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  • package root
    Definition Classes
    root
  • package io
    Definition Classes
    root
  • package tarantool
    Definition Classes
    io
  • package spark
    Definition Classes
    tarantool
  • package connector

    Tarantool connector for Apache Spark.

    Tarantool connector for Apache Spark.

    Call tarantoolSpace method on the SparkContext object to create a TarantoolRDD exposing Tarantool space as a Spark RDD.

    Example:

    Execute the following on a Cartridge router node (the tarantool/crud module must be installed):

    local crud = require('crud')

crud.insert('test_space', {1, nil, 'a1', 'Don Quixote', 'Miguel de Cervantes', 1605})
crud.insert('test_space', {2, nil, 'a2', 'The Great Gatsby', 'F. Scott Fitzgerald', 1925})
crud.insert('test_space', {3, nil, 'a3', 'War and Peace', 'Leo Tolstoy', 1869})

    Write the following in your Java client code:

    import io.tarantool.spark.connector._

val sparkMasterHost = "127.0.0.1"
val tarantoolRouterAddress = "127.0.0.1:3301"
val space = "test_space"

// Populate the Spark config with the address of a Cartridge router node and credentials:
val conf = new SparkConf(true)
conf.set ("tarantool.username", "admin")
conf.set ("tarantool.password", "testapp-cluster-cookie")
conf.set ("tarantool.hosts", tarantoolRouterAddress)

// Connect to the Spark cluster:
val sc = new SparkContext("spark://" + sparkMasterHost + ":7077", "example", conf)

// Read the space and print its contents:
val rdd = sc.tarantoolSpace(space)
rdd.toArray().foreach(println)

sc.stop()
    Definition Classes
    spark
  • package util
    Definition Classes
    connector
  • ScalaToJavaHelper
  • StringUtils
  • TarantoolCursorIterator
o

io.tarantool.spark.connector.util

ScalaToJavaHelper

object ScalaToJavaHelper

Provides helper methods for using Scala classes in the Java code

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  17. def toJavaBiFunction[T1, T2, R](f: (T1, T2) => R): BiFunction[T1, T2, R]

    Converts a Scala Function2 to a Java java.util.function.BiFunction

  18. def toJavaConsumer[T1, Void](f: (T1) => Void): Consumer[T1]

    Converts a Scala Function1 to a Java java.util.function.Function

  19. def toJavaFunction[T1, R](f: (T1) => R): Function[T1, R]

    Converts a Scala Function1 to a Java java.util.function.Function

  20. def toJavaSupplier[R](f: () => R): Supplier[R]

    Converts a Scala "Supplier" to a Java java.util.function.Supplier

  21. def toJavaUnaryOperator[R](f: (R) => R): UnaryOperator[R]

    Converts a Scala Function1 to a Java java.util.function.UnaryOperator

  22. def toScalaFunction1[T1, R](f: Function[T1, R]): (T1) => R

    Converts a Java java.util.function.Function to a Scala Function1

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