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 java.util.Random; 021 022import org.apache.hadoop.hbase.HBaseTestingUtility; 023import org.apache.hadoop.hbase.TableName; 024import org.apache.hadoop.hbase.client.Admin; 025import org.apache.hadoop.hbase.client.TableDescriptor; 026import org.apache.hadoop.hbase.client.TableDescriptorBuilder; 027import org.apache.hadoop.hbase.regionserver.ConstantSizeRegionSplitPolicy; 028import org.apache.hadoop.hbase.regionserver.DisabledRegionSplitPolicy; 029import org.apache.hadoop.hbase.regionserver.IncreasingToUpperBoundRegionSplitPolicy; 030import org.slf4j.Logger; 031import org.slf4j.LoggerFactory; 032 033public class ChangeSplitPolicyAction extends Action { 034 private static final Logger LOG = LoggerFactory.getLogger(ChangeSplitPolicyAction.class); 035 private final TableName tableName; 036 private final String[] possiblePolicies; 037 private final Random random; 038 039 public ChangeSplitPolicyAction(TableName tableName) { 040 this.tableName = tableName; 041 possiblePolicies = new String[] { 042 IncreasingToUpperBoundRegionSplitPolicy.class.getName(), 043 ConstantSizeRegionSplitPolicy.class.getName(), 044 DisabledRegionSplitPolicy.class.getName() 045 }; 046 this.random = new Random(); 047 } 048 049 050 @Override 051 public void perform() throws Exception { 052 HBaseTestingUtility util = context.getHBaseIntegrationTestingUtility(); 053 Admin admin = util.getAdmin(); 054 055 LOG.info("Performing action: Change split policy of table " + tableName); 056 TableDescriptor tableDescriptor = admin.getDescriptor(tableName); 057 TableDescriptorBuilder builder = TableDescriptorBuilder.newBuilder(tableDescriptor); 058 String chosenPolicy = possiblePolicies[random.nextInt(possiblePolicies.length)]; 059 builder.setRegionSplitPolicyClassName(chosenPolicy); 060 LOG.info("Changing " + tableName + " split policy to " + chosenPolicy); 061 admin.modifyTable(builder.build()); 062 } 063}