org.apache.mahout.drivers

MahoutSparkDriver

abstract class MahoutSparkDriver extends MahoutDriver

Extend this class to create a Mahout CLI driver. Minimally you must override process and main. Also define a Map of options for the command line parser. The following template may help:

object SomeDriver extends MahoutDriver {

// define only the options specific to this driver, inherit the generic ones
private final val SomeOptions = HashMap[String, Any](
    "maxThings" -> 500,
    "minThings" -> 100,
    "appName" -> "SomeDriver")

override def main(args: Array[String]): Unit = {

  val parser = new MahoutOptionParser(programName = "shortname") {
    head("somedriver", "Mahout 1.0-SNAPSHOT")

    // Input output options, non-driver specific
    parseIOOptions()

    // Algorithm specific options
    // Add in the new options
    opts = opts ++ SomeOptions
    note("\nAlgorithm control options:")
    opt[Int]("maxThings") abbr ("mt") action { (x, options) =>
      options + ("maxThings" -> x) ...
  }
  parser.parse(args, parser.opts) map { opts =>
    parser.opts = opts
    process()
  }
}

override def process: Unit = {
  start() // override to change the default Kryo or SparkConf before the distributed context is created
  // do the work here
  stop()
}
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Instance Constructors

  1. new MahoutSparkDriver()

Abstract Value Members

  1. abstract def main(args: Array[String]): Unit

    Definition Classes
    MahoutDriver
  2. abstract def process(): Unit

    Attributes
    protected
    Definition Classes
    MahoutDriver

Concrete Value Members

  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  2. final def !=(arg0: Any): Boolean

    Definition Classes
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  3. final def ##(): Int

    Definition Classes
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  4. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  5. final def ==(arg0: Any): Boolean

    Definition Classes
    Any
  6. var _useExistingContext: Boolean

    Definition Classes
    MahoutDriver
  7. final def asInstanceOf[T0]: T0

    Definition Classes
    Any
  8. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
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    @throws( ... )
  9. final def eq(arg0: AnyRef): Boolean

    Definition Classes
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  10. def equals(arg0: Any): Boolean

    Definition Classes
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  11. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
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    @throws( classOf[java.lang.Throwable] )
  12. final def getClass(): Class[_]

    Definition Classes
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  13. def hashCode(): Int

    Definition Classes
    AnyRef → Any
  14. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any
  15. implicit var mc: DistributedContext

    Attributes
    protected
    Definition Classes
    MahoutDriver
  16. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  17. final def notify(): Unit

    Definition Classes
    AnyRef
  18. final def notifyAll(): Unit

    Definition Classes
    AnyRef
  19. implicit var parser: MahoutOptionParser

    Attributes
    protected
    Definition Classes
    MahoutDriver
  20. implicit var sparkConf: SparkConf

  21. def start(): Unit

    Creates a Spark context to run the job inside.

    Creates a Spark context to run the job inside. Override to set the SparkConf values specific to the job, these must be set before the context is created.

    Attributes
    protected
    Definition Classes
    MahoutSparkDriver → MahoutDriver
  22. def stop(): Unit

    Attributes
    protected
    Definition Classes
    MahoutDriver
  23. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef
  24. def toString(): String

    Definition Classes
    AnyRef → Any
  25. def useContext(context: DistributedContext): Unit

    Call this before start to use an existing context as when running multiple drivers from a scalatest suite.

    Call this before start to use an existing context as when running multiple drivers from a scalatest suite.

    context

    An already set up context to run against

  26. final def wait(): Unit

    Definition Classes
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    @throws( ... )
  27. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
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    @throws( ... )
  28. final def wait(arg0: Long): Unit

    Definition Classes
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    @throws( ... )

Inherited from MahoutDriver

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