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.wal;
019
020import static org.junit.Assert.assertNull;
021import static org.mockito.Mockito.mock;
022import static org.mockito.Mockito.when;
023
024import java.io.IOException;
025import java.io.UncheckedIOException;
026import java.util.List;
027import java.util.NavigableMap;
028import java.util.TreeMap;
029import java.util.concurrent.CompletableFuture;
030import java.util.concurrent.atomic.AtomicInteger;
031import java.util.concurrent.atomic.AtomicReference;
032import org.apache.hadoop.conf.Configuration;
033import org.apache.hadoop.fs.FileSystem;
034import org.apache.hadoop.fs.Path;
035import org.apache.hadoop.hbase.HBaseClassTestRule;
036import org.apache.hadoop.hbase.HConstants;
037import org.apache.hadoop.hbase.KeyValue;
038import org.apache.hadoop.hbase.Server;
039import org.apache.hadoop.hbase.TableName;
040import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;
041import org.apache.hadoop.hbase.client.RegionInfo;
042import org.apache.hadoop.hbase.client.RegionInfoBuilder;
043import org.apache.hadoop.hbase.client.TableDescriptor;
044import org.apache.hadoop.hbase.client.TableDescriptorBuilder;
045import org.apache.hadoop.hbase.regionserver.LogRoller;
046import org.apache.hadoop.hbase.regionserver.MultiVersionConcurrencyControl;
047import org.apache.hadoop.hbase.regionserver.RegionServerServices;
048import org.apache.hadoop.hbase.regionserver.SequenceId;
049import org.apache.hadoop.hbase.testclassification.LargeTests;
050import org.apache.hadoop.hbase.testclassification.RegionServerTests;
051import org.apache.hadoop.hbase.util.Bytes;
052import org.apache.hadoop.hbase.util.CommonFSUtils;
053import org.apache.hadoop.hbase.util.FutureUtils;
054import org.apache.hadoop.hbase.util.Threads;
055import org.apache.hadoop.hbase.wal.WALEdit;
056import org.apache.hadoop.hbase.wal.WALKey;
057import org.apache.hadoop.hbase.wal.WALKeyImpl;
058import org.apache.hadoop.hbase.wal.WALProvider.AsyncWriter;
059import org.junit.AfterClass;
060import org.junit.BeforeClass;
061import org.junit.ClassRule;
062import org.junit.Test;
063import org.junit.experimental.categories.Category;
064
065import org.apache.hbase.thirdparty.io.netty.channel.Channel;
066import org.apache.hbase.thirdparty.io.netty.channel.EventLoopGroup;
067import org.apache.hbase.thirdparty.io.netty.channel.nio.NioEventLoopGroup;
068import org.apache.hbase.thirdparty.io.netty.channel.socket.nio.NioSocketChannel;
069
070/**
071 * Provides AsyncFSWAL test cases.
072 */
073@Category({ RegionServerTests.class, LargeTests.class })
074public class TestAsyncFSWAL extends AbstractTestFSWAL {
075
076  @ClassRule
077  public static final HBaseClassTestRule CLASS_RULE =
078      HBaseClassTestRule.forClass(TestAsyncFSWAL.class);
079
080  private static EventLoopGroup GROUP;
081
082  private static Class<? extends Channel> CHANNEL_CLASS;
083
084  @BeforeClass
085  public static void setUpBeforeClass() throws Exception {
086    GROUP = new NioEventLoopGroup(1, Threads.newDaemonThreadFactory("TestAsyncFSWAL"));
087    CHANNEL_CLASS = NioSocketChannel.class;
088    AbstractTestFSWAL.setUpBeforeClass();
089  }
090
091  @AfterClass
092  public static void tearDownAfterClass() throws Exception {
093    AbstractTestFSWAL.tearDownAfterClass();
094    GROUP.shutdownGracefully();
095  }
096
097  @Override
098  protected AbstractFSWAL<?> newWAL(FileSystem fs, Path rootDir, String logDir, String archiveDir,
099      Configuration conf, List<WALActionsListener> listeners, boolean failIfWALExists,
100      String prefix, String suffix) throws IOException {
101    return new AsyncFSWAL(fs, rootDir, logDir, archiveDir, conf, listeners, failIfWALExists, prefix,
102        suffix, GROUP, CHANNEL_CLASS);
103  }
104
105  @Override
106  protected AbstractFSWAL<?> newSlowWAL(FileSystem fs, Path rootDir, String logDir,
107      String archiveDir, Configuration conf, List<WALActionsListener> listeners,
108      boolean failIfWALExists, String prefix, String suffix, final Runnable action)
109      throws IOException {
110    return new AsyncFSWAL(fs, rootDir, logDir, archiveDir, conf, listeners, failIfWALExists, prefix,
