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.chaos.actions;
019
020import org.apache.hadoop.hbase.HBaseTestingUtility;
021import org.apache.hadoop.hbase.TableName;
022import org.apache.hadoop.hbase.client.Admin;
023
024import java.io.IOException;
025import java.util.concurrent.ThreadLocalRandom;
026
027
028public class SplitAllRegionOfTableAction extends Action {
029  private static final int DEFAULT_MAX_SPLITS = 3;
030  private static final String MAX_SPLIT_KEY = "hbase.chaosmonkey.action.maxFullTableSplits";
031
032  private final TableName tableName;
033  private int maxFullTableSplits = DEFAULT_MAX_SPLITS;
034  private int splits = 0;
035
036  public SplitAllRegionOfTableAction(TableName tableName) {
037    this.tableName = tableName;
038  }
039
040
041  public void init(ActionContext context) throws IOException {
042    super.init(context);
043    this.maxFullTableSplits = getConf().getInt(MAX_SPLIT_KEY, DEFAULT_MAX_SPLITS);
044  }
045
046  @Override
047  public void perform() throws Exception {
048    HBaseTestingUtility util = context.getHBaseIntegrationTestingUtility();
049    Admin admin = util.getAdmin();
050    // Don't try the split if we're stopping
051    if (context.isStopping()) {
052      return;
053    }
054
055
056    // Don't always split. This should allow splitting of a full table later in the run
057    if (ThreadLocalRandom.current().nextDouble()
058        < (((double) splits) / ((double) maxFullTableSplits)) / ((double) 2)) {
059      splits++;
060      LOG.info("Performing action: Split all regions of  " + tableName);
061      admin.split(tableName);
062    } else {
063      LOG.info("Skipping split of all regions.");
064    }
065  }
066}