reducer_estimation

Type Members

1. case class FallbackEstimator(first: ReducerEstimator, fallback: ReducerEstimator) extends ReducerEstimator with Product with Serializable

2. sealed trait FlowStepHistory extends AnyRef

   Info about a prior FlowStep, provided by implementers of HistoryService

3. case class FlowStrategyInfo(flow: Flow[JobConf], predecessorSteps: Seq[FlowStep[JobConf]], step: FlowStep[JobConf]) extends Product with Serializable

4. trait HistoryService extends AnyRef

   Provider of information about prior runs.

5. class InputSizeReducerEstimator extends ReducerEstimator

   Estimator that uses the input size and a fixed "bytesPerReducer" target.

6. abstract class RatioBasedEstimator extends InputSizeReducerEstimator with HistoryService

7. class ReducerEstimator extends AnyRef