1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18 package org.apache.hadoop.hbase.master;
19
20 import static org.junit.Assert.assertEquals;
21 import static org.junit.Assert.assertFalse;
22 import static org.junit.Assert.assertNotNull;
23 import static org.mockito.Mockito.when;
24
25 import java.io.IOException;
26 import java.util.Collection;
27 import java.util.Iterator;
28 import java.util.List;
29
30 import org.apache.commons.logging.Log;
31 import org.apache.commons.logging.LogFactory;
32 import org.apache.hadoop.conf.Configuration;
33 import org.apache.hadoop.hbase.*;
34 import org.apache.hadoop.hbase.executor.EventHandler.EventType;
35 import org.apache.hadoop.hbase.master.AssignmentManager.RegionState;
36 import org.apache.hadoop.hbase.master.handler.OpenedRegionHandler;
37 import org.apache.hadoop.hbase.regionserver.HRegion;
38 import org.apache.hadoop.hbase.regionserver.HRegionServer;
39 import org.apache.hadoop.hbase.util.Bytes;
40 import org.apache.hadoop.hbase.util.MockServer;
41 import org.apache.hadoop.hbase.zookeeper.ZKAssign;
42 import org.apache.hadoop.hbase.zookeeper.ZKTable;
43 import org.apache.hadoop.hbase.zookeeper.ZKUtil;
44 import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
45 import org.apache.zookeeper.KeeperException;
46 import org.apache.zookeeper.data.Stat;
47 import org.junit.After;
48 import org.junit.Before;
49 import org.junit.Test;
50 import org.junit.experimental.categories.Category;
51 import org.mockito.Mockito;
52
53 @Category(MediumTests.class)
54 public class TestOpenedRegionHandler {
55
56 private static final Log LOG = LogFactory
57 .getLog(TestOpenedRegionHandler.class);
58
59 private HBaseTestingUtility TEST_UTIL;
60 private final int NUM_MASTERS = 1;
61 private final int NUM_RS = 1;
62 private Configuration conf;
63 private Configuration resetConf;
64 private ZooKeeperWatcher zkw;
65
66 @Before
67 public void setUp() throws Exception {
68 conf = HBaseConfiguration.create();
69 TEST_UTIL = new HBaseTestingUtility(conf);
70 }
71
72 @After
73 public void tearDown() throws Exception {
74
75 TEST_UTIL.shutdownMiniCluster();
76 TEST_UTIL = new HBaseTestingUtility(resetConf);
77 }
78
79 @Test
80 public void testOpenedRegionHandlerOnMasterRestart() throws Exception {
81
82 log("Starting cluster");
83 conf = HBaseConfiguration.create();
84 resetConf = conf;
85 conf.setInt("hbase.master.assignment.timeoutmonitor.period", 2000);
86 conf.setInt("hbase.master.assignment.timeoutmonitor.timeout", 5000);
87 TEST_UTIL = new HBaseTestingUtility(conf);
88 TEST_UTIL.startMiniCluster(NUM_MASTERS, NUM_RS);
89 String tableName = "testOpenedRegionHandlerOnMasterRestart";
90 MiniHBaseCluster cluster = createRegions(tableName);
91 abortMaster(cluster);
92
93 HRegionServer regionServer = cluster.getRegionServer(0);
94 HRegion region = getRegionBeingServed(cluster, regionServer);
95
96
97
98 zkw = HBaseTestingUtility.createAndForceNodeToOpenedState(TEST_UTIL,
99 region, regionServer.getServerName());
100
101
102 log("Starting up a new master");
103 cluster.startMaster().getMaster();
104 log("Waiting for master to be ready");
105 cluster.waitForActiveAndReadyMaster();
106 log("Master is ready");
107
108
109 log("Waiting for no more RIT");
110 ZKAssign.blockUntilNoRIT(zkw);
111 }
112 @Test
113 public void testShouldNotCompeleteOpenedRegionSuccessfullyIfVersionMismatches()
114 throws Exception {
115 HRegion region = null;
116 try {
117 int testIndex = 0;
118 TEST_UTIL.startMiniZKCluster();
