Packages

package root

Definition Classes: root

package org

Definition Classes: root

package apache

Definition Classes: org

package spark

Core Spark functionality.

Core Spark functionality. org.apache.spark.SparkContext serves as the main entry point to Spark, while org.apache.spark.rdd.RDD is the data type representing a distributed collection, and provides most parallel operations.

In addition, org.apache.spark.rdd.PairRDDFunctions contains operations available only on RDDs of key-value pairs, such as groupByKey and join; org.apache.spark.rdd.DoubleRDDFunctions contains operations available only on RDDs of Doubles; and org.apache.spark.rdd.SequenceFileRDDFunctions contains operations available on RDDs that can be saved as SequenceFiles. These operations are automatically available on any RDD of the right type (e.g. RDD[(Int, Int)] through implicit conversions.

Java programmers should reference the org.apache.spark.api.java package for Spark programming APIs in Java.

Classes and methods marked with Experimental are user-facing features which have not been officially adopted by the Spark project. These are subject to change or removal in minor releases.

Classes and methods marked with Developer API are intended for advanced users want to extend Spark through lower level interfaces. These are subject to changes or removal in minor releases.

Definition Classes: apache

package api

Definition Classes: spark

package broadcast

Spark's broadcast variables, used to broadcast immutable datasets to all nodes.

Definition Classes: spark

package graphx

ALPHA COMPONENT GraphX is a graph processing framework built on top of Spark.

Definition Classes: spark

package input

Definition Classes: spark

package internal

Definition Classes: spark

package io

IO codecs used for compression.

IO codecs used for compression. See org.apache.spark.io.CompressionCodec.

Definition Classes: spark

package launcher

Definition Classes: spark

package mapred

Definition Classes: spark

package metrics

Definition Classes: spark

package ml

DataFrame-based machine learning APIs to let users quickly assemble and configure practical machine learning pipelines.

Definition Classes: spark

package mllib

RDD-based machine learning APIs (in maintenance mode).

The spark.mllib package is in maintenance mode as of the Spark 2.0.0 release to encourage migration to the DataFrame-based APIs under the org.apache.spark.ml package. While in maintenance mode,

no new features in the RDD-based spark.mllib package will be accepted, unless they block implementing new features in the DataFrame-based spark.ml package;
bug fixes in the RDD-based APIs will still be accepted.

The developers will continue adding more features to the DataFrame-based APIs in the 2.x series to reach feature parity with the RDD-based APIs. And once we reach feature parity, this package will be deprecated.

Definition Classes: spark
See also: SPARK-4591 to track the progress of feature parity

package partial

:: Experimental ::

Support for approximate results. This provides convenient api and also implementation for approximate calculation.

Definition Classes: spark
See also: org.apache.spark.rdd.RDD.countApprox

package rdd

Provides several RDD implementations.

Provides several RDD implementations. See org.apache.spark.rdd.RDD.

Definition Classes: spark

package scheduler

Spark's scheduling components.

Spark's scheduling components. This includes the org.apache.spark.scheduler.DAGScheduler and lower level org.apache.spark.scheduler.TaskScheduler.

Definition Classes: spark

package security

Definition Classes: spark

package serializer

Pluggable serializers for RDD and shuffle data.

Definition Classes: spark
See also: org.apache.spark.serializer.Serializer

package sql

Allows the execution of relational queries, including those expressed in SQL using Spark.

Definition Classes: spark

package status

Definition Classes: spark

package storage

Definition Classes: spark

package streaming

Spark Streaming functionality.

Spark Streaming functionality. org.apache.spark.streaming.StreamingContext serves as the main entry point to Spark Streaming, while org.apache.spark.streaming.dstream.DStream is the data type representing a continuous sequence of RDDs, representing a continuous stream of data.

In addition, org.apache.spark.streaming.dstream.PairDStreamFunctions contains operations available only on DStreams of key-value pairs, such as groupByKey and reduceByKey. These operations are automatically available on any DStream of the right type (e.g. DStream[(Int, Int)] through implicit conversions.

For the Java API of Spark Streaming, take a look at the org.apache.spark.streaming.api.java.JavaStreamingContext which serves as the entry point, and the org.apache.spark.streaming.api.java.JavaDStream and the org.apache.spark.streaming.api.java.JavaPairDStream which have the DStream functionality.

Definition Classes: spark

package util

Spark utilities.

Definition Classes: spark

package kvstore

package random

Utilities for random number generation.

package sketch

AccumulatorV2

CollectionAccumulator

DoubleAccumulator

EnumUtil

LongAccumulator

MutablePair

SizeEstimator

StatCounter

TaskCompletionListener

TaskFailureListener

org.apache.spark

util

package util

Spark utilities.

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abstract class AccumulatorV2[IN, OUT] extends Serializable
The base class for accumulators, that can accumulate inputs of type IN, and produce output of type OUT.
The base class for accumulators, that can accumulate inputs of type IN, and produce output of type OUT.
OUT should be a type that can be read atomically (e.g., Int, Long), or thread-safely (e.g., synchronized collections) because it will be read from other threads.
class CollectionAccumulator[T] extends AccumulatorV2[T, List[T]]
An accumulator for collecting a list of elements.
An accumulator for collecting a list of elements.

Since
2.0.0
class DoubleAccumulator extends AccumulatorV2[Double, Double]
An accumulator for computing sum, count, and averages for double precision floating numbers.
An accumulator for computing sum, count, and averages for double precision floating numbers.

Since
2.0.0
class EnumUtil extends AnyRef
class LongAccumulator extends AccumulatorV2[Long, Long]
An accumulator for computing sum, count, and average of 64-bit integers.
An accumulator for computing sum, count, and average of 64-bit integers.

Since
2.0.0
case class MutablePair[T1, T2](_1: T1, _2: T2) extends Product2[T1, T2] with Product with Serializable
:: DeveloperApi :: A tuple of 2 elements.
:: DeveloperApi :: A tuple of 2 elements. This can be used as an alternative to Scala's Tuple2 when we want to minimize object allocation.
_1
Element 1 of this MutablePair
_2
Element 2 of this MutablePair

Annotations
@DeveloperApi()
class StatCounter extends Serializable
A class for tracking the statistics of a set of numbers (count, mean and variance) in a numerically robust way.
A class for tracking the statistics of a set of numbers (count, mean and variance) in a numerically robust way. Includes support for merging two StatCounters. Based on Welford and Chan's algorithms for running variance.
trait TaskCompletionListener extends EventListener
:: DeveloperApi ::
:: DeveloperApi ::
Listener providing a callback function to invoke when a task's execution completes.

Annotations
@DeveloperApi()
trait TaskFailureListener extends EventListener
:: DeveloperApi ::
:: DeveloperApi ::
Listener providing a callback function to invoke when a task's execution encounters an error. Operations defined here must be idempotent, as onTaskFailure can be called multiple times.

Annotations
@DeveloperApi()

Value Members

object SizeEstimator extends Logging
:: DeveloperApi :: Estimates the sizes of Java objects (number of bytes of memory they occupy), for use in memory-aware caches.
:: DeveloperApi :: Estimates the sizes of Java objects (number of bytes of memory they occupy), for use in memory-aware caches.
Based on the following JavaWorld article: http://www.javaworld.com/javaworld/javaqa/2003-12/02-qa-1226-sizeof.html

Annotations
@DeveloperApi()
object StatCounter extends Serializable

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