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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.HBaseTestingUtility;
22  import org.apache.hadoop.hbase.TableName;
23  import org.apache.hadoop.hbase.client.Admin;
24  
25  /**
26  * Action that tries to flush a table.
27  */
28  public class FlushTableAction extends Action {
29    private final long sleepTime;
30    private final TableName tableName;
31  
32    public FlushTableAction(TableName tableName) {
33      this(-1, tableName);
34    }
35  
36    public FlushTableAction(int sleepTime, TableName tableName) {
37      this.sleepTime = sleepTime;
38      this.tableName = tableName;
39    }
40  
41    @Override
42    public void perform() throws Exception {
43      HBaseTestingUtility util = context.getHBaseIntegrationTestingUtility();
44      Admin admin = util.getHBaseAdmin();
45  
46      // Don't try the flush if we're stopping
47      if (context.isStopping()) {
48        return;
49      }
50  
51      LOG.info("Performing action: Flush table " + tableName);
52      try {
53        admin.flush(tableName);
54      } catch (Exception ex) {
55        LOG.warn("Flush failed, might be caused by other chaos: " + ex.getMessage());
56      }
57      if (sleepTime > 0) {
58        Thread.sleep(sleepTime);
59      }
60    }
61  }