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 */
018package org.apache.hadoop.hbase.master.normalizer;
019
020import java.io.IOException;
021import org.apache.hadoop.hbase.ScheduledChore;
022import org.apache.hadoop.hbase.client.NormalizeTableFilterParams;
023import org.apache.hadoop.hbase.master.HMaster;
024import org.apache.hadoop.hbase.master.MasterServices;
025import org.apache.yetus.audience.InterfaceAudience;
026import org.slf4j.Logger;
027import org.slf4j.LoggerFactory;
028
029/**
030 * Chore that will periodically call
031 * {@link HMaster#normalizeRegions(NormalizeTableFilterParams, boolean)}.
032 */
033@InterfaceAudience.Private
034class RegionNormalizerChore extends ScheduledChore {
035  private static final Logger LOG = LoggerFactory.getLogger(RegionNormalizerChore.class);
036
037  private final MasterServices master;
038
039  public RegionNormalizerChore(MasterServices master) {
040    super(master.getServerName() + "-RegionNormalizerChore", master,
041      master.getConfiguration().getInt("hbase.normalizer.period", 300_000));
042    this.master = master;
043  }
044
045  @Override
046  protected void chore() {
047    try {
048      master.normalizeRegions(new NormalizeTableFilterParams.Builder().build(), false);
049    } catch (IOException e) {
050      LOG.error("Failed to normalize regions.", e);
051    }
052  }
053}