hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/RandomCandidateGenerator.java

/*
 * 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
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 */
package org.apache.hadoop.hbase.master.balancer;

import org.apache.yetus.audience.InterfaceAudience;

@InterfaceAudience.Private
class RandomCandidateGenerator extends CandidateGenerator {

  @Override
  BalanceAction generate(BalancerClusterState cluster) {
    int thisServer = pickRandomServer(cluster);

    // Pick the other server
    int otherServer = pickOtherRandomServer(cluster, thisServer);

    return pickRandomRegions(cluster, thisServer, otherServer);
  }
}