute(String resultMapName)

Executes MapReduce process across Redisson Nodes and stores result in map with resultMapName

Parameters:

resultMapName - - destination map name

executeAsync

RFuture<Void> executeAsync(String resultMapName)

Executes MapReduce process across Redisson Nodes in asynchronous mode and stores result in map with resultMapName

Parameters:

resultMapName - - destination map name

Returns:

void

execute

<R> R execute(RCollator<KOut,VOut,R> collator)

Executes MapReduce process across Redisson Nodes and collides result using defined collator

Type Parameters:

R - result type

Parameters:

collator - applied to result

Returns:

collated result

executeAsync

<R> RFuture<R> executeAsync(RCollator<KOut,VOut,R> collator)

Executes MapReduce process across Redisson Nodes in asynchronous mode and collides result using defined collator

Type Parameters:

R - result type

Parameters:

collator - applied to result

Returns:

collated result