org.apache.spark.api.r

Class PairwiseRRDD<T>

java.lang.Object

org.apache.spark.rdd.RDD<U>

org.apache.spark.api.r.BaseRRDD<T,scala.Tuple2<java.lang.Object,byte[]>>

org.apache.spark.api.r.PairwiseRRDD<T>

All Implemented Interfaces:

java.io.Serializable, Logging

public class PairwiseRRDD<T>
extends BaseRRDD<T,scala.Tuple2<java.lang.Object,byte[]>>

Form an RDD[(Int, Array[Byte])] from key-value pairs returned from R. This is used by SparkR's shuffle operations.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PairwiseRRDD(RDD<T> parent, int numPartitions, byte[] hashFunc, java.lang.String deserializer, byte[] packageNames, java.lang.Object[] broadcastVars, scala.reflect.ClassTag<T> evidence$3)

Method Summary

Methods

Modifier and Type	Method and Description
JavaPairRDD<java.lang.Object,byte[]>	asJavaPairRDD()
protected scala.Tuple2<java.lang.Object,byte[]>	readData(int length)

Methods inherited from class org.apache.spark.api.r.BaseRRDD

compute, dataStream, getPartitions, read

Methods inherited from class org.apache.spark.rdd.RDD

aggregate, cache, cartesian, checkpoint, checkpointData, clearDependencies, coalesce, collect, collect, context, count, countApprox, countApproxDistinct, countApproxDistinct, countByValue, countByValueApprox, creationSite, dependencies, distinct, distinct, doubleRDDToDoubleRDDFunctions, filter, filterWith, first, firstParent, flatMap, flatMapWith, fold, foreach, foreachPartition, foreachWith, getCheckpointFile, getDependencies, getNumPartitions, getPreferredLocations, getStorageLevel, glom, groupBy, groupBy, groupBy, id, intersection, intersection, intersection, isCheckpointed, isEmpty, iterator, keyBy, localCheckpoint, map, mapPartitions, mapPartitionsWithContext, mapPartitionsWithIndex, mapPartitionsWithSplit, mapWith, max, min, name, numericRDDToDoubleRDDFunctions, parent, partitioner, partitions, persist, persist, pipe, pipe, pipe, preferredLocations, randomSplit, rddToAsyncRDDActions, rddToOrderedRDDFunctions, rddToPairRDDFunctions, rddToSequenceFileRDDFunctions, reduce, repartition, sample, saveAsObjectFile, saveAsTextFile, saveAsTextFile, scope, setName, sortBy, sparkContext, subtract, subtract, subtract, take, takeOrdered, takeSample, toArray, toDebugString, toJavaRDD, toLocalIterator, top, toString, treeAggregate, treeReduce, union, unpersist, zip, zipPartitions, zipPartitions, zipPartitions, zipPartitions, zipPartitions, zipPartitions, zipWithIndex, zipWithUniqueId

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.spark.Logging

initializeIfNecessary, initializeLogging, isTraceEnabled, log_, log, logDebug, logDebug, logError, logError, logInfo, logInfo, logName, logTrace, logTrace, logWarning, logWarning

Constructor Detail

PairwiseRRDD

public PairwiseRRDD(RDD<T> parent,
            int numPartitions,
            byte[] hashFunc,
            java.lang.String deserializer,
            byte[] packageNames,
            java.lang.Object[] broadcastVars,
            scala.reflect.ClassTag<T> evidence$3)

Method Detail

readData

protected scala.Tuple2<java.lang.Object,byte[]> readData(int length)

Specified by:

readData in class BaseRRDD<T,scala.Tuple2<java.lang.Object,byte[]>>

asJavaPairRDD

public JavaPairRDD<java.lang.Object,byte[]> asJavaPairRDD()