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; 021import org.apache.hadoop.hbase.HBaseTestingUtility; 022import org.apache.hadoop.hbase.TableName; 023import org.apache.hadoop.hbase.client.Admin; 024import org.apache.hadoop.hbase.client.TableDescriptor; 025import org.apache.hadoop.hbase.client.TableDescriptorBuilder; 026import org.apache.hadoop.hbase.regionserver.ConstantSizeRegionSplitPolicy; 027import org.apache.hadoop.hbase.regionserver.DisabledRegionSplitPolicy; 028import org.apache.hadoop.hbase.regionserver.IncreasingToUpperBoundRegionSplitPolicy; 029import org.slf4j.Logger; 030import org.slf4j.LoggerFactory; 031 032public class ChangeSplitPolicyAction extends Action { 033 private static final Logger LOG = LoggerFactory.getLogger(ChangeSplitPolicyAction.class); 034 private final TableName tableName; 035 private final String[] possiblePolicies; 036 private final Random random; 037 038 public ChangeSplitPolicyAction(TableName tableName) { 039 this.tableName = tableName; 040 possiblePolicies = new String[] { 041 IncreasingToUpperBoundRegionSplitPolicy.class.getName(), 042 ConstantSizeRegionSplitPolicy.class.getName(), 043 DisabledRegionSplitPolicy.class.getName() 044 }; 045 this.random = new Random(); 046 } 047 048 @Override protected Logger getLogger() { 049 return LOG; 050 } 051 052 @Override 053 public void perform() throws Exception { 054 HBaseTestingUtility util = context.getHBaseIntegrationTestingUtility(); 055 Admin admin = util.getAdmin(); 056 057 getLogger().info("Performing action: Change split policy of table " + tableName); 058 TableDescriptor tableDescriptor = admin.getDescriptor(tableName); 059 TableDescriptorBuilder builder = TableDescriptorBuilder.newBuilder(tableDescriptor); 060 String chosenPolicy = possiblePolicies[random.nextInt(possiblePolicies.length)]; 061 builder.setRegionSplitPolicyClassName(chosenPolicy); 062 getLogger().info("Changing " + tableName + " split policy to " + chosenPolicy); 063 admin.modifyTable(builder.build()); 064 } 065}