Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/11517#discussion_r55492271 --- Diff: core/src/main/scala/org/apache/spark/util/random/RandomSampler.scala --- @@ -41,6 +41,12 @@ trait RandomSampler[T, U] extends Pseudorandom with Cloneable with Serializable /** take a random sample */ def sample(items: Iterator[T]): Iterator[U] + /** + * Whether to sample the next item or not. + * Return how many times the next item will be sampled. Return 0 if it is not sampled. + */ + def sample(): Int + --- End diff -- If #11578 is merged, I will rebase this.
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