This bolt is used for intermediate flatMapping before a grouping.
Its output storm-tuple contains a single scala.Tuple2[Long, U] at
the 0 position. The Long is the timestamp of the source object
from which U was derived. Each U is one of the output items of the
flatMapOp.
Linear Supertypes
BaseBolt, IRichBolt, IComponent, IBolt, Serializable, AnyRef, Any
This bolt is used for intermediate flatMapping before a grouping. Its output storm-tuple contains a single scala.Tuple2[Long, U] at the 0 position. The Long is the timestamp of the source object from which U was derived. Each U is one of the output items of the flatMapOp.