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 */ 018 019package org.apache.hadoop.hbase.chaos.factories; 020 021import org.apache.hadoop.hbase.chaos.actions.Action; 022import org.apache.hadoop.hbase.chaos.actions.DumpClusterStatusAction; 023import org.apache.hadoop.hbase.chaos.actions.ForceBalancerAction; 024import org.apache.hadoop.hbase.chaos.actions.RestartActiveMasterAction; 025import org.apache.hadoop.hbase.chaos.actions.RestartRandomRsExceptMetaAction; 026import org.apache.hadoop.hbase.chaos.actions.RollingBatchRestartRsExceptMetaAction; 027import org.apache.hadoop.hbase.chaos.monkies.ChaosMonkey; 028import org.apache.hadoop.hbase.chaos.monkies.PolicyBasedChaosMonkey; 029import org.apache.hadoop.hbase.chaos.policies.CompositeSequentialPolicy; 030import org.apache.hadoop.hbase.chaos.policies.DoActionsOncePolicy; 031import org.apache.hadoop.hbase.chaos.policies.PeriodicRandomActionPolicy; 032 033/** 034 * Creates ChaosMonkeys for doing server restart actions, but not 035 * flush / compact / snapshot kind of actions. 036 */ 037public class ServerKillingMonkeyFactory extends MonkeyFactory { 038 039 @Override 040 public ChaosMonkey build() { 041 042 // Destructive actions to mess things around. Cannot run batch restart 043 Action[] actions1 = new Action[] { 044 new RestartRandomRsExceptMetaAction(60000), 045 new RestartActiveMasterAction(5000), 046 new RollingBatchRestartRsExceptMetaAction(5000, 1.0f, 2), //only allow 2 servers to be dead 047 new ForceBalancerAction() 048 }; 049 050 // Action to log more info for debugging 051 Action[] actions2 = new Action[] { 052 new DumpClusterStatusAction() 053 }; 054 055 return new PolicyBasedChaosMonkey(util, 056 new CompositeSequentialPolicy( 057 new DoActionsOncePolicy(60 * 1000, actions1), 058 new PeriodicRandomActionPolicy(60 * 1000, actions1)), 059 new PeriodicRandomActionPolicy(60 * 1000, actions2)); 060 } 061}