hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/compress/TestCodecPool.java - hadoop - Git at Google

 /**
  * 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.hadoop.io.compress;

 import static org.junit.Assert.assertEquals;

 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.OutputStream;
 import java.util.Random;
 import java.util.concurrent.Callable;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.LinkedBlockingDeque;
 import java.util.concurrent.TimeUnit;

 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.io.compress.zlib.BuiltInGzipCompressor;
 import org.apache.hadoop.io.compress.zlib.BuiltInGzipDecompressor;
 import org.apache.hadoop.test.LambdaTestUtils;
 import org.junit.Before;
 import org.junit.Test;

 import java.util.HashSet;
 import java.util.Set;

 public class TestCodecPool {
   private final String LEASE_COUNT_ERR =
       "Incorrect number of leased (de)compressors";
   DefaultCodec codec;

   @Before
   public void setup() {
     this.codec = new DefaultCodec();
     this.codec.setConf(new Configuration());
   }

   @Test(timeout = 10000)
   public void testCompressorPoolCounts() {
     // Get two compressors and return them
     Compressor comp1 = CodecPool.getCompressor(codec);
     Compressor comp2 = CodecPool.getCompressor(codec);
     assertEquals(LEASE_COUNT_ERR, 2,
         CodecPool.getLeasedCompressorsCount(codec));

     CodecPool.returnCompressor(comp2);
     assertEquals(LEASE_COUNT_ERR, 1,
         CodecPool.getLeasedCompressorsCount(codec));

     CodecPool.returnCompressor(comp1);
     assertEquals(LEASE_COUNT_ERR, 0,
         CodecPool.getLeasedCompressorsCount(codec));

     CodecPool.returnCompressor(comp1);
     assertEquals(LEASE_COUNT_ERR, 0,
         CodecPool.getLeasedCompressorsCount(codec));
   }

   @Test(timeout = 10000)
   public void testCompressorNotReturnSameInstance() {
     Compressor comp = CodecPool.getCompressor(codec);
     CodecPool.returnCompressor(comp);
     CodecPool.returnCompressor(comp);
     Set<Compressor> compressors = new HashSet<>();
     for (int i = 0; i < 10; ++i) {
       compressors.add(CodecPool.getCompressor(codec));
     }
     assertEquals(10, compressors.size());
     for (Compressor compressor : compressors) {
       CodecPool.returnCompressor(compressor);
     }
   }

   @Test(timeout = 10000)
   public void testDecompressorPoolCounts() {
     // Get two decompressors and return them
     Decompressor decomp1 = CodecPool.getDecompressor(codec);
     Decompressor decomp2 = CodecPool.getDecompressor(codec);
     assertEquals(LEASE_COUNT_ERR, 2,
         CodecPool.getLeasedDecompressorsCount(codec));

     CodecPool.returnDecompressor(decomp2);
     assertEquals(LEASE_COUNT_ERR, 1,
         CodecPool.getLeasedDecompressorsCount(codec));

     CodecPool.returnDecompressor(decomp1);
     assertEquals(LEASE_COUNT_ERR, 0,
         CodecPool.getLeasedDecompressorsCount(codec));

     CodecPool.returnDecompressor(decomp1);
     assertEquals(LEASE_COUNT_ERR, 0,
         CodecPool.getLeasedCompressorsCount(codec));
   }

   @Test(timeout = 10000)
   public void testMultiThreadedCompressorPool() throws InterruptedException {
     final int iterations = 4;
     ExecutorService threadpool = Executors.newFixedThreadPool(3);
     final LinkedBlockingDeque<Compressor> queue = new LinkedBlockingDeque<Compressor>(
         2 * iterations);

     Callable<Boolean> consumer = new Callable<Boolean>() {
       @Override
       public Boolean call() throws Exception {
         Compressor c = queue.take();
         CodecPool.returnCompressor(c);
         return c != null;
       }
     };

     Callable<Boolean> producer = new Callable<Boolean>() {
       @Override
       public Boolean call() throws Exception {
         Compressor c = CodecPool.getCompressor(codec);
         queue.put(c);
         return c != null;
       }
     };

     for (int i = 0; i < iterations; i++) {
       threadpool.submit(consumer);
       threadpool.submit(producer);
     }

     // wait for completion
     threadpool.shutdown();
     threadpool.awaitTermination(1000, TimeUnit.SECONDS);

     assertEquals(LEASE_COUNT_ERR, 0, CodecPool.getLeasedCompressorsCount(codec));
   }

   @Test(timeout = 10000)
   public void testMultiThreadedDecompressorPool() throws InterruptedException {
     final int iterations = 4;
     ExecutorService threadpool = Executors.newFixedThreadPool(3);
     final LinkedBlockingDeque<Decompressor> queue = new LinkedBlockingDeque<Decompressor>(
         2 * iterations);

