hbase-server/src/test/java/org/apache/hadoop/hbase/wal/TestSyncReplicationWALProvider.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.wal;
  19
  20 import static org.hamcrest.CoreMatchers.instanceOf;
  21 import static org.hamcrest.CoreMatchers.not;
  22 import static org.junit.Assert.assertEquals;
  23 import static org.junit.Assert.assertThat;
  24
  25 import java.io.IOException;
  26 import java.util.Optional;
  27 import java.util.function.BiPredicate;
  28 import org.apache.hadoop.fs.Path;
  29 import org.apache.hadoop.hbase.HBaseClassTestRule;
  30 import org.apache.hadoop.hbase.HBaseTestingUtility;
  31 import org.apache.hadoop.hbase.TableName;
  32 import org.apache.hadoop.hbase.Waiter.ExplainingPredicate;
  33 import org.apache.hadoop.hbase.client.RegionInfo;
  34 import org.apache.hadoop.hbase.client.RegionInfoBuilder;
  35 import org.apache.hadoop.hbase.regionserver.MultiVersionConcurrencyControl;
  36 import org.apache.hadoop.hbase.regionserver.wal.DualAsyncFSWAL;
  37 import org.apache.hadoop.hbase.regionserver.wal.ProtobufLogReader;
  38 import org.apache.hadoop.hbase.regionserver.wal.ProtobufLogTestHelper;
  39 import org.apache.hadoop.hbase.replication.SyncReplicationState;
  40 import org.apache.hadoop.hbase.replication.regionserver.SyncReplicationPeerInfoProvider;
  41 import org.apache.hadoop.hbase.testclassification.MediumTests;
  42 import org.apache.hadoop.hbase.testclassification.RegionServerTests;
  43 import org.apache.hadoop.hbase.util.Bytes;
  44 import org.apache.hadoop.hbase.util.Pair;
  45 import org.apache.hadoop.hdfs.DistributedFileSystem;
  46 import org.junit.AfterClass;
  47 import org.junit.BeforeClass;
  48 import org.junit.ClassRule;
  49 import org.junit.Test;
  50 import org.junit.experimental.categories.Category;
  51
  52 @Category({ RegionServerTests.class, MediumTests.class })
  53 public class TestSyncReplicationWALProvider {
  54
  55   @ClassRule
  56   public static final HBaseClassTestRule CLASS_RULE =
  57     HBaseClassTestRule.forClass(TestSyncReplicationWALProvider.class);
  58
  59   private static final HBaseTestingUtility UTIL = new HBaseTestingUtility();
  60
  61   private static String PEER_ID = "1";
  62
  63   private static String REMOTE_WAL_DIR = "/RemoteWAL";
  64
  65   private static TableName TABLE = TableName.valueOf("table");
  66
  67   private static TableName TABLE_NO_REP = TableName.valueOf("table-no-rep");
  68
  69   private static RegionInfo REGION = RegionInfoBuilder.newBuilder(TABLE).build();
  70
  71   private static RegionInfo REGION_NO_REP = RegionInfoBuilder.newBuilder(TABLE_NO_REP).build();
  72
  73   private static WALFactory FACTORY;
  74
  75   public static final class InfoProvider implements SyncReplicationPeerInfoProvider {
  76
  77     @Override
  78     public Optional<Pair<String, String>> getPeerIdAndRemoteWALDir(TableName table) {
  79       if (table != null && table.equals(TABLE)) {
  80         return Optional.of(Pair.newPair(PEER_ID, REMOTE_WAL_DIR));
  81       } else {
  82         return Optional.empty();
  83       }
  84     }
  85
  86     @Override
  87     public boolean checkState(TableName table,
  88         BiPredicate<SyncReplicationState, SyncReplicationState> checker) {
  89       return false;
  90     }
  91   }
  92
  93   @BeforeClass
  94   public static void setUpBeforeClass() throws Exception {
  95     UTIL.startMiniDFSCluster(3);
  96     FACTORY = new WALFactory(UTIL.getConfiguration(), "test");
