001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.regionserver;
019
020import static org.junit.jupiter.api.Assertions.assertEquals;
021import static org.junit.jupiter.api.Assertions.assertFalse;
022import static org.junit.jupiter.api.Assertions.assertTrue;
023
024import java.io.IOException;
025import java.util.ArrayList;
026import java.util.List;
027import org.apache.hadoop.hbase.HBaseTestingUtil;
028import org.apache.hadoop.hbase.SingleProcessHBaseCluster;
029import org.apache.hadoop.hbase.TableName;
030import org.apache.hadoop.hbase.client.Admin;
031import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;
032import org.apache.hadoop.hbase.client.Put;
033import org.apache.hadoop.hbase.client.RegionInfo;
034import org.apache.hadoop.hbase.client.RegionLocator;
035import org.apache.hadoop.hbase.client.Result;
036import org.apache.hadoop.hbase.client.ResultScanner;
037import org.apache.hadoop.hbase.client.Scan;
038import org.apache.hadoop.hbase.client.Table;
039import org.apache.hadoop.hbase.client.TableDescriptor;
040import org.apache.hadoop.hbase.client.TableDescriptorBuilder;
041import org.apache.hadoop.hbase.master.HMaster;
042import org.apache.hadoop.hbase.testclassification.MediumTests;
043import org.apache.hadoop.hbase.testclassification.RegionServerTests;
044import org.apache.hadoop.hbase.util.Bytes;
045import org.junit.jupiter.api.BeforeEach;
046import org.junit.jupiter.api.Tag;
047import org.junit.jupiter.api.Test;
048import org.junit.jupiter.api.TestInfo;
049import org.slf4j.Logger;
050import org.slf4j.LoggerFactory;
051
052/**
053 * Tests that need to spin up a cluster testing an {@link HRegion}. Use {@link TestHRegion} if you
054 * don't need a cluster, if you can test w/ a standalone {@link HRegion}.
055 */
056@Tag(RegionServerTests.TAG)
057@Tag(MediumTests.TAG)
058public class TestHRegionOnCluster {
059
060  private static final Logger LOG = LoggerFactory.getLogger(TestHRegionOnCluster.class);
061  private static final HBaseTestingUtil TEST_UTIL = new HBaseTestingUtil();
062  private String name;
063
064  @BeforeEach
065  public void setTestName(TestInfo testInfo) {
066    this.name = testInfo.getTestMethod().get().getName();
067  }
068
069  @Test
070  public void testDataCorrectnessReplayingRecoveredEdits() throws Exception {
071    final int NUM_RS = 3;
072    Admin hbaseAdmin = null;
073    TEST_UTIL.startMiniCluster(NUM_RS);
074
075    try {
076      final TableName tableName = TableName.valueOf(name);
077      final byte[] FAMILY = Bytes.toBytes("family");
078      SingleProcessHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
079      HMaster master = cluster.getMaster();
080
081      // Create table
082      TableDescriptor tableDescriptor = TableDescriptorBuilder.newBuilder(tableName)
083        .setColumnFamily(ColumnFamilyDescriptorBuilder.of(FAMILY)).build();
084      hbaseAdmin = master.getConnection().getAdmin();
085      hbaseAdmin.createTable(tableDescriptor);
086
087      assertTrue(hbaseAdmin.isTableAvailable(tableName));
088
089      // Put data: r1->v1
090      LOG.info("Loading r1 to v1 into " + tableName);
091      Table table = TEST_UTIL.getConnection().getTable(tableName);
092      putDataAndVerify(table, "r1", FAMILY, "v1", 1);
093
094      TEST_UTIL.waitUntilAllRegionsAssigned(table.getName());
095      // Move region to target server
096
097      RegionInfo regionInfo;
098      try (RegionLocator locator = TEST_UTIL.getConnection().getRegionLocator(tableName)) {
099        regionInfo = locator.getRegionLocation(Bytes.toBytes("r1")).getRegion();
100      }
101
102      int originServerNum = cluster.getServerWith(regionInfo.getRegionName());
103      HRegionServer originServer = cluster.getRegionServer(originServerNum);
104      int targetServerNum = (originServerNum + 1) % NUM_RS;
105      HRegionServer targetServer = cluster.getRegionServer(targetServerNum);
106      assertFalse(originServer.equals(targetServer));
107
108      TEST_UTIL.waitUntilAllRegionsAssigned(table.getName());
109      LOG.info("Moving " + regionInfo.getEncodedName() + " to " + targetServer.getServerName());
110      hbaseAdmin.move(regionInfo.getEncodedNameAsBytes(), targetServer.getServerName());
111      do {
112        Thread.sleep(1);
113      } while (cluster.getServerWith(regionInfo.getRegionName()) == originServerNum);
114
115      // Put data: r2->v2
116      LOG.info("Loading r2 to v2 into " + tableName);
117      putDataAndVerify(table, "r2", FAMILY, "v2", 2);
118
119      TEST_UTIL.waitUntilAllRegionsAssigned(table.getName());
120      // Move region to origin server
121      LOG.info("Moving " + regionInfo.getEncodedName() + " to " + originServer.getServerName());
122      hbaseAdmin.move(regionInfo.getEncodedNameAsBytes(), originServer.getServerName());
123      do {
124        Thread.sleep(1);
125      } while (cluster.getServerWith(regionInfo.getRegionName()) == targetServerNum);
126
127      // Put data: r3->v3
128      LOG.info("Loading r3 to v3 into " + tableName);
129      putDataAndVerify(table, "r3", FAMILY, "v3", 3);
130
131      // Kill target server
132      LOG.info("Killing target server " + targetServer.getServerName());
133      targetServer.kill();
134      cluster.getRegionServerThreads().get(targetServerNum).join();
135      // Wait until finish processing of shutdown
136      while (master.getServerManager().areDeadServersInProgress()) {
137        Thread.sleep(5);
138      }
139      // Kill origin server
140      LOG.info("Killing origin server " + targetServer.getServerName());
141      originServer.kill();
142      cluster.getRegionServerThreads().get(originServerNum).join();
143
144      // Put data: r4->v4
145      LOG.info("Loading r4 to v4 into " + tableName);
146      putDataAndVerify(table, "r4", FAMILY, "v4", 4);
147
148    } finally {
149      if (hbaseAdmin != null) hbaseAdmin.close();
150      TEST_UTIL.shutdownMiniCluster();
151    }
152  }
153
154  private void putDataAndVerify(Table table, String row, byte[] family, String value, int verifyNum)
155    throws IOException {
156    System.out.println("=========Putting data :" + row);
157    Put put = new Put(Bytes.toBytes(row));
158    put.addColumn(family, Bytes.toBytes("q1"), Bytes.toBytes(value));
159    table.put(put);
160    ResultScanner resultScanner = table.getScanner(new Scan());
161    List<Result> results = new ArrayList<>();
162    while (true) {
163      Result r = resultScanner.next();
164      if (r == null) break;
165      results.add(r);
166    }
167    resultScanner.close();
168    if (results.size() != verifyNum) {
169      System.out.println(results);
170    }
171    assertEquals(verifyNum, results.size());
172  }
173
174}