Class

org.apache.spark.rdd

RDDBarrier

Related Doc: package rdd

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class RDDBarrier[T] extends AnyRef

:: Experimental :: Wraps an RDD in a barrier stage, which forces Spark to launch tasks of this stage together. org.apache.spark.rdd.RDDBarrier instances are created by org.apache.spark.rdd.RDD#barrier.

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@Experimental() @Since( "2.4.0" )
Source
RDDBarrier.scala
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  12. def mapPartitions[S](f: (Iterator[T]) ⇒ Iterator[S], preservesPartitioning: Boolean = false)(implicit arg0: ClassTag[S]): RDD[S]

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    :: Experimental :: Returns a new RDD by applying a function to each partition of the wrapped RDD, where tasks are launched together in a barrier stage.

    :: Experimental :: Returns a new RDD by applying a function to each partition of the wrapped RDD, where tasks are launched together in a barrier stage. The interface is the same as org.apache.spark.rdd.RDD#mapPartitions. Please see the API doc there.

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    @Experimental() @Since( "2.4.0" )
    See also

    org.apache.spark.BarrierTaskContext

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