  97     ((SyncReplicationWALProvider) FACTORY.getWALProvider()).setPeerInfoProvider(new InfoProvider());
  98     UTIL.getTestFileSystem().mkdirs(new Path(REMOTE_WAL_DIR, PEER_ID));
  99   }
 100
 101   @AfterClass
 102   public static void tearDownAfterClass() throws IOException {
 103     FACTORY.close();
 104     UTIL.shutdownMiniDFSCluster();
 105   }
 106
 107   private void testReadWrite(DualAsyncFSWAL wal) throws Exception {
 108     int recordCount = 100;
 109     int columnCount = 10;
 110     byte[] row = Bytes.toBytes("testRow");
 111     long timestamp = System.currentTimeMillis();
 112     MultiVersionConcurrencyControl mvcc = new MultiVersionConcurrencyControl();
 113     ProtobufLogTestHelper.doWrite(wal, REGION, TABLE, columnCount, recordCount, row, timestamp,
 114       mvcc);
 115     Path localFile = wal.getCurrentFileName();
 116     Path remoteFile = new Path(REMOTE_WAL_DIR + "/" + PEER_ID, localFile.getName());
 117     try (ProtobufLogReader reader =
 118       (ProtobufLogReader) FACTORY.createReader(UTIL.getTestFileSystem(), localFile)) {
 119       ProtobufLogTestHelper.doRead(reader, false, REGION, TABLE, columnCount, recordCount, row,
 120         timestamp);
 121     }
 122     try (ProtobufLogReader reader =
 123       (ProtobufLogReader) FACTORY.createReader(UTIL.getTestFileSystem(), remoteFile)) {
 124       ProtobufLogTestHelper.doRead(reader, false, REGION, TABLE, columnCount, recordCount, row,
 125         timestamp);
 126     }
 127     wal.rollWriter();
 128     DistributedFileSystem dfs = (DistributedFileSystem) UTIL.getDFSCluster().getFileSystem();
 129     UTIL.waitFor(5000, new ExplainingPredicate<Exception>() {
 130
 131       @Override
 132       public boolean evaluate() throws Exception {
 133         return dfs.isFileClosed(localFile) && dfs.isFileClosed(remoteFile);
 134       }
 135
 136       @Override
 137       public String explainFailure() throws Exception {
 138         StringBuilder sb = new StringBuilder();
 139         if (!dfs.isFileClosed(localFile)) {
 140           sb.append(localFile + " has not been closed yet.");
 141         }
 142         if (!dfs.isFileClosed(remoteFile)) {
 143           sb.append(remoteFile + " has not been closed yet.");
 144         }
 145         return sb.toString();
 146       }
 147     });
 148     try (ProtobufLogReader reader =
 149       (ProtobufLogReader) FACTORY.createReader(UTIL.getTestFileSystem(), localFile)) {
 150       ProtobufLogTestHelper.doRead(reader, true, REGION, TABLE, columnCount, recordCount, row,
 151         timestamp);
 152     }
 153     try (ProtobufLogReader reader =
 154       (ProtobufLogReader) FACTORY.createReader(UTIL.getTestFileSystem(), remoteFile)) {
 155       ProtobufLogTestHelper.doRead(reader, true, REGION, TABLE, columnCount, recordCount, row,
 156         timestamp);
 157     }
 158   }
 159
 160   @Test
 161   public void test() throws Exception {
 162     WAL walNoRep = FACTORY.getWAL(REGION_NO_REP);
 163     assertThat(walNoRep, not(instanceOf(DualAsyncFSWAL.class)));
 164     DualAsyncFSWAL wal = (DualAsyncFSWAL) FACTORY.getWAL(REGION);
 165     assertEquals(2, FACTORY.getWALs().size());
 166     testReadWrite(wal);
 167     SyncReplicationWALProvider walProvider = (SyncReplicationWALProvider) FACTORY.getWALProvider();
 168     walProvider.peerSyncReplicationStateChange(PEER_ID, SyncReplicationState.ACTIVE,
 169       SyncReplicationState.DOWNGRADE_ACTIVE, 1);
 170     assertEquals(1, FACTORY.getWALs().size());
 171   }
 172 }