001/*
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one
004 * or more contributor license agreements.  See the NOTICE file
005 * distributed with this work for additional information
006 * regarding copyright ownership.  The ASF licenses this file
007 * to you under the Apache License, Version 2.0 (the
008 * "License"); you may not use this file except in compliance
009 * with the License.  You may obtain a copy of the License at
010 *
011 *     http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 */
019
020package org.apache.hadoop.hbase.util;
021
022import org.apache.hadoop.hbase.ServerName;
023import org.apache.hadoop.hbase.client.Admin;
024import org.apache.hadoop.hbase.client.RegionInfo;
025import org.apache.yetus.audience.InterfaceAudience;
026import org.slf4j.Logger;
027import org.slf4j.LoggerFactory;
028
029import java.util.List;
030import java.util.concurrent.Callable;
031
032/**
033 * Move Regions without Acknowledging.Usefule in case of RS shutdown as we might want to shut the
034 * RS down anyways and not abort on a stuck region. Improves movement performance
035 */
036@InterfaceAudience.Private
037class MoveWithoutAck implements Callable<Boolean> {
038
039  private static final Logger LOG = LoggerFactory.getLogger(MoveWithoutAck.class);
040
041  private final RegionInfo region;
042  private final ServerName targetServer;
043  private final List<RegionInfo> movedRegions;
044  private final ServerName sourceServer;
045  private final Admin admin;
046
047  MoveWithoutAck(Admin admin, RegionInfo regionInfo, ServerName sourceServer,
048    ServerName targetServer, List<RegionInfo> movedRegions) {
049    this.admin = admin;
050    this.region = regionInfo;
051    this.targetServer = targetServer;
052    this.movedRegions = movedRegions;
053    this.sourceServer = sourceServer;
054  }
055
056  @Override
057  public Boolean call() {
058    try {
059      LOG.info("Moving region: {} from {} to {}", region.getEncodedName(), sourceServer,
060        targetServer);
061      admin.move(region.getEncodedNameAsBytes(), targetServer);
062      LOG.info("Requested move {} from {} to {}", region.getEncodedName(), sourceServer,
063        targetServer);
064    } catch (Exception e) {
065      LOG.error("Error Moving Region: {}", region.getEncodedName(), e);
066    } finally {
067      movedRegions.add(region);
068    }
069    return true;
070  }
071}