| Package | Description | 
|---|---|
| com.hazelcast.client.impl.protocol.task.mapreduce | 
 Client protocol tasks implementations for map reduce 
 | 
| com.hazelcast.mapreduce | 
 This package contains the MapReduce API definition for Hazelcast. 
All map reduce operations running in a distributed manner inside the active Hazelcast cluster.  | 
| com.hazelcast.mapreduce.aggregation | 
 This package contains the aggregation API and the convenience helper classes
 to retrieve predefined aggregation implementations. 
 | 
| com.hazelcast.mapreduce.aggregation.impl | 
 This package contains a set of predefined aggregation implementations 
 | 
| com.hazelcast.mapreduce.impl | 
 This package contains the default implementation for the map reduce framework
 internals. 
 | 
| com.hazelcast.mapreduce.impl.operation | 
 This package contains all remote operations that are needed to control work on
 supervising or worker nodes. 
 | 
| com.hazelcast.mapreduce.impl.task | 
 This package contains the base implementation for a standard map reduce job. 
 | 
| Modifier and Type | Method and Description | 
|---|---|
protected Mapper | 
MapReduceForMapMessageTask.getMapper()  | 
protected Mapper | 
MapReduceForSetMessageTask.getMapper()  | 
protected abstract Mapper | 
AbstractMapReduceTask.getMapper()  | 
protected Mapper | 
MapReduceForCustomMessageTask.getMapper()  | 
protected Mapper | 
MapReduceForListMessageTask.getMapper()  | 
protected Mapper | 
MapReduceForMultiMapMessageTask.getMapper()  | 
| Modifier and Type | Interface and Description | 
|---|---|
interface  | 
LifecycleMapper<KeyIn,ValueIn,KeyOut,ValueOut>
Deprecated. 
 
MapReduce is deprecated and will be removed in 4.0.
 For map aggregations, you can use  
Aggregator on IMap.
 For general data processing, it is superseded by Hazelcast Jet. | 
| Modifier and Type | Class and Description | 
|---|---|
class  | 
LifecycleMapperAdapter<KeyIn,ValueIn,KeyOut,ValueOut>
Deprecated. 
 
MapReduce is deprecated and will be removed in 4.0.
 For map aggregations, you can use  
Aggregator on IMap.
 For general data processing, it is superseded by Hazelcast Jet. | 
| Modifier and Type | Method and Description | 
|---|---|
<KeyOut,ValueOut> | 
Job.mapper(Mapper<KeyIn,ValueIn,KeyOut,ValueOut> mapper)
Deprecated.  
Defines the mapper for this task. 
 | 
| Modifier and Type | Method and Description | 
|---|---|
Mapper | 
Aggregation.getMapper(Supplier<Key,?,Supplied> supplier)
Deprecated.  
Returns the Mapper for this aggregation. 
 | 
| Modifier and Type | Field and Description | 
|---|---|
protected Mapper<KeyIn,ValueIn,?,?> | 
AbstractJob.mapper  | 
| Modifier and Type | Method and Description | 
|---|---|
<KeyOut,ValueOut> | 
AbstractJob.mapper(Mapper<KeyIn,ValueIn,KeyOut,ValueOut> mapper)  | 
| Constructor and Description | 
|---|
KeyValueJobOperation(String name,
                    String jobId,
                    int chunkSize,
                    KeyValueSource<K,V> keyValueSource,
                    Mapper mapper,
                    CombinerFactory combinerFactory,
                    ReducerFactory reducerFactory,
                    boolean communicateStats,
                    TopologyChangedStrategy topologyChangedStrategy)  | 
| Modifier and Type | Method and Description | 
|---|---|
Mapper | 
JobTaskConfiguration.getMapper()  | 
| Modifier and Type | Method and Description | 
|---|---|
void | 
KeyValueSourceMappingPhase.executeMappingPhase(KeyValueSource<KeyIn,ValueIn> keyValueSource,
                   Mapper<KeyIn,ValueIn,KeyOut,ValueOut> mapper,
                   Context<KeyOut,ValueOut> context)  | 
protected abstract void | 
MappingPhase.executeMappingPhase(KeyValueSource<KeyIn,ValueIn> keyValueSource,
                   Mapper<KeyIn,ValueIn,KeyOut,ValueOut> mapper,
                   Context<KeyOut,ValueOut> context)  | 
| Constructor and Description | 
|---|
JobTaskConfiguration(Address jobOwner,
                    NodeEngine nodeEngine,
                    int chunkSize,
                    String name,
                    String jobId,
                    Mapper mapper,
                    CombinerFactory combinerFactory,
                    ReducerFactory reducerFactory,
                    KeyValueSource keyValueSource,
                    boolean communicateStats,
                    TopologyChangedStrategy topologyChangedStrategy)  | 
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