119 final Server server = new MockServer(TEST_UTIL);
120 HTableDescriptor htd = new HTableDescriptor(
121 "testShouldNotCompeleteOpenedRegionSuccessfullyIfVersionMismatches");
122 HRegionInfo hri = new HRegionInfo(htd.getName(),
123 Bytes.toBytes(testIndex), Bytes.toBytes(testIndex + 1));
124 region = HRegion.createHRegion(hri, TEST_UTIL.getDataTestDir(), TEST_UTIL.getConfiguration(), htd);
125 assertNotNull(region);
126 AssignmentManager am = Mockito.mock(AssignmentManager.class);
127 when(am.isRegionInTransition(hri)).thenReturn(
128 new RegionState(region.getRegionInfo(), RegionState.State.OPEN,
129 System.currentTimeMillis(), server.getServerName()));
130
131 zkw = HBaseTestingUtility.createAndForceNodeToOpenedState(TEST_UTIL,
132 region, server.getServerName());
133 when(am.getZKTable()).thenReturn(new ZKTable(zkw));
134 Stat stat = new Stat();
135 String nodeName = ZKAssign.getNodeName(zkw, region.getRegionInfo()
136 .getEncodedName());
137 ZKUtil.getDataAndWatch(zkw, nodeName, stat);
138
139
140 OpenedRegionHandler handler = new OpenedRegionHandler(server, am, region
141 .getRegionInfo(), server.getServerName(), stat.getVersion());
142
143 ZKAssign.transitionNode(zkw, region.getRegionInfo(), server
144 .getServerName(), EventType.RS_ZK_REGION_OPENED,
145 EventType.RS_ZK_REGION_OPENED, stat.getVersion());
146
147
148
149 boolean expectedException = false;
150 try {
151 handler.process();
152 } catch (Exception e) {
153 expectedException = true;
154 }
155 assertFalse("The process method should not throw any exception.",
156 expectedException);
157 List<String> znodes = ZKUtil.listChildrenAndWatchForNewChildren(zkw,
158 zkw.assignmentZNode);
159 String regionName = znodes.get(0);
160 assertEquals("The region should not be opened successfully.", regionName,
161 region.getRegionInfo().getEncodedName());
162 } finally {
163 region.close();
164 region.getLog().closeAndDelete();
165 TEST_UTIL.shutdownMiniZKCluster();
166 }
167 }
168 private MiniHBaseCluster createRegions(String tableName)
169 throws InterruptedException, ZooKeeperConnectionException, IOException,
170 KeeperException {
171 MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
172 log("Waiting for active/ready master");
173 cluster.waitForActiveAndReadyMaster();
174 zkw = new ZooKeeperWatcher(conf, "testOpenedRegionHandler", null);
175
176
177 byte[] table = Bytes.toBytes(tableName);
178 byte[] family = Bytes.toBytes("family");
179 TEST_UTIL.createTable(table, family);
180
181
182 log("Waiting for no more RIT");
183 ZKAssign.blockUntilNoRIT(zkw);
184
185 return cluster;
186 }
187 private void abortMaster(MiniHBaseCluster cluster) {
188
189 log("Aborting master");
190 cluster.abortMaster(0);
191 cluster.waitOnMaster(0);
192 log("Master has aborted");
193 }
194 private HRegion getRegionBeingServed(MiniHBaseCluster cluster,
195 HRegionServer regionServer) {
196 Collection<HRegion> onlineRegionsLocalContext = regionServer
197 .getOnlineRegionsLocalContext();
198 Iterator<HRegion> iterator = onlineRegionsLocalContext.iterator();
199 HRegion region = null;
200 while (iterator.hasNext()) {
201 region = iterator.next();
202 if (!region.getRegionInfo().isMetaTable()) {
203 break;
204 }
205 }
206 return region;
207 }
208 private void log(String msg) {
209 LOG.debug("\n\nTRR: " + msg + "\n");
210 }
211
212 @org.junit.Rule
213 public org.apache.hadoop.hbase.ResourceCheckerJUnitRule cu =
214 new org.apache.hadoop.hbase.ResourceCheckerJUnitRule();
215 }
216