util

Type Members

1. abstract class AccumulatorV2[IN, OUT] extends Serializable

   The base class for accumulators, that can accumulate inputs of type IN, and produce output of type OUT.

2. class CollectionAccumulator[T] extends AccumulatorV2[T, List[T]]

   An accumulator for collecting a list of elements.

3. class DoubleAccumulator extends AccumulatorV2[Double, Double]

   An accumulator for computing sum, count, and averages for double precision floating numbers.

4. class EnumUtil extends AnyRef

5. class LegacyAccumulatorWrapper[R, T] extends AccumulatorV2[T, R]

6. class LongAccumulator extends AccumulatorV2[Long, Long]

   An accumulator for computing sum, count, and averages for 64-bit integers.

7. case class MutablePair[T1, T2](_1: T1, _2: T2) extends Product2[T1, T2] with Product with Serializable

   :: DeveloperApi :: A tuple of 2 elements.

8. class StatCounter extends Serializable

   A class for tracking the statistics of a set of numbers (count, mean and variance) in a numerically robust way.

9. trait TaskCompletionListener extends EventListener

   :: DeveloperApi ::

10. trait TaskFailureListener extends EventListener

    :: DeveloperApi ::