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.actions;
20
21 import org.apache.hadoop.hbase.ServerName;
22
23 /**
24 * Action that tries to restart the HRegionServer holding Meta.
25 */
26 public class RestartRsHoldingMetaAction extends RestartActionBaseAction {
27 public RestartRsHoldingMetaAction(long sleepTime) {
28 super(sleepTime);
29 }
30 @Override
31 public void perform() throws Exception {
32 LOG.info("Performing action: Restart region server holding META");
33 ServerName server = cluster.getServerHoldingMeta();
34 if (server == null) {
35 LOG.warn("No server is holding .META. right now.");
36 return;
37 }
38 restartRs(server, sleepTime);
39 }
40 }