Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/3193#discussion_r20244905
--- Diff: python/pyspark/rdd.py ---
@@ -316,6 +316,34 @@ def sample(self, withReplacement, fraction, seed=None):
assert fraction >= 0.0, "Negative fraction value: %s" % fraction
return self.mapPartitionsWithIndex(RDDSampler(withReplacement,
fraction, seed).func, True)
+ def randomSplit(self, weights, seed=None):
+ """
+ Randomly splits this RDD with the provided weights.
+
+ :param weights: weights for splits, will be normalized if they
don't sum to 1
+ :param seed: random seed
+ :return: split RDDs in an list
--- End diff --
"an list" -> "a list"
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