pyspark.RDDBarrier

class pyspark.RDDBarrier(rdd)

Wraps an RDD in a barrier stage, which forces Spark to launch tasks of this stage together. RDDBarrier instances are created by RDD.barrier().

New in version 2.4.0.

Notes

This API is experimental

Methods

mapPartitions(f[, preservesPartitioning])	Returns a new RDD by applying a function to each partition of the wrapped RDD, where tasks are launched together in a barrier stage.
mapPartitionsWithIndex(f[, ...])	Returns a new RDD by applying a function to each partition of the wrapped RDD, while tracking the index of the original partition.