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  package org.apache.hadoop.hbase.util.hbck;
19  
20  import static org.apache.hadoop.hbase.util.hbck.HbckTestingUtil.assertErrors;
21  import static org.apache.hadoop.hbase.util.hbck.HbckTestingUtil.doFsck;
22  import static org.junit.Assert.assertEquals;
23  import static org.junit.Assert.assertTrue;
24  
25  import java.util.Arrays;
26  
27  import org.apache.hadoop.hbase.HBaseTestingUtility;
28  import org.apache.hadoop.hbase.HTableDescriptor;
29  import org.apache.hadoop.hbase.client.HConnectionManager;
30  import org.apache.hadoop.hbase.util.HBaseFsck;
31  import org.apache.hadoop.hbase.util.HBaseFsck.ErrorReporter.ERROR_CODE;
32  import org.apache.hadoop.hbase.zookeeper.ZKAssign;
33  import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
34  import org.junit.Test;
35  
36  /**
37   * This builds a table, removes info from meta, and then rebuilds meta.
38   */
39  public class TestOfflineMetaRebuildBase extends OfflineMetaRebuildTestCore {
40  
41    @Test(timeout = 120000)
42    public void testMetaRebuild() throws Exception {
43      wipeOutMeta();
44  
45      // is meta really messed up?
46      assertEquals(0, scanMeta());
47      assertErrors(doFsck(conf, false),
48          new ERROR_CODE[] { ERROR_CODE.NOT_IN_META_OR_DEPLOYED,
49              ERROR_CODE.NOT_IN_META_OR_DEPLOYED,
50              ERROR_CODE.NOT_IN_META_OR_DEPLOYED,
51              ERROR_CODE.NOT_IN_META_OR_DEPLOYED, });
52      // Note, would like to check # of tables, but this takes a while to time
53      // out.
54  
55      // shutdown the minicluster
56      TEST_UTIL.shutdownMiniHBaseCluster();
57      TEST_UTIL.shutdownMiniZKCluster();
58      HConnectionManager.deleteConnection(conf, false);
59  
60      // rebuild meta table from scratch
61      HBaseFsck fsck = new HBaseFsck(conf);
62      assertTrue(fsck.rebuildMeta());
63  
64      // bring up the minicluster
65      TEST_UTIL.startMiniZKCluster(); // tables seem enabled by default
66      TEST_UTIL.restartHBaseCluster(3);
67      
68      ZooKeeperWatcher zkw = HBaseTestingUtility.getZooKeeperWatcher(TEST_UTIL);
69      
70      LOG.info("Waiting for no more RIT");
71      ZKAssign.blockUntilNoRIT(zkw);
72      LOG.info("No more RIT in ZK, now doing final test verification");
73  
74      // everything is good again.
75      assertEquals(4, scanMeta());
76      HTableDescriptor[] htbls = TEST_UTIL.getHBaseAdmin().listTables();
77      LOG.info("Tables present after restart: " + Arrays.toString(htbls));
78  
79      assertEquals(1, htbls.length);
80      assertErrors(doFsck(conf, false), new ERROR_CODE[] {});
81      LOG.info("Table " + table + " has " + tableRowCount(conf, table)
82          + " entries.");
83      assertEquals(16, tableRowCount(conf, table));
84    }
85  
86  }