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.assertEquals;
021
022import java.io.IOException;
023import java.util.concurrent.CompletableFuture;
024import java.util.concurrent.TimeUnit;
025import org.apache.hadoop.conf.Configuration;
026import org.apache.hadoop.hbase.HBaseClassTestRule;
027import org.apache.hadoop.hbase.HConstants;
028import org.apache.hadoop.hbase.TableName;
029import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;
030import org.apache.hadoop.hbase.client.RegionInfo;
031import org.apache.hadoop.hbase.client.Table;
032import org.apache.hadoop.hbase.client.TableDescriptor;
033import org.apache.hadoop.hbase.client.TableDescriptorBuilder;
034import org.apache.hadoop.hbase.io.asyncfs.FanOutOneBlockAsyncDFSOutputHelper;
035import org.apache.hadoop.hbase.testclassification.LargeTests;
036import org.apache.hadoop.hbase.testclassification.VerySlowRegionServerTests;
037import org.apache.hadoop.hbase.wal.AsyncFSWALProvider;
038import org.apache.hadoop.hbase.wal.WALFactory;
039import org.apache.hadoop.hdfs.MiniDFSCluster.DataNodeProperties;
040import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
041import org.junit.BeforeClass;
042import org.junit.ClassRule;
043import org.junit.Test;
044import org.junit.experimental.categories.Category;
045
046import org.apache.hbase.thirdparty.io.netty.channel.Channel;
047import org.apache.hbase.thirdparty.io.netty.channel.EventLoopGroup;
048
049@Category({ VerySlowRegionServerTests.class, LargeTests.class })
050public class TestAsyncLogRolling extends AbstractTestLogRolling {
051
052  @ClassRule
053  public static final HBaseClassTestRule CLASS_RULE =
054    HBaseClassTestRule.forClass(TestAsyncLogRolling.class);
055
056  @BeforeClass
057  public static void setUpBeforeClass() throws Exception {
058    Configuration conf = TestAsyncLogRolling.TEST_UTIL.getConfiguration();
059    conf.setInt(FanOutOneBlockAsyncDFSOutputHelper.ASYNC_DFS_OUTPUT_CREATE_MAX_RETRIES, 100);
060    conf.set(WALFactory.WAL_PROVIDER, "asyncfs");
061    AbstractTestLogRolling.setUpBeforeClass();
062  }
063
064  public static class SlowSyncLogWriter extends AsyncProtobufLogWriter {
065
066    public SlowSyncLogWriter(EventLoopGroup eventLoopGroup, Class<? extends Channel> channelClass) {
067      super(eventLoopGroup, channelClass);
068    }
069
070    @Override
071    public CompletableFuture<Long> sync(boolean forceSync) {
072      CompletableFuture<Long> future = new CompletableFuture<>();
073      super.sync(forceSync).whenCompleteAsync((lengthAfterFlush, error) -> {
074        EXECUTOR.schedule(() -> {
075          if (error != null) {
076            future.completeExceptionally(error);
077          } else {
078            future.complete(lengthAfterFlush);
079          }
080        }, syncLatencyMillis, TimeUnit.MILLISECONDS);
081      });
082      return future;
083    }
084  }
085
086  @Override
087  protected void setSlowLogWriter(Configuration conf) {
088    conf.set(AsyncFSWALProvider.WRITER_IMPL, SlowSyncLogWriter.class.getName());
089  }
090
091  @Override
092  protected void setDefaultLogWriter(Configuration conf) {
093    conf.set(AsyncFSWALProvider.WRITER_IMPL, AsyncProtobufLogWriter.class.getName());
094  }
095
096  @Test
097  public void testSlowSyncLogRolling() throws Exception {
098    // Create the test table
099    TableDescriptor desc = TableDescriptorBuilder.newBuilder(TableName.valueOf(getName()))
100      .setColumnFamily(ColumnFamilyDescriptorBuilder.of(HConstants.CATALOG_FAMILY)).build();
101    admin.createTable(desc);
102    try (Table table = TEST_UTIL.getConnection().getTable(desc.getTableName())) {
103      server = TEST_UTIL.getRSForFirstRegionInTable(desc.getTableName());
104      RegionInfo region = server.getRegions(desc.getTableName()).get(0).getRegionInfo();
105      final AbstractFSWAL<?> log = getWALAndRegisterSlowSyncHook(region);
106
107      // Set default log writer, no additional latency to any sync on the hlog.
108      checkSlowSync(log, table, -1, 10, false);
109
110      // Adds 5000 ms of latency to any sync on the hlog. This will trip the other threshold.
111      // Write some data. Should only take one sync.
112      checkSlowSync(log, table, 5000, 1, true);
113
114      // Set default log writer, no additional latency to any sync on the hlog.
115      checkSlowSync(log, table, -1, 10, false);
116    }
117  }
118
119  @Test
120  public void testLogRollOnDatanodeDeath() throws IOException, InterruptedException {
121    dfsCluster.startDataNodes(TEST_UTIL.getConfiguration(), 3, true, null, null);
122    tableName = getName();
123    Table table = createTestTable(tableName);
124    TEST_UTIL.waitUntilAllRegionsAssigned(table.getName());
125    doPut(table, 1);
126    server = TEST_UTIL.getRSForFirstRegionInTable(table.getName());
127    RegionInfo hri = server.getRegions(table.getName()).get(0).getRegionInfo();
128    AsyncFSWAL wal = (AsyncFSWAL) server.getWAL(hri);
129    int numRolledLogFiles = AsyncFSWALProvider.getNumRolledLogFiles(wal);
130    DatanodeInfo[] dnInfos = wal.getPipeline();
131    DataNodeProperties dnProp = TEST_UTIL.getDFSCluster().stopDataNode(dnInfos[0].getName());
132    TEST_UTIL.getDFSCluster().restartDataNode(dnProp);
133    doPut(table, 2);
134    assertEquals(numRolledLogFiles + 1, AsyncFSWALProvider.getNumRolledLogFiles(wal));
135  }
136}