- 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.