001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.hadoop.hbase.chaos.actions;
020
021import org.slf4j.Logger;
022import org.slf4j.LoggerFactory;
023
024/**
025* Action that tries to force a balancer run.
026*/
027public class ForceBalancerAction extends Action {
028  private static final Logger LOG =
029      LoggerFactory.getLogger(ForceBalancerAction.class);
030
031  @Override
032  public void perform() throws Exception {
033    // Don't try the flush if we're stopping
034    if (context.isStopping()) {
035      return;
036    }
037    LOG.info("Balancing regions");
038    forceBalancer();
039  }
040}