ISpoutWaitStrategy.java

package backtype.storm.spout;

import java.util.Map;

/**
 * The strategy a spout needs to use when its waiting. Waiting is triggered in
 * one of two conditions:
 * 
 * 1. nextTuple emits no tuples 2. The spout has hit maxSpoutPending and can't
 * emit any more tuples
 * 
 * The default strategy sleeps for one millisecond.
 */
public interface ISpoutWaitStrategy {
	void prepare(Map conf);

	void emptyEmit(long streak);
}