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.master.snapshot;
019
020import static org.junit.Assert.assertFalse;
021import static org.junit.Assert.assertTrue;
022
023import java.io.IOException;
024import java.util.Collection;
025import java.util.HashSet;
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.TableName;
033import org.apache.hadoop.hbase.client.RegionInfo;
034import org.apache.hadoop.hbase.client.RegionInfoBuilder;
035import org.apache.hadoop.hbase.snapshot.SnapshotDescriptionUtils;
036import org.apache.hadoop.hbase.snapshot.SnapshotReferenceUtil;
037import org.apache.hadoop.hbase.snapshot.SnapshotTestingUtils;
038import org.apache.hadoop.hbase.testclassification.MasterTests;
039import org.apache.hadoop.hbase.testclassification.SmallTests;
040import org.apache.hadoop.hbase.util.CommonFSUtils;
041import org.junit.AfterClass;
042import org.junit.BeforeClass;
043import org.junit.ClassRule;
044import org.junit.Rule;
045import org.junit.Test;
046import org.junit.experimental.categories.Category;
047import org.junit.rules.TestName;
048
049/**
050 * Test that the snapshot hfile cleaner finds hfiles referenced in a snapshot
051 */
052@Category({MasterTests.class, SmallTests.class})
053public class TestSnapshotHFileCleaner {
054
055  @ClassRule
056  public static final HBaseClassTestRule CLASS_RULE =
057      HBaseClassTestRule.forClass(TestSnapshotHFileCleaner.class);
058
059  private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
060  private static final String TABLE_NAME_STR = "testSnapshotManifest";
061  private static final String SNAPSHOT_NAME_STR = "testSnapshotManifest-snapshot";
062  private static Path rootDir;
063  private static FileSystem fs;
064  private static Configuration conf;
065
066  @Rule
067  public TestName name = new TestName();
068
069  /**
070   * Setup the test environment
071   */
072  @BeforeClass
073  public static void setup() throws Exception {
074    conf = TEST_UTIL.getConfiguration();
075    rootDir = CommonFSUtils.getRootDir(conf);
076    fs = FileSystem.get(conf);
077  }
078
079
080  @AfterClass
081  public static void cleanup() throws IOException {
082    // cleanup
083    fs.delete(rootDir, true);
084  }
085
086  @Test
087  public void testFindsSnapshotFilesWhenCleaning() throws IOException {
088    CommonFSUtils.setRootDir(conf, TEST_UTIL.getDataTestDir());
089    Path rootDir = CommonFSUtils.getRootDir(conf);
090    Path archivedHfileDir = new Path(TEST_UTIL.getDataTestDir(), HConstants.HFILE_ARCHIVE_DIRECTORY);
091
092    FileSystem fs = FileSystem.get(conf);
093    SnapshotHFileCleaner cleaner = new SnapshotHFileCleaner();
094    cleaner.setConf(conf);
095
096    // write an hfile to the snapshot directory
097    String snapshotName = "snapshot";
098    final TableName tableName = TableName.valueOf(name.getMethodName());
099    Path snapshotDir = SnapshotDescriptionUtils.getCompletedSnapshotDir(snapshotName, rootDir);
100    RegionInfo mockRegion = RegionInfoBuilder.newBuilder(tableName).build();
101    Path regionSnapshotDir = new Path(snapshotDir, mockRegion.getEncodedName());
102    Path familyDir = new Path(regionSnapshotDir, "family");
103    // create a reference to a supposedly valid hfile
104    String hfile = "fd1e73e8a96c486090c5cec07b4894c4";
105    Path refFile = new Path(familyDir, hfile);
106
107    // make sure the reference file exists
108    fs.create(refFile);
109
110    // create the hfile in the archive
111    fs.mkdirs(archivedHfileDir);
112    fs.createNewFile(new Path(archivedHfileDir, hfile));
113
114    // make sure that the file isn't deletable
115    assertFalse(cleaner.isFileDeletable(fs.getFileStatus(refFile)));
116  }
117
118  static class SnapshotFiles implements SnapshotFileCache.SnapshotFileInspector {
119    @Override
120    public Collection<String> filesUnderSnapshot(final FileSystem workingFs,
121      final Path snapshotDir) throws IOException {
122      Collection<String> files =  new HashSet<>();
123      files.addAll(SnapshotReferenceUtil.getHFileNames(conf, workingFs, snapshotDir));
124      return files;
125    }
126  }
127
128  /**
129   * If there is a corrupted region manifest, it should throw out CorruptedSnapshotException,
130   * instead of an IOException
131   */
132  @Test
133  public void testCorruptedRegionManifest() throws IOException {
134    SnapshotTestingUtils.SnapshotMock
135        snapshotMock = new SnapshotTestingUtils.SnapshotMock(conf, fs, rootDir);
136    SnapshotTestingUtils.SnapshotMock.SnapshotBuilder builder = snapshotMock.createSnapshotV2(
137        SNAPSHOT_NAME_STR, TABLE_NAME_STR);
138    builder.addRegionV2();
139    builder.corruptOneRegionManifest();
140
141    long period = Long.MAX_VALUE;
142    SnapshotFileCache cache = new SnapshotFileCache(conf, period, 10000000,
143        "test-snapshot-file-cache-refresh", new SnapshotFiles());
144    try {
145      cache.getSnapshotsInProgress();
146    } finally {
147      fs.delete(SnapshotDescriptionUtils.getWorkingSnapshotDir(rootDir, conf), true);
148    }
149  }
150
151  /**
152   * If there is a corrupted data manifest, it should throw out CorruptedSnapshotException,
153   * instead of an IOException
154   */
155  @Test
156  public void testCorruptedDataManifest() throws IOException {
157    SnapshotTestingUtils.SnapshotMock
158        snapshotMock = new SnapshotTestingUtils.SnapshotMock(conf, fs, rootDir);
159    SnapshotTestingUtils.SnapshotMock.SnapshotBuilder builder = snapshotMock.createSnapshotV2(
160        SNAPSHOT_NAME_STR, TABLE_NAME_STR);
161    builder.addRegionV2();
162    // consolidate to generate a data.manifest file
163    builder.consolidate();
164    builder.corruptDataManifest();
165
166    long period = Long.MAX_VALUE;
167    SnapshotFileCache cache = new SnapshotFileCache(conf, period, 10000000,
168        "test-snapshot-file-cache-refresh", new SnapshotFiles());
169    try {
170      cache.getSnapshotsInProgress();
171    } finally {
172      fs.delete(SnapshotDescriptionUtils.getWorkingSnapshotDir(rootDir,
173          TEST_UTIL.getConfiguration()), true);
174    }
175  }
176
177  @Test
178  public void testMissedTmpSnapshot() throws IOException {
179    SnapshotTestingUtils.SnapshotMock snapshotMock =
180        new SnapshotTestingUtils.SnapshotMock(conf, fs, rootDir);
181    SnapshotTestingUtils.SnapshotMock.SnapshotBuilder builder = snapshotMock.createSnapshotV2(
182        SNAPSHOT_NAME_STR, TABLE_NAME_STR);
183    builder.addRegionV2();
184    builder.missOneRegionSnapshotFile();
185    long period = Long.MAX_VALUE;
186    SnapshotFileCache cache = new SnapshotFileCache(conf, period, 10000000,
187        "test-snapshot-file-cache-refresh", new SnapshotFiles());
188    cache.getSnapshotsInProgress();
189    assertTrue(fs.exists(builder.getSnapshotsDir()));
190  }
191}