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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 }
77
78 @Test
79 public void testOpenedRegionHandlerOnMasterRestart() throws Exception {
80
81 log("Starting cluster");
82 conf = HBaseConfiguration.create();
83 resetConf = conf;
84 conf.setInt("hbase.master.assignment.timeoutmonitor.period", 2000);
85 conf.setInt("hbase.master.assignment.timeoutmonitor.timeout", 5000);
86 TEST_UTIL = new HBaseTestingUtility(conf);
87 TEST_UTIL.startMiniCluster(NUM_MASTERS, NUM_RS);
88 String tableName = "testOpenedRegionHandlerOnMasterRestart";
89 MiniHBaseCluster cluster = createRegions(tableName);
90 abortMaster(cluster);
91
92 HRegionServer regionServer = cluster.getRegionServer(0);
93 HRegion region = getRegionBeingServed(cluster, regionServer);
94
95
96
97 zkw = HBaseTestingUtility.createAndForceNodeToOpenedState(TEST_UTIL,
98 region, regionServer.getServerName());
99
100
101 log("Starting up a new master");
102 cluster.startMaster().getMaster();
103 log("Waiting for master to be ready");
104 cluster.waitForActiveAndReadyMaster();
105 log("Master is ready");
106
107
108 log("Waiting for no more RIT");
109 ZKAssign.blockUntilNoRIT(zkw);
110 }
111 @Test
112 public void testShouldNotCompeleteOpenedRegionSuccessfullyIfVersionMismatches()
113 throws Exception {
114 HRegion region = null;
115 try {
116 int testIndex = 0;
117 TEST_UTIL.startMiniZKCluster();
118 final Server server = new MockServer(TEST_UTIL);
119 HTableDescriptor htd = new HTableDescriptor(
120 "testShouldNotCompeleteOpenedRegionSuccessfullyIfVersionMismatches");
121 HRegionInfo hri = new HRegionInfo(htd.getName(),
122 Bytes.toBytes(testIndex), Bytes.toBytes(testIndex + 1));
123 region = HRegion.createHRegion(hri, TEST_UTIL.getDataTestDir(), TEST_UTIL.getConfiguration(), htd);
124 assertNotNull(region);
125 AssignmentManager am = Mockito.mock(AssignmentManager.class);
126 when(am.isRegionInTransition(hri)).thenReturn(
127 new RegionState(region.getRegionInfo(), RegionState.State.OPEN,
128 System.currentTimeMillis(), server.getServerName()));
129
130 zkw = HBaseTestingUtility.createAndForceNodeToOpenedState(TEST_UTIL,
131 region, server.getServerName());
132 when(am.getZKTable()).thenReturn(new ZKTable(zkw));
133 Stat stat = new Stat();
134 String nodeName = ZKAssign.getNodeName(zkw, region.getRegionInfo()
135 .getEncodedName());
136 ZKUtil.getDataAndWatch(zkw, nodeName, stat);
137
138
139 OpenedRegionHandler handler = new OpenedRegionHandler(server, am, region
140 .getRegionInfo(), server.getServerName(), stat.getVersion());
141
142 ZKAssign.transitionNode(zkw, region.getRegionInfo(), server
143 .getServerName(), EventType.RS_ZK_REGION_OPENED,
144 EventType.RS_ZK_REGION_OPENED, stat.getVersion());
145
146
147
148 boolean expectedException = false;
149 try {
150 handler.process();
151 } catch (Exception e) {
152 expectedException = true;
153 }
154 assertFalse("The process method should not throw any exception.",
155 expectedException);
156 List<String> znodes = ZKUtil.listChildrenAndWatchForNewChildren(zkw,
157 zkw.assignmentZNode);
158 String regionName = znodes.get(0);
159 assertEquals("The region should not be opened successfully.", regionName,
160 region.getRegionInfo().getEncodedName());
161 } finally {
162 region.close();
163 region.getLog().closeAndDelete();
164 TEST_UTIL.shutdownMiniZKCluster();
165 }
166 }
167 private MiniHBaseCluster createRegions(String tableName)
168 throws InterruptedException, ZooKeeperConnectionException, IOException,
169 KeeperException {
170 MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
171 log("Waiting for active/ready master");
172 cluster.waitForActiveAndReadyMaster();
173 zkw = new ZooKeeperWatcher(conf, "testOpenedRegionHandler", null);
174
175
176 byte[] table = Bytes.toBytes(tableName);
177 byte[] family = Bytes.toBytes("family");
178 TEST_UTIL.createTable(table, family);
179
180
181 log("Waiting for no more RIT");
182 ZKAssign.blockUntilNoRIT(zkw);
183
184 return cluster;
185 }
186 private void abortMaster(MiniHBaseCluster cluster) {
187
188 log("Aborting master");
189 cluster.abortMaster(0);
190 cluster.waitOnMaster(0);
191 log("Master has aborted");
192 }
193 private HRegion getRegionBeingServed(MiniHBaseCluster cluster,
194 HRegionServer regionServer) {
195 Collection<HRegion> onlineRegionsLocalContext = regionServer
196 .getOnlineRegionsLocalContext();
197 Iterator<HRegion> iterator = onlineRegionsLocalContext.iterator();
198 HRegion region = null;
199 while (iterator.hasNext()) {
200 region = iterator.next();
201 if (!region.getRegionInfo().isMetaTable()) {
202 break;
203 }
204 }
205 return region;
206 }
207 private void log(String msg) {
208 LOG.debug("\n\nTRR: " + msg + "\n");
209 }
210
211 @org.junit.Rule
212 public org.apache.hadoop.hbase.ResourceCheckerJUnitRule cu =
213 new org.apache.hadoop.hbase.ResourceCheckerJUnitRule();
214 }
215