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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.runtime.io.disk;
import static org.junit.Assert.*;
import org.apache.flink.core.memory.MemoryType;
import org.apache.flink.util.TestLogger;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.apache.flink.core.memory.MemorySegment;
import org.apache.flink.runtime.io.disk.iomanager.BlockChannelReader;
import org.apache.flink.runtime.io.disk.iomanager.BlockChannelWriter;
import org.apache.flink.runtime.io.disk.iomanager.FileIOChannel;
import org.apache.flink.runtime.io.disk.iomanager.IOManager;
import org.apache.flink.runtime.io.disk.iomanager.IOManagerAsync;
import org.apache.flink.runtime.memory.MemoryManager;
import org.apache.flink.runtime.operators.testutils.DummyInvokable;
import org.apache.flink.runtime.operators.testutils.PairGenerator;
import org.apache.flink.runtime.operators.testutils.PairGenerator.KeyMode;
import org.apache.flink.runtime.operators.testutils.PairGenerator.Pair;
import org.apache.flink.runtime.operators.testutils.PairGenerator.ValueMode;
import java.io.EOFException;
import java.util.List;
public class FileChannelStreamsITCase extends TestLogger {
private static final long SEED = 649180756312423613L;
private static final int KEY_MAX = Integer.MAX_VALUE;
private static final int VALUE_SHORT_LENGTH = 114;
private static final int VALUE_LONG_LENGTH = 112 * 1024;
private static final int NUM_PAIRS_SHORT = 1000000;
private static final int NUM_PAIRS_LONG = 3000;
private static final int MEMORY_PAGE_SIZE = 32 * 1024;
private static final int NUM_MEMORY_SEGMENTS = 3;
private IOManager ioManager;
private MemoryManager memManager;
// --------------------------------------------------------------------------------------------
@Before
public void beforeTest() {
memManager = new MemoryManager(NUM_MEMORY_SEGMENTS * MEMORY_PAGE_SIZE, 1,
MEMORY_PAGE_SIZE, MemoryType.HEAP, true);
ioManager = new IOManagerAsync();
}
@After
public void afterTest() {
ioManager.shutdown();
assertTrue("I/O Manager was not properly shut down.", ioManager.isProperlyShutDown());
assertTrue("The memory has not been properly released", memManager.verifyEmpty());
}
// --------------------------------------------------------------------------------------------
@Test
public void testWriteReadSmallRecords() {
try {
List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS);
final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
final FileIOChannel.ID channel = ioManager.createChannel();
// create the writer output view
final BlockChannelWriter<MemorySegment> writer = ioManager.createBlockChannelWriter(channel);
final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE);
// write a number of pairs
Pair pair = new Pair();
for (int i = 0; i < NUM_PAIRS_SHORT; i++) {
generator.next(pair);
pair.write(outView);
}
outView.close();
// create the reader input view
List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS);
final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel);
final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment());
generator.reset();
// read and re-generate all records and compare them
Pair readPair = new Pair();
for (int i = 0; i < NUM_PAIRS_SHORT; i++) {
generator.next(pair);
readPair.read(inView);
assertEquals("The re-generated and the read record do not match.", pair, readPair);
}
inView.close();
reader.deleteChannel();
}
catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
@Test
public void testWriteAndReadLongRecords() {
try {
final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS);
final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_LONG_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
final FileIOChannel.ID channel = this.ioManager.createChannel();
// create the writer output view
final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel);
final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE);
// write a number of pairs
Pair pair = new Pair();
for (int i = 0; i < NUM_PAIRS_LONG; i++) {
generator.next(pair);
pair.write(outView);
}
outView.close();
// create the reader input view
List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS);
final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel);
final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment());
generator.reset();
// read and re-generate all records and compare them
Pair readPair = new Pair();
for (int i = 0; i < NUM_PAIRS_LONG; i++) {
generator.next(pair);
readPair.read(inView);
assertEquals("The re-generated and the read record do not match.", pair, readPair);
}
inView.close();
reader.deleteChannel();
}
catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
@Test
public void testReadTooMany() {
try {
final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS);
final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
final FileIOChannel.ID channel = this.ioManager.createChannel();
// create the writer output view
final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel);
final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE);
// write a number of pairs
Pair pair = new Pair();
for (int i = 0; i < NUM_PAIRS_SHORT; i++) {
generator.next(pair);
pair.write(outView);
}
outView.close();
// create the reader input view
List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS);
final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel);
final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment());
generator.reset();
// read and re-generate all records and compare them
try {
Pair readPair = new Pair();
for (int i = 0; i < NUM_PAIRS_SHORT + 1; i++) {
generator.next(pair);
readPair.read(inView);
assertEquals("The re-generated and the read record do not match.", pair, readPair);
}
fail("Expected an EOFException which did not occur.");
}
catch (EOFException eofex) {
// expected
}
inView.close();
reader.deleteChannel();
}
catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
@Test
public void testWriteReadOneBufferOnly() {
try {
final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), 1);
final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
final FileIOChannel.ID channel = this.ioManager.createChannel();
// create the writer output view
final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel);
final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE);
// write a number of pairs
Pair pair = new Pair();
for (int i = 0; i < NUM_PAIRS_SHORT; i++) {
generator.next(pair);
pair.write(outView);
}
outView.close();
// create the reader input view
List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), 1);
final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel);
final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment());
generator.reset();
// read and re-generate all records and compare them
Pair readPair = new Pair();
for (int i = 0; i < NUM_PAIRS_SHORT; i++) {
generator.next(pair);
readPair.read(inView);
assertEquals("The re-generated and the read record do not match.", pair, readPair);
}
inView.close();
reader.deleteChannel();
}
catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
@Test
public void testWriteReadNotAll() {
try {
final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS);
final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
final FileIOChannel.ID channel = this.ioManager.createChannel();
// create the writer output view
final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel);
final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE);
// write a number of pairs
Pair pair = new Pair();
for (int i = 0; i < NUM_PAIRS_SHORT; i++) {
generator.next(pair);
pair.write(outView);
}
outView.close();
// create the reader input view
List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS);
final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel);
final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment());
generator.reset();
// read and re-generate all records and compare them
Pair readPair = new Pair();
for (int i = 0; i < NUM_PAIRS_SHORT / 2; i++) {
generator.next(pair);
readPair.read(inView);
assertEquals("The re-generated and the read record do not match.", pair, readPair);
}
inView.close();
reader.deleteChannel();
}
catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
}