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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
47
48
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
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
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
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
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
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
111 Log.info("Loading r3 to v3 into " + Bytes.toString(TABLENAME));
112 putDataAndVerify(table, "r3", FAMILY, "v3", 3);
113
114
115 Log.info("Killing target server " + targetServer.getServerName());
116 targetServer.kill();
117 cluster.getRegionServerThreads().get(targetServerNum).join();
118
119 while (master.getServerManager().areDeadServersInProgress()) {
120 Thread.sleep(5);
121 }
122
123 Log.info("Killing origin server " + targetServer.getServerName());
124 originServer.kill();
125 cluster.getRegionServerThreads().get(originServerNum).join();
126
127
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 }