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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  package org.apache.hadoop.hbase.regionserver;
19  
20  import static org.junit.Assert.*;
21  
22  import java.io.IOException;
23  import java.util.ArrayList;
24  import java.util.List;
25  
26  import org.apache.hadoop.hbase.HBaseTestingUtility;
27  import org.apache.hadoop.hbase.HColumnDescriptor;
28  import org.apache.hadoop.hbase.HRegionInfo;
29  import org.apache.hadoop.hbase.HTableDescriptor;
30  import org.apache.hadoop.hbase.MiniHBaseCluster;
31  import org.apache.hadoop.hbase.TableName;
32  import org.apache.hadoop.hbase.client.HBaseAdmin;
33  import org.apache.hadoop.hbase.client.HTable;
34  import org.apache.hadoop.hbase.client.Put;
35  import org.apache.hadoop.hbase.client.Result;
36  import org.apache.hadoop.hbase.client.ResultScanner;
37  import org.apache.hadoop.hbase.client.Scan;
38  import org.apache.hadoop.hbase.master.HMaster;
39  import org.apache.hadoop.hbase.util.Bytes;
40  import org.apache.hadoop.hbase.MediumTests;
41  import org.junit.Test;
42  import org.junit.experimental.categories.Category;
43  import org.mortbay.log.Log;
44  
45  /**
46   * Tests that need to spin up a cluster testing an {@link HRegion}.  Use
47   * {@link TestHRegion} if you don't need a cluster, if you can test w/ a
48   * standalone {@link HRegion}.
49   */
50  @Category(MediumTests.class)
51  public class TestHRegionOnCluster {
52    private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
53  
54    @Test (timeout=300000)
55    public void testDataCorrectnessReplayingRecoveredEdits() throws Exception {
56      final int NUM_MASTERS = 1;
57      final int NUM_RS = 3;
58      TEST_UTIL.startMiniCluster(NUM_MASTERS, NUM_RS);
59  
60      try {
61        final byte[] TABLENAME = Bytes
62            .toBytes("testDataCorrectnessReplayingRecoveredEdits");
63        final byte[] FAMILY = Bytes.toBytes("family");
64        MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
65        HMaster master = cluster.getMaster();
66  
67        // Create table
68        HTableDescriptor desc = new HTableDescriptor(TableName.valueOf(TABLENAME));
69        desc.addFamily(new HColumnDescriptor(FAMILY));
70        HBaseAdmin hbaseAdmin = TEST_UTIL.getHBaseAdmin();
71        hbaseAdmin.createTable(desc);
72  
73        assertTrue(hbaseAdmin.isTableAvailable(TABLENAME));
74  
75        // Put data: r1->v1
76        Log.info("Loading r1 to v1 into " + Bytes.toString(TABLENAME));
77        HTable table = new HTable(TEST_UTIL.getConfiguration(), TABLENAME);
78        putDataAndVerify(table, "r1", FAMILY, "v1", 1);
79  
80        TEST_UTIL.waitUntilAllRegionsAssigned(table.getName());
81        // Move region to target server
82        HRegionInfo regionInfo = table.getRegionLocation("r1").getRegionInfo();
83        int originServerNum = cluster.getServerWith(regionInfo.getRegionName());
84        HRegionServer originServer = cluster.getRegionServer(originServerNum);
85        int targetServerNum = (originServerNum + 1) % NUM_RS;
86        HRegionServer targetServer = cluster.getRegionServer(targetServerNum);
87        assertFalse(originServer.equals(targetServer));
88  
89        TEST_UTIL.waitUntilAllRegionsAssigned(table.getName());
90        Log.info("Moving " + regionInfo.getEncodedName() + " to " + targetServer.getServerName());
91        hbaseAdmin.move(regionInfo.getEncodedNameAsBytes(),
92            Bytes.toBytes(targetServer.getServerName().getServerName()));
93        do {
94          Thread.sleep(1);
95        } while (cluster.getServerWith(regionInfo.getRegionName()) == originServerNum);
96  
97        // Put data: r2->v2
98        Log.info("Loading r2 to v2 into " + Bytes.toString(TABLENAME));
99        putDataAndVerify(table, "r2", FAMILY, "v2", 2);
100 
101       TEST_UTIL.waitUntilAllRegionsAssigned(table.getName());
102       // Move region to origin server
103       Log.info("Moving " + regionInfo.getEncodedName() + " to " + originServer.getServerName());
104       hbaseAdmin.move(regionInfo.getEncodedNameAsBytes(),
105           Bytes.toBytes(originServer.getServerName().getServerName()));
106       do {
107         Thread.sleep(1);
108       } while (cluster.getServerWith(regionInfo.getRegionName()) == targetServerNum);
109 
110       // Put data: r3->v3
111       Log.info("Loading r3 to v3 into " + Bytes.toString(TABLENAME));
112       putDataAndVerify(table, "r3", FAMILY, "v3", 3);
113 
114       // Kill target server
115       Log.info("Killing target server " + targetServer.getServerName());
116       targetServer.kill();
117       cluster.getRegionServerThreads().get(targetServerNum).join();
118       // Wait until finish processing of shutdown
119       while (master.getServerManager().areDeadServersInProgress()) {
120         Thread.sleep(5);
121       }
122       // Kill origin server
123       Log.info("Killing origin server " + targetServer.getServerName());
124       originServer.kill();
125       cluster.getRegionServerThreads().get(originServerNum).join();
126 
127       // Put data: r4->v4
128       Log.info("Loading r4 to v4 into " + Bytes.toString(TABLENAME));
129       putDataAndVerify(table, "r4", FAMILY, "v4", 4);
130 
131     } finally {
132       TEST_UTIL.shutdownMiniCluster();
133     }
134   }
135 
136   private void putDataAndVerify(HTable table, String row, byte[] family,
137       String value, int verifyNum) throws IOException {
138     System.out.println("=========Putting data :" + row);
139     Put put = new Put(Bytes.toBytes(row));
140     put.add(family, Bytes.toBytes("q1"), Bytes.toBytes(value));
141     table.put(put);
142     ResultScanner resultScanner = table.getScanner(new Scan());
143     List<Result> results = new ArrayList<Result>();
144     while (true) {
145       Result r = resultScanner.next();
146       if (r == null)
147         break;
148       results.add(r);
149     }
150     resultScanner.close();
151     if (results.size() != verifyNum) {
152       System.out.println(results);
153     }
154     assertEquals(verifyNum, results.size());
155   }
156 
157 }