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 */
018
019package org.apache.hadoop.hbase.regionserver;
020
021import static org.junit.Assert.assertEquals;
022import static org.junit.Assert.assertNotEquals;
023
024import org.apache.hadoop.conf.Configuration;
025import org.apache.hadoop.fs.FileSystem;
026import org.apache.hadoop.fs.Path;
027import org.apache.hadoop.hbase.HBaseClassTestRule;
028import org.apache.hadoop.hbase.HBaseTestingUtility;
029import org.apache.hadoop.hbase.HConstants;
030import org.apache.hadoop.hbase.regionserver.wal.FSHLog;
031import org.apache.hadoop.hbase.testclassification.MediumTests;
032import org.apache.hadoop.hbase.testclassification.RegionServerTests;
033import org.junit.After;
034import org.junit.Before;
035import org.junit.ClassRule;
036import org.junit.Test;
037import org.junit.experimental.categories.Category;
038import org.mockito.Mockito;
039import java.util.HashMap;
040import java.util.Iterator;
041import java.util.Map;
042
043@Category({RegionServerTests.class, MediumTests.class})
044public class TestLogRoller {
045
046  @ClassRule
047  public static final HBaseClassTestRule CLASS_RULE =
048    HBaseClassTestRule.forClass(TestLogRoller.class);
049
050  private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
051
052  private static final int LOG_ROLL_PERIOD = 20 * 1000;
053  private static final String LOG_DIR = "WALs";
054  private static final String ARCHIVE_DIR = "archiveWALs";
055  private static final String WAL_PREFIX = "test-log-roller";
056  private static Configuration CONF;
057  private static LogRoller ROLLER;
058  private static Path ROOT_DIR;
059  private static FileSystem FS;
060
061  @Before
062  public void setup() throws Exception {
063    CONF = TEST_UTIL.getConfiguration();
064    CONF.setInt("hbase.regionserver.logroll.period", LOG_ROLL_PERIOD);
065    CONF.setInt(HConstants.THREAD_WAKE_FREQUENCY, 300);
066    ROOT_DIR = TEST_UTIL.getRandomDir();
067    FS = FileSystem.get(CONF);
068    RegionServerServices services = Mockito.mock(RegionServerServices.class);
069    Mockito.when(services.getConfiguration()).thenReturn(CONF);
070    ROLLER = new LogRoller(services);
071    ROLLER.start();
072  }
073
074  @After
075  public void tearDown() throws Exception {
076    ROLLER.close();
077    FS.close();
078    TEST_UTIL.shutdownMiniCluster();
079  }
080
081  /**
082   * verify that each wal roll separately
083   */
084  @Test
085  public void testRequestRollWithMultiWal() throws Exception {
086    // add multiple wal
087    Map<FSHLog, Path> wals = new HashMap<>();
088    for (int i = 1; i <= 3; i++) {
089      FSHLog wal = new FSHLog(FS, ROOT_DIR, LOG_DIR, ARCHIVE_DIR, CONF, null,
090        true, WAL_PREFIX, "." + i);
091      wal.init();
092      wals.put(wal, wal.getCurrentFileName());
093      ROLLER.addWAL(wal);
094      Thread.sleep(1000);
095    }
096
097    // request roll
098    Iterator<Map.Entry<FSHLog, Path>> it = wals.entrySet().iterator();
099    Map.Entry<FSHLog, Path> walEntry = it.next();
100    walEntry.getKey().requestLogRoll();
101    Thread.sleep(5000);
102
103    assertNotEquals(walEntry.getValue(), walEntry.getKey().getCurrentFileName());
104    walEntry.setValue(walEntry.getKey().getCurrentFileName());
105    while (it.hasNext()) {
106      walEntry = it.next();
107      assertEquals(walEntry.getValue(), walEntry.getKey().getCurrentFileName());
108    }
109
110    // period roll
111    Thread.sleep(LOG_ROLL_PERIOD + 5000);
112    for (Map.Entry<FSHLog, Path> entry : wals.entrySet()) {
113      assertNotEquals(entry.getValue(), entry.getKey().getCurrentFileName());
114      entry.getKey().close();
115    }
116  }
117}