hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegionOnCluster.java

   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.assertEquals;
  21 import static org.junit.Assert.assertFalse;
  22 import static org.junit.Assert.assertTrue;
  23
  24 import java.io.IOException;
  25 import java.util.ArrayList;
  26 import java.util.List;
  27 import org.apache.hadoop.hbase.HBaseClassTestRule;
  28 import org.apache.hadoop.hbase.HBaseTestingUtil;
  29 import org.apache.hadoop.hbase.SingleProcessHBaseCluster;
  30 import org.apache.hadoop.hbase.TableName;
  31 import org.apache.hadoop.hbase.client.Admin;
  32 import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;
  33 import org.apache.hadoop.hbase.client.Put;
  34 import org.apache.hadoop.hbase.client.RegionInfo;
  35 import org.apache.hadoop.hbase.client.RegionLocator;
  36 import org.apache.hadoop.hbase.client.Result;
  37 import org.apache.hadoop.hbase.client.ResultScanner;
  38 import org.apache.hadoop.hbase.client.Scan;
  39 import org.apache.hadoop.hbase.client.Table;
  40 import org.apache.hadoop.hbase.client.TableDescriptor;
  41 import org.apache.hadoop.hbase.client.TableDescriptorBuilder;
  42 import org.apache.hadoop.hbase.master.HMaster;
  43 import org.apache.hadoop.hbase.testclassification.MediumTests;
  44 import org.apache.hadoop.hbase.testclassification.RegionServerTests;
  45 import org.apache.hadoop.hbase.util.Bytes;
  46 import org.junit.ClassRule;
  47 import org.junit.Rule;
  48 import org.junit.Test;
  49 import org.junit.experimental.categories.Category;
  50 import org.junit.rules.TestName;
  51 import org.slf4j.Logger;
  52 import org.slf4j.LoggerFactory;
  53
  54 /**
  55  * Tests that need to spin up a cluster testing an {@link HRegion}.  Use
  56  * {@link TestHRegion} if you don't need a cluster, if you can test w/ a
  57  * standalone {@link HRegion}.
  58  */
  59 @Category({RegionServerTests.class, MediumTests.class})
  60 public class TestHRegionOnCluster {
  61
  62   @ClassRule
  63   public static final HBaseClassTestRule CLASS_RULE =
  64       HBaseClassTestRule.forClass(TestHRegionOnCluster.class);
  65
  66   private static final Logger LOG = LoggerFactory.getLogger(TestHRegionOnCluster.class);
  67   private static final HBaseTestingUtil TEST_UTIL = new HBaseTestingUtil();
  68
  69   @Rule
  70   public TestName name = new TestName();
  71
  72   @Test
  73   public void testDataCorrectnessReplayingRecoveredEdits() throws Exception {
  74     final int NUM_RS = 3;
  75     Admin hbaseAdmin = null;
  76     TEST_UTIL.startMiniCluster(NUM_RS);
  77
  78     try {
  79       final TableName tableName = TableName.valueOf(name.getMethodName());
  80       final byte[] FAMILY = Bytes.toBytes("family");
  81       SingleProcessHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
  82       HMaster master = cluster.getMaster();
  83
  84       // Create table
  85       TableDescriptor tableDescriptor = TableDescriptorBuilder.newBuilder(tableName)
  86         .setColumnFamily(ColumnFamilyDescriptorBuilder.of(FAMILY)).build();
  87       hbaseAdmin = master.getConnection().getAdmin();
  88       hbaseAdmin.createTable(tableDescriptor);
  89
  90       assertTrue(hbaseAdmin.isTableAvailable(tableName));
  91
  92       // Put data: r1->v1
  93       LOG.info("Loading r1 to v1 into " + tableName);
  94       Table table = TEST_UTIL.getConnection().getTable(tableName);
  95       putDataAndVerify(table, "r1", FAMILY, "v1", 1);
  96
  97       TEST_UTIL.waitUntilAllRegionsAssigned(table.getName());
  98       // Move region to target server
  99
 100       RegionInfo regionInfo;
 101       try (RegionLocator locator = TEST_UTIL.getConnection().getRegionLocator(tableName)) {
 102         regionInfo = locator.getRegionLocation(Bytes.toBytes("r1")).getRegion();
 103       }
 104
 105       int originServerNum = cluster.getServerWith(regionInfo.getRegionName());
 106       HRegionServer originServer = cluster.getRegionServer(originServerNum);
 107       int targetServerNum = (originServerNum + 1) % NUM_RS;
 108       HRegionServer targetServer = cluster.getRegionServer(targetServerNum);
 109       assertFalse(originServer.equals(targetServer));
 110
 111       TEST_UTIL.waitUntilAllRegionsAssigned(table.getName());
 112       LOG.info("Moving " + regionInfo.getEncodedName() + " to " + targetServer.getServerName());
 113       hbaseAdmin.move(regionInfo.getEncodedNameAsBytes(), targetServer.getServerName());
 114       do {
 115         Thread.sleep(1);
 116       } while (cluster.getServerWith(regionInfo.getRegionName()) == originServerNum);
 117
 118       // Put data: r2->v2
 119       LOG.info("Loading r2 to v2 into " + tableName);
 120       putDataAndVerify(table, "r2", FAMILY, "v2", 2);
 121
 122       TEST_UTIL.waitUntilAllRegionsAssigned(table.getName());
 123       // Move region to origin server
 124       LOG.info("Moving " + regionInfo.getEncodedName() + " to " + originServer.getServerName());
 125       hbaseAdmin.move(regionInfo.getEncodedNameAsBytes(), originServer.getServerName());
 126       do {
 127         Thread.sleep(1);
 128       } while (cluster.getServerWith(regionInfo.getRegionName()) == targetServerNum);
 129
 130       // Put data: r3->v3
 131       LOG.info("Loading r3 to v3 into " + tableName);
 132       putDataAndVerify(table, "r3", FAMILY, "v3", 3);
 133
 134       // Kill target server
 135       LOG.info("Killing target server " + targetServer.getServerName());
 136       targetServer.kill();
 137       cluster.getRegionServerThreads().get(targetServerNum).join();
 138       // Wait until finish processing of shutdown
 139       while (master.getServerManager().areDeadServersInProgress()) {
 140         Thread.sleep(5);
 141       }
 142       // Kill origin server
 143       LOG.info("Killing origin server " + targetServer.getServerName());
 144       originServer.kill();
 145       cluster.getRegionServerThreads().get(originServerNum).join();
 146
 147       // Put data: r4->v4
 148       LOG.info("Loading r4 to v4 into " + tableName);
 149       putDataAndVerify(table, "r4", FAMILY, "v4", 4);
 150
 151     } finally {
 152       if (hbaseAdmin != null) hbaseAdmin.close();
 153       TEST_UTIL.shutdownMiniCluster();
 154     }
 155   }
 156
 157   private void putDataAndVerify(Table table, String row, byte[] family,
 158       String value, int verifyNum) throws IOException {
 159     System.out.println("=========Putting data :" + row);
 160     Put put = new Put(Bytes.toBytes(row));
 161     put.addColumn(family, Bytes.toBytes("q1"), Bytes.toBytes(value));
 162     table.put(put);
 163     ResultScanner resultScanner = table.getScanner(new Scan());
 164     List<Result> results = new ArrayList<>();
 165     while (true) {
 166       Result r = resultScanner.next();
 167       if (r == null)
 168         break;
 169       results.add(r);
 170     }
 171     resultScanner.close();
 172     if (results.size() != verifyNum) {
 173       System.out.println(results);
 174     }
 175     assertEquals(verifyNum, results.size());
 176   }
 177
 178 }