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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
81 HRegionInfo regionInfo = table.getRegionLocation("r1").getRegionInfo();
82 int originServerNum = cluster.getServerWith(regionInfo.getRegionName());
83 HRegionServer originServer = cluster.getRegionServer(originServerNum);
84 int targetServerNum = (originServerNum + 1) % NUM_RS;
85 HRegionServer targetServer = cluster.getRegionServer(targetServerNum);
86 assertFalse(originServer.equals(targetServer));
87 Log.info("Moving " + regionInfo.getEncodedName() + " to " + targetServer.getServerName());
88 hbaseAdmin.move(regionInfo.getEncodedNameAsBytes(),
89 Bytes.toBytes(targetServer.getServerName().getServerName()));
90 do {
91 Thread.sleep(1);
92 } while (cluster.getServerWith(regionInfo.getRegionName()) == originServerNum);
93
94
95 Log.info("Loading r2 to v2 into " + Bytes.toString(TABLENAME));
96 putDataAndVerify(table, "r2", FAMILY, "v2", 2);
97
98
99 Log.info("Moving " + regionInfo.getEncodedName() + " to " + originServer.getServerName());
100 hbaseAdmin.move(regionInfo.getEncodedNameAsBytes(),
101 Bytes.toBytes(originServer.getServerName().getServerName()));
102 do {
103 Thread.sleep(1);
104 } while (cluster.getServerWith(regionInfo.getRegionName()) == targetServerNum);
105
106
107 Log.info("Loading r3 to v3 into " + Bytes.toString(TABLENAME));
108 putDataAndVerify(table, "r3", FAMILY, "v3", 3);
109
110
111 Log.info("Killing target server " + targetServer.getServerName());
112 targetServer.kill();
113 cluster.getRegionServerThreads().get(targetServerNum).join();
114
115 while (master.getServerManager().areDeadServersInProgress()) {
116 Thread.sleep(5);
117 }
118
119 Log.info("Killing origin server " + targetServer.getServerName());
120 originServer.kill();
121 cluster.getRegionServerThreads().get(originServerNum).join();
122
123
124 Log.info("Loading r4 to v4 into " + Bytes.toString(TABLENAME));
125 putDataAndVerify(table, "r4", FAMILY, "v4", 4);
126
127 } finally {
128 TEST_UTIL.shutdownMiniCluster();
129 }
130 }
131
132 private void putDataAndVerify(HTable table, String row, byte[] family,
133 String value, int verifyNum) throws IOException {
134 System.out.println("=========Putting data :" + row);
135 Put put = new Put(Bytes.toBytes(row));
136 put.add(family, Bytes.toBytes("q1"), Bytes.toBytes(value));
137 table.put(put);
138 ResultScanner resultScanner = table.getScanner(new Scan());
139 List<Result> results = new ArrayList<Result>();
140 while (true) {
141 Result r = resultScanner.next();
142 if (r == null)
143 break;
144 results.add(r);
145 }
146 resultScanner.close();
147 if (results.size() != verifyNum) {
148 System.out.println(results);
149 }
150 assertEquals(verifyNum, results.size());
151 }
152
153 }