Package | Description |
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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. |
Modifier and Type | Method and Description |
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Job<KeyIn,ValueIn> |
Job.chunkSize(int chunkSize)
Defines the number of elements per chunk.
|
Job<KeyIn,ValueIn> |
Job.keyPredicate(KeyPredicate<KeyIn> predicate)
Defines the
KeyPredicate implementation to preselect keys the MapReduce task will be executed on. |
<K,V> Job<K,V> |
JobTracker.newJob(KeyValueSource<K,V> source)
Builds a
Job instance for the given KeyValueSource instance. |
Job<KeyIn,ValueIn> |
Job.onKeys(Iterable<KeyIn> keys)
Defines keys to execute the mapper and a possibly defined reducer against.
|
Job<KeyIn,ValueIn> |
Job.onKeys(KeyIn... keys)
Defines keys to execute the mapper and a possibly defined reducer against.
|
Job<KeyIn,ValueIn> |
Job.topologyChangedStrategy(TopologyChangedStrategy topologyChangedStrategy)
Defines the strategy to handle topology changes while executing the map reduce job.
|
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