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.mob;
019
020import static org.junit.Assert.assertNotNull;
021import static org.junit.Assert.assertNull;
022import static org.junit.Assert.assertTrue;
023
024import org.apache.hadoop.conf.Configuration;
025import org.apache.hadoop.fs.FileSystem;
026import org.apache.hadoop.fs.Path;
027import org.apache.hadoop.hbase.Cell;
028import org.apache.hadoop.hbase.HBaseClassTestRule;
029import org.apache.hadoop.hbase.HBaseTestingUtility;
030import org.apache.hadoop.hbase.KeyValue;
031import org.apache.hadoop.hbase.KeyValue.Type;
032import org.apache.hadoop.hbase.io.hfile.CacheConfig;
033import org.apache.hadoop.hbase.io.hfile.HFileContext;
034import org.apache.hadoop.hbase.io.hfile.HFileContextBuilder;
035import org.apache.hadoop.hbase.regionserver.BloomType;
036import org.apache.hadoop.hbase.regionserver.HStoreFile;
037import org.apache.hadoop.hbase.regionserver.StoreFileScanner;
038import org.apache.hadoop.hbase.regionserver.StoreFileWriter;
039import org.apache.hadoop.hbase.testclassification.SmallTests;
040import org.apache.hadoop.hbase.util.Bytes;
041import org.junit.ClassRule;
042import org.junit.Rule;
043import org.junit.Test;
044import org.junit.experimental.categories.Category;
045import org.junit.rules.TestName;
046
047@Category(SmallTests.class)
048public class TestMobFile {
049
050  @ClassRule
051  public static final HBaseClassTestRule CLASS_RULE =
052    HBaseClassTestRule.forClass(TestMobFile.class);
053
054  private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
055  private Configuration conf = TEST_UTIL.getConfiguration();
056  private CacheConfig cacheConf = new CacheConfig(conf);
057  @Rule
058  public TestName testName = new TestName();
059
060  @Test
061  public void testReadKeyValue() throws Exception {
062    Path testDir = TEST_UTIL.getDataTestDir();
063    FileSystem fs = testDir.getFileSystem(conf);
064    HFileContext meta = new HFileContextBuilder().withBlockSize(8 * 1024).build();
065    StoreFileWriter writer = new StoreFileWriter.Builder(conf, cacheConf, fs).withOutputDir(testDir)
066      .withFileContext(meta).build();
067    String caseName = testName.getMethodName();
068    MobTestUtil.writeStoreFile(writer, caseName);
069
070    MobFile mobFile =
071      new MobFile(new HStoreFile(fs, writer.getPath(), conf, cacheConf, BloomType.NONE, true));
072    byte[] family = Bytes.toBytes(caseName);
073    byte[] qualify = Bytes.toBytes(caseName);
074
075    // Test the start key
076    byte[] startKey = Bytes.toBytes("aa"); // The start key bytes
077    KeyValue expectedKey =
078      new KeyValue(startKey, family, qualify, Long.MAX_VALUE, Type.Put, startKey);
079    KeyValue seekKey = expectedKey.createKeyOnly(false);
080    Cell cell = mobFile.readCell(seekKey, false).getCell();
081    MobTestUtil.assertCellEquals(expectedKey, cell);
082
083    // Test the end key
084    byte[] endKey = Bytes.toBytes("zz"); // The end key bytes
085    expectedKey = new KeyValue(endKey, family, qualify, Long.MAX_VALUE, Type.Put, endKey);
086    seekKey = expectedKey.createKeyOnly(false);
087    cell = mobFile.readCell(seekKey, false).getCell();
088    MobTestUtil.assertCellEquals(expectedKey, cell);
089
090    // Test the random key
091    byte[] randomKey = Bytes.toBytes(MobTestUtil.generateRandomString(2));
092    expectedKey = new KeyValue(randomKey, family, qualify, Long.MAX_VALUE, Type.Put, randomKey);
093    seekKey = expectedKey.createKeyOnly(false);
094    cell = mobFile.readCell(seekKey, false).getCell();
095    MobTestUtil.assertCellEquals(expectedKey, cell);
096
097    // Test the key which is less than the start key
098    byte[] lowerKey = Bytes.toBytes("a1"); // Smaller than "aa"
099    expectedKey = new KeyValue(startKey, family, qualify, Long.MAX_VALUE, Type.Put, startKey);
100    seekKey = new KeyValue(lowerKey, family, qualify, Long.MAX_VALUE, Type.Put, lowerKey);
101    cell = mobFile.readCell(seekKey, false).getCell();
102    MobTestUtil.assertCellEquals(expectedKey, cell);
103
104    // Test the key which is more than the end key
105    byte[] upperKey = Bytes.toBytes("z{"); // Bigger than "zz"
106    seekKey = new KeyValue(upperKey, family, qualify, Long.MAX_VALUE, Type.Put, upperKey);
107    assertNull(mobFile.readCell(seekKey, false));
108  }
109
110  @Test
111  public void testGetScanner() throws Exception {
112    Path testDir = TEST_UTIL.getDataTestDir();
113    FileSystem fs = testDir.getFileSystem(conf);
114    HFileContext meta = new HFileContextBuilder().withBlockSize(8 * 1024).build();
115    StoreFileWriter writer = new StoreFileWriter.Builder(conf, cacheConf, fs).withOutputDir(testDir)
116      .withFileContext(meta).build();
117    MobTestUtil.writeStoreFile(writer, testName.getMethodName());
118
119    MobFile mobFile =
120      new MobFile(new HStoreFile(fs, writer.getPath(), conf, cacheConf, BloomType.NONE, true));
121    assertNotNull(mobFile.getScanner());
122    assertTrue(mobFile.getScanner() instanceof StoreFileScanner);
123  }
124}