111        suffix, GROUP, CHANNEL_CLASS) {
112
113      @Override
114      protected void atHeadOfRingBufferEventHandlerAppend() {
115        action.run();
116        super.atHeadOfRingBufferEventHandlerAppend();
117      }
118
119    };
120  }
121
122  @Test
123  public void testBrokenWriter() throws Exception {
124    Server server = mock(Server.class);
125    when(server.getConfiguration()).thenReturn(CONF);
126    RegionServerServices services = mock(RegionServerServices.class);
127    TableDescriptor td = TableDescriptorBuilder.newBuilder(TableName.valueOf("table"))
128        .setColumnFamily(ColumnFamilyDescriptorBuilder.of("row")).build();
129    RegionInfo ri = RegionInfoBuilder.newBuilder(td.getTableName()).build();
130    MultiVersionConcurrencyControl mvcc = new MultiVersionConcurrencyControl();
131    NavigableMap<byte[], Integer> scopes = new TreeMap<>(Bytes.BYTES_COMPARATOR);
132    for (byte[] fam : td.getColumnFamilyNames()) {
133      scopes.put(fam, 0);
134    }
135    long timestamp = System.currentTimeMillis();
136    String testName = currentTest.getMethodName();
137    AtomicInteger failedCount = new AtomicInteger(0);
138    try (LogRoller roller = new LogRoller(server, services);
139        AsyncFSWAL wal = new AsyncFSWAL(FS, CommonFSUtils.getWALRootDir(CONF), DIR.toString(),
140            testName, CONF, null, true, null, null, GROUP, CHANNEL_CLASS) {
141
142          @Override
143          protected AsyncWriter createWriterInstance(Path path) throws IOException {
144            AsyncWriter writer = super.createWriterInstance(path);
145            return new AsyncWriter() {
146
147              @Override
148              public void close() throws IOException {
149                writer.close();
150              }
151
152              @Override
153              public long getLength() {
154                return writer.getLength();
155              }
156
157              @Override
158              public CompletableFuture<Long> sync() {
159                CompletableFuture<Long> result = writer.sync();
160                if (failedCount.incrementAndGet() < 1000) {
161                  CompletableFuture<Long> future = new CompletableFuture<>();
162                  FutureUtils.addListener(result,
163                    (r, e) -> future.completeExceptionally(new IOException("Inject Error")));
164                  return future;
165                } else {
166                  return result;
167                }
168              }
169
170              @Override
171              public void append(Entry entry) {
172                writer.append(entry);
173              }
174            };
175          }
176        }) {
177      roller.addWAL(wal);
178      roller.start();
179      int numThreads = 10;
180      AtomicReference<Exception> error = new AtomicReference<>();
181      Thread[] threads = new Thread[numThreads];
182      for (int i = 0; i < 10; i++) {
183        final int index = i;
184        threads[index] = new Thread("Write-Thread-" + index) {
185
186          @Override
187          public void run() {
188            byte[] row = Bytes.toBytes("row" + index);
189            WALEdit cols = new WALEdit();
190            cols.add(new KeyValue(row, row, row, timestamp + index, row));
191            WALKeyImpl key = new WALKeyImpl(ri.getEncodedNameAsBytes(), td.getTableName(),
192                SequenceId.NO_SEQUENCE_ID, timestamp, WALKey.EMPTY_UUIDS, HConstants.NO_NONCE,
193                HConstants.NO_NONCE, mvcc, scopes);
194            try {
195              wal.append(ri, key, cols, true);
196            } catch (IOException e) {
197              // should not happen
198              throw new UncheckedIOException(e);
199            }
200            try {
201              wal.sync();
202            } catch (IOException e) {
203              error.set(e);
204            }
205          }
206        };
207      }
208      for (Thread t : threads) {
209        t.start();
210      }
211      for (Thread t : threads) {
212        t.join();
213      }
214      assertNull(error.get());
215    }
216  }
217}