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• ShuffleFetcher.scala

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spark.ShuffleFetcher.scala Maven / Gradle / Ivy

package spark

private[spark] abstract class ShuffleFetcher {
  /**
   * Fetch the shuffle outputs for a given ShuffleDependency.
   * @return An iterator over the elements of the fetched shuffle outputs.
   */
  def fetch[K, V](shuffleId: Int, reduceId: Int) : Iterator[(K, V)]

  /** Stop the fetcher */
  def stop() {}
}