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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.client.HBaseAdmin;
23  import org.apache.hadoop.hbase.util.Bytes;
24  
25  /**
26  * Action that tries to flush a table.
27  */
28  public class FlushTableAction extends Action {
29    private final byte[] tableNameBytes;
30    private final long sleepTime;
31    private final String tableName;
32  
33    public FlushTableAction(String tableName) {
34      this(-1, tableName);
35    }
36  
37    public FlushTableAction(int sleepTime, String tableName) {
38      this.tableNameBytes = Bytes.toBytes(tableName);
39      this.sleepTime = sleepTime;
40      this.tableName = tableName;
41    }
42  
43    @Override
44    public void perform() throws Exception {
45      HBaseTestingUtility util = context.getHBaseIntegrationTestingUtility();
46      HBaseAdmin admin = util.getHBaseAdmin();
47  
48      LOG.info("Performing action: Flush table " + tableName);
49      try {
50        admin.flush(tableNameBytes);
51      } catch (Exception ex) {
52        LOG.warn("Flush failed, might be caused by other chaos: " + ex.getMessage());
53      }
54      if (sleepTime > 0) {
55        Thread.sleep(sleepTime);
56      }
57    }
58  }