org.apache.hadoop.hbase.replication.ReplicationTracker Maven / Gradle / Ivy
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*
* Licensed to the Apache Software Foundation (ASF) under one
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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
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*/
package org.apache.hadoop.hbase.replication;
import java.util.List;
import org.apache.yetus.audience.InterfaceAudience;
/**
* This is the interface for a Replication Tracker. A replication tracker provides the facility to
* subscribe and track events that reflect a change in replication state. These events are used by
* the ReplicationSourceManager to coordinate replication tasks such as addition/deletion of queues
* and queue failover. These events are defined in the ReplicationListener interface. If a class
* would like to listen to replication events it must implement the ReplicationListener interface
* and register itself with a Replication Tracker.
*/
@InterfaceAudience.Private
public interface ReplicationTracker {
/**
* Register a replication listener to receive replication events.
* @param listener
*/
public void registerListener(ReplicationListener listener);
public void removeListener(ReplicationListener listener);
/**
* Returns a list of other live region servers in the cluster.
* @return List of region servers.
*/
public List getListOfRegionServers();
}