/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* 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
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.master.balancer;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.master.LoadBalancer;
import org.apache.hadoop.util.ReflectionUtils;
/**
* The class that creates a load balancer from a conf.
*/
@InterfaceAudience.Private
public class LoadBalancerFactory {
/**
* Create a loadblanacer from the given conf.
* @param conf
* @return A {@link LoadBalancer}
*/
public static LoadBalancer getLoadBalancer(Configuration conf) {
// Create the balancer
Class<? extends LoadBalancer> balancerKlass =
conf.getClass(HConstants.HBASE_MASTER_LOADBALANCER_CLASS, StochasticLoadBalancer.class,
LoadBalancer.class);
return ReflectionUtils.newInstance(balancerKlass, conf);
}
}