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.Assert.assertEquals;
021import static org.junit.Assert.assertNotEquals;
022
023import java.util.HashMap;
024import java.util.Iterator;
025import java.util.Map;
026import org.apache.hadoop.conf.Configuration;
027import org.apache.hadoop.fs.FileSystem;
028import org.apache.hadoop.fs.Path;
029import org.apache.hadoop.hbase.HBaseClassTestRule;
030import org.apache.hadoop.hbase.HBaseTestingUtility;
031import org.apache.hadoop.hbase.HConstants;
032import org.apache.hadoop.hbase.regionserver.wal.FSHLog;
033import org.apache.hadoop.hbase.testclassification.MediumTests;
034import org.apache.hadoop.hbase.testclassification.RegionServerTests;
035import org.junit.After;
036import org.junit.Before;
037import org.junit.ClassRule;
038import org.junit.Test;
039import org.junit.experimental.categories.Category;
040import org.mockito.Mockito;
041
042@Category({ RegionServerTests.class, MediumTests.class })
043public class TestLogRoller {
044
045  @ClassRule
046  public static final HBaseClassTestRule CLASS_RULE =
047    HBaseClassTestRule.forClass(TestLogRoller.class);
048
049  private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
050
051  private static final int LOG_ROLL_PERIOD = 20 * 1000;
052  private static final String LOG_DIR = "WALs";
053  private static final String ARCHIVE_DIR = "archiveWALs";
054  private static final String WAL_PREFIX = "test-log-roller";
055  private static Configuration CONF;
056  private static LogRoller ROLLER;
057  private static Path ROOT_DIR;
058  private static FileSystem FS;
059
060  @Before
061  public void setup() throws Exception {
062    CONF = TEST_UTIL.getConfiguration();
063    CONF.setInt("hbase.regionserver.logroll.period", LOG_ROLL_PERIOD);
064    CONF.setInt(HConstants.THREAD_WAKE_FREQUENCY, 300);
065    ROOT_DIR = TEST_UTIL.getRandomDir();
066    FS = FileSystem.get(CONF);
067    RegionServerServices services = Mockito.mock(RegionServerServices.class);
068    Mockito.when(services.getConfiguration()).thenReturn(CONF);
069    ROLLER = new LogRoller(services);
070    ROLLER.start();
071  }
072
073  @After
074  public void tearDown() throws Exception {
075    ROLLER.close();
076    FS.close();
077    TEST_UTIL.shutdownMiniCluster();
078  }
079
080  /**
081   * verify that each wal roll separately
082   */
083  @Test
084  public void testRequestRollWithMultiWal() throws Exception {
085    // add multiple wal
086    Map<FSHLog, Path> wals = new HashMap<>();
087    for (int i = 1; i <= 3; i++) {
088      FSHLog wal =
089        new FSHLog(FS, ROOT_DIR, LOG_DIR, ARCHIVE_DIR, CONF, null, true, WAL_PREFIX, "." + i);
090      wal.init();
091      wals.put(wal, wal.getCurrentFileName());
092      ROLLER.addWAL(wal);
093      Thread.sleep(1000);
094    }
095
096    // request roll
097    Iterator<Map.Entry<FSHLog, Path>> it = wals.entrySet().iterator();
098    Map.Entry<FSHLog, Path> walEntry = it.next();
099    walEntry.getKey().requestLogRoll();
100    Thread.sleep(5000);
101
102    assertNotEquals(walEntry.getValue(), walEntry.getKey().getCurrentFileName());
103    walEntry.setValue(walEntry.getKey().getCurrentFileName());
104    while (it.hasNext()) {
105      walEntry = it.next();
106      assertEquals(walEntry.getValue(), walEntry.getKey().getCurrentFileName());
107    }
108
109    // period roll
110    Thread.sleep(LOG_ROLL_PERIOD + 5000);
111    for (Map.Entry<FSHLog, Path> entry : wals.entrySet()) {
112      assertNotEquals(entry.getValue(), entry.getKey().getCurrentFileName());
113      entry.getKey().close();
114    }
115  }
116}