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.io.hfile.bucket; 019 020import static org.junit.Assert.assertArrayEquals; 021import static org.junit.Assert.assertEquals; 022import static org.junit.Assert.assertNotEquals; 023import static org.junit.Assert.assertNotNull; 024 025import java.io.File; 026import java.io.IOException; 027import java.nio.ByteBuffer; 028import java.nio.channels.FileChannel; 029import java.util.ArrayList; 030import java.util.List; 031import org.apache.hadoop.hbase.HBaseClassTestRule; 032import org.apache.hadoop.hbase.io.hfile.bucket.TestByteBufferIOEngine.BufferGrabbingDeserializer; 033import org.apache.hadoop.hbase.nio.ByteBuff; 034import org.apache.hadoop.hbase.testclassification.IOTests; 035import org.apache.hadoop.hbase.testclassification.SmallTests; 036import org.junit.After; 037import org.junit.Before; 038import org.junit.ClassRule; 039import org.junit.Test; 040import org.junit.experimental.categories.Category; 041 042/** 043 * Basic test for {@link FileIOEngine} 044 */ 045@Category({IOTests.class, SmallTests.class}) 046public class TestFileIOEngine { 047 048 @ClassRule 049 public static final HBaseClassTestRule CLASS_RULE = 050 HBaseClassTestRule.forClass(TestFileIOEngine.class); 051 052 private static final long TOTAL_CAPACITY = 6 * 1024 * 1024; // 6 MB 053 private static final String[] FILE_PATHS = {"testFileIOEngine1", "testFileIOEngine2", 054 "testFileIOEngine3"}; 055 private static final long SIZE_PER_FILE = TOTAL_CAPACITY / FILE_PATHS.length; // 2 MB per File 056 private final static List<Long> boundaryStartPositions = new ArrayList<Long>(); 057 private final static List<Long> boundaryStopPositions = new ArrayList<Long>(); 058 059 private FileIOEngine fileIOEngine; 060 061 static { 062 boundaryStartPositions.add(0L); 063 for (int i = 1; i < FILE_PATHS.length; i++) { 064 boundaryStartPositions.add(SIZE_PER_FILE * i - 1); 065 boundaryStartPositions.add(SIZE_PER_FILE * i); 066 boundaryStartPositions.add(SIZE_PER_FILE * i + 1); 067 } 068 for (int i = 1; i < FILE_PATHS.length; i++) { 069 boundaryStopPositions.add(SIZE_PER_FILE * i - 1); 070 boundaryStopPositions.add(SIZE_PER_FILE * i); 071 boundaryStopPositions.add(SIZE_PER_FILE * i + 1); 072 } 073 boundaryStopPositions.add(SIZE_PER_FILE * FILE_PATHS.length - 1); 074 } 075 076 @Before 077 public void setUp() throws IOException { 078 fileIOEngine = new FileIOEngine(TOTAL_CAPACITY, false, FILE_PATHS); 079 } 080 081 @After 082 public void cleanUp() { 083 fileIOEngine.shutdown(); 084 for (String filePath : FILE_PATHS) { 085 File file = new File(filePath); 086 if (file.exists()) { 087 file.delete(); 088 } 089 } 090 } 091 092 @Test 093 public void testFileIOEngine() throws IOException { 094 for (int i = 0; i < 500; i++) { 095 int len = (int) Math.floor(Math.random() * 100) + 1; 096 long offset = (long) Math.floor(Math.random() * TOTAL_CAPACITY % (TOTAL_CAPACITY - len)); 097 if (i < boundaryStartPositions.size()) { 098 // make the boundary start positon 099 offset = boundaryStartPositions.get(i); 100 } else if ((i - boundaryStartPositions.size()) < boundaryStopPositions.size()) { 101 // make the boundary stop positon 102 offset = boundaryStopPositions.get(i - boundaryStartPositions.size()) - len + 1; 103 } else if (i % 2 == 0) { 104 // make the cross-files block writing/reading 105 offset = Math.max(1, i % FILE_PATHS.length) * SIZE_PER_FILE - len / 2; 106 } 107 byte[] data1 = new byte[len]; 108 for (int j = 0; j < data1.length; ++j) { 109 data1[j] = (byte) (Math.random() * 255); 110 } 111 fileIOEngine.write(ByteBuffer.wrap(data1), offset); 112 BufferGrabbingDeserializer deserializer = new BufferGrabbingDeserializer(); 113 fileIOEngine.read(offset, len, deserializer); 114 ByteBuff data2 = deserializer.getDeserializedByteBuff(); 115 assertArrayEquals(data1, data2.array()); 116 } 117 } 118 119 @Test 120 public void testFileIOEngineHandlesZeroLengthInput() throws IOException { 121 byte[] data1 = new byte[0]; 122 123 fileIOEngine.write(ByteBuffer.wrap(data1), 0); 124 BufferGrabbingDeserializer deserializer = new BufferGrabbingDeserializer(); 125 fileIOEngine.read(0, 0, deserializer); 126 ByteBuff data2 = deserializer.getDeserializedByteBuff(); 127 assertArrayEquals(data1, data2.array()); 128 } 129 130 @Test 131 public void testClosedChannelException() throws IOException { 132 fileIOEngine.closeFileChannels(); 133 int len = 5; 134 long offset = 0L; 135 byte[] data1 = new byte[len]; 136 for (int j = 0; j < data1.length; ++j) { 137 data1[j] = (byte) (Math.random() * 255); 138 } 139 fileIOEngine.write(ByteBuffer.wrap(data1), offset); 140 BufferGrabbingDeserializer deserializer = new BufferGrabbingDeserializer(); 141 fileIOEngine.read(offset, len, deserializer); 142 ByteBuff data2 = deserializer.getDeserializedByteBuff(); 143 assertArrayEquals(data1, data2.array()); 144 } 145 146 @Test 147 public void testRefreshFileConnection() throws IOException { 148 FileChannel[] fileChannels = fileIOEngine.getFileChannels(); 149 FileChannel fileChannel = fileChannels[0]; 150 assertNotNull(fileChannel); 151 fileChannel.close(); 152 fileIOEngine.refreshFileConnection(0, new IOException("Test Exception")); 153 FileChannel[] reopenedFileChannels = fileIOEngine.getFileChannels(); 154 FileChannel reopenedFileChannel = reopenedFileChannels[0]; 155 assertNotEquals(fileChannel, reopenedFileChannel); 156 assertEquals(fileChannels.length, reopenedFileChannels.length); 157 for (int i = 1; i < fileChannels.length; i++) { 158 assertEquals(fileChannels[i], reopenedFileChannels[i]); 159 } 160 } 161}