1 /**
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package org.apache.hadoop.hbase.chaos.factories;
20
21 import org.apache.hadoop.hbase.chaos.actions.UnbalanceKillAndRebalanceAction;
22 import org.apache.hadoop.hbase.chaos.monkies.ChaosMonkey;
23 import org.apache.hadoop.hbase.chaos.monkies.PolicyBasedChaosMonkey;
24 import org.apache.hadoop.hbase.chaos.policies.PeriodicRandomActionPolicy;
25 import org.apache.hadoop.hbase.chaos.policies.Policy;
26
27 public class UnbalanceMonkeyFactory extends MonkeyFactory {
28 /** How often to introduce the chaos. If too frequent, sequence of kills on minicluster
29 * can cause test to fail when Put runs out of retries. */
30 private static final long CHAOS_EVERY_MS = 65 * 1000;
31
32 @Override
33 public ChaosMonkey build() {
34 Policy chaosPolicy = new PeriodicRandomActionPolicy(
35 CHAOS_EVERY_MS,
36 new UnbalanceKillAndRebalanceAction()
37 );
38
39 return new PolicyBasedChaosMonkey(util, chaosPolicy);
40 }
41 }