Package com.hazelcast.mapreduce

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 For general data processing, it is superseded by Hazelcast Jet.

This package contains the MapReduce API definition for Hazelcast.
All map reduce operations running in a distributed manner inside the active Hazelcast cluster.

See: Description

Interface Summary

Interface	Description
Collator<ValueIn,ValueOut>	Deprecated MapReduce is deprecated and will be removed in 4.0.
CombinerFactory<KeyIn,ValueIn,ValueOut>	Deprecated MapReduce is deprecated and will be removed in 4.0.
Context<K,V>	Deprecated MapReduce is deprecated and will be removed in 4.0.
Job<KeyIn,ValueIn>	Deprecated MapReduce is deprecated and will be removed in 4.0.
JobCompletableFuture<V>	Deprecated MapReduce is deprecated and will be removed in 4.0.
JobPartitionState	Deprecated MapReduce is deprecated and will be removed in 4.0.
JobProcessInformation	Deprecated MapReduce is deprecated and will be removed in 4.0.
JobTracker	Deprecated MapReduce is deprecated and will be removed in 4.0.
KeyPredicate<Key>	Deprecated MapReduce is deprecated and will be removed in 4.0.
LifecycleMapper<KeyIn,ValueIn,KeyOut,ValueOut>	Deprecated MapReduce is deprecated and will be removed in 4.0.
Mapper<KeyIn,ValueIn,KeyOut,ValueOut>	Deprecated MapReduce is deprecated and will be removed in 4.0.
MappingJob<EntryKey,KeyIn,ValueIn>	Deprecated MapReduce is deprecated and will be removed in 4.0.
PartitionIdAware	Deprecated MapReduce is deprecated and will be removed in 4.0.
ReducerFactory<KeyIn,ValueIn,ValueOut>	Deprecated MapReduce is deprecated and will be removed in 4.0.
ReducingJob<EntryKey,KeyIn,ValueIn>	Deprecated MapReduce is deprecated and will be removed in 4.0.
ReducingSubmittableJob<EntryKey,KeyIn,ValueIn>	Deprecated MapReduce is deprecated and will be removed in 4.0.
TrackableJob<V>	Deprecated MapReduce is deprecated and will be removed in 4.0.

Class Summary

Class	Description
Combiner<ValueIn,ValueOut>	Deprecated MapReduce is deprecated and will be removed in 4.0.
KeyValueSource<K,V>	Deprecated MapReduce is deprecated and will be removed in 4.0.
LifecycleMapperAdapter<KeyIn,ValueIn,KeyOut,ValueOut>	Deprecated MapReduce is deprecated and will be removed in 4.0.
Reducer<ValueIn,ValueOut>	Deprecated MapReduce is deprecated and will be removed in 4.0.

Enum Summary

Enum	Description
JobPartitionState.State	Definition of the processing states
TopologyChangedStrategy	Deprecated MapReduce is deprecated and will be removed in 4.0.

Exception Summary

Exception	Description
RemoteMapReduceException	Deprecated MapReduce is deprecated and will be removed in 4.0.
TopologyChangedException	Deprecated MapReduce is deprecated and will be removed in 4.0.

Package com.hazelcast.mapreduce Description

This package contains the MapReduce API definition for Hazelcast.
All map reduce operations running in a distributed manner inside the active Hazelcast cluster. Therefor Mapper, Combiner and Reducer implementations need to be fully serializable by Hazelcast. Any of the existing serialization patterns are available for those classes, too.
If custom KeyValueSource is provided above statement also applies to this implementation.

For a basic idea how to use this framework see Job or Mapper, Combiner or Reducer.

Since:

3.2