org.apache.hadoop.mapreduce.v2.app.speculate
Interface Speculator

All Superinterfaces:

org.apache.hadoop.yarn.event.EventHandler<SpeculatorEvent>

All Known Implementing Classes:

DefaultSpeculator

public interface Speculator
extends org.apache.hadoop.yarn.event.EventHandler<SpeculatorEvent>

Speculator component. Task Attempts' status updates are sent to this component. Concrete implementation runs the speculative algorithm and sends the TaskEventType.T_ADD_ATTEMPT. An implementation also has to arrange for the jobs to be scanned from time to time, to launch the speculations.

Nested Class Summary

static class

Speculator.EventType

Method Summary

void	handleAttempt(TaskAttemptStatusUpdateEvent.TaskAttemptStatus status)

Methods inherited from interface org.apache.hadoop.yarn.event.EventHandler

handle

Method Detail

handleAttempt

void handleAttempt(TaskAttemptStatusUpdateEvent.TaskAttemptStatus status)