     Callable<Boolean> consumer = new Callable<Boolean>() {
       @Override
       public Boolean call() throws Exception {
         Decompressor dc = queue.take();
         CodecPool.returnDecompressor(dc);
         return dc != null;
       }
     };

     Callable<Boolean> producer = new Callable<Boolean>() {
       @Override
       public Boolean call() throws Exception {
         Decompressor c = CodecPool.getDecompressor(codec);
         queue.put(c);
         return c != null;
       }
     };

     for (int i = 0; i < iterations; i++) {
       threadpool.submit(consumer);
       threadpool.submit(producer);
     }

     // wait for completion
     threadpool.shutdown();
     threadpool.awaitTermination(1000, TimeUnit.SECONDS);

     assertEquals(LEASE_COUNT_ERR, 0,
         CodecPool.getLeasedDecompressorsCount(codec));
   }

   @Test(timeout = 10000)
   public void testDecompressorNotReturnSameInstance() {
     Decompressor decomp = CodecPool.getDecompressor(codec);
     CodecPool.returnDecompressor(decomp);
     CodecPool.returnDecompressor(decomp);
     Set<Decompressor> decompressors = new HashSet<>();
     for (int i = 0; i < 10; ++i) {
       decompressors.add(CodecPool.getDecompressor(codec));
     }
     assertEquals(10, decompressors.size());
     for (Decompressor decompressor : decompressors) {
       CodecPool.returnDecompressor(decompressor);
     }
   }

   @Test(timeout = 10000)
   public void testDoNotPoolCompressorNotUseableAfterReturn() throws Exception {

     final GzipCodec gzipCodec = new GzipCodec();
     gzipCodec.setConf(new Configuration());

     // BuiltInGzipCompressor is an explicit example of a Compressor with the @DoNotPool annotation
     final Compressor compressor = new BuiltInGzipCompressor(new Configuration());
     CodecPool.returnCompressor(compressor);

     final CompressionOutputStream outputStream =
             gzipCodec.createOutputStream(new ByteArrayOutputStream(), compressor);
     LambdaTestUtils.intercept(
             AlreadyClosedException.class,
             "compress called on closed compressor",
             "Compressor from Codec with @DoNotPool should not be " +
                     "useable after returning to CodecPool",
         () -> outputStream.write(1));
   }

   @Test(timeout = 10000)
   public void testDoNotPoolDecompressorNotUseableAfterReturn() throws Exception {

     final GzipCodec gzipCodec = new GzipCodec();
     gzipCodec.setConf(new Configuration());

     final Random random = new Random();
     final byte[] bytes = new byte[1024];
     random.nextBytes(bytes);

     ByteArrayOutputStream baos = new ByteArrayOutputStream();
     try (OutputStream outputStream = gzipCodec.createOutputStream(baos)) {
       outputStream.write(bytes);
     }

     final byte[] gzipBytes = baos.toByteArray();
     final ByteArrayInputStream bais = new ByteArrayInputStream(gzipBytes);

     // BuiltInGzipDecompressor is an explicit example of a Decompressor
     // with the @DoNotPool annotation
     final Decompressor decompressor = new BuiltInGzipDecompressor();
     CodecPool.returnDecompressor(decompressor);

     final CompressionInputStream inputStream = gzipCodec.createInputStream(bais, decompressor);
     LambdaTestUtils.intercept(
             AlreadyClosedException.class,
             "decompress called on closed decompressor",
             "Decompressor from Codec with @DoNotPool should not be " +
                     "useable after returning to CodecPool",
         () -> inputStream.read());
   }
 }
	/**
	* 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.hadoop.io.compress;

	import static org.junit.Assert.assertEquals;

	import java.io.ByteArrayInputStream;
	import java.io.ByteArrayOutputStream;
	import java.io.OutputStream;
	import java.util.Random;
	import java.util.concurrent.Callable;
	import java.util.concurrent.ExecutorService;
	import java.util.concurrent.Executors;
	import java.util.concurrent.LinkedBlockingDeque;
	import java.util.concurrent.TimeUnit;

	import org.apache.hadoop.conf.Configuration;
	import org.apache.hadoop.io.compress.zlib.BuiltInGzipCompressor;
	import org.apache.hadoop.io.compress.zlib.BuiltInGzipDecompressor;
	import org.apache.hadoop.test.LambdaTestUtils;
	import org.junit.Before;
	import org.junit.Test;

	import java.util.HashSet;
	import java.util.Set;

	public class TestCodecPool {
	private final String LEASE_COUNT_ERR =
	"Incorrect number of leased (de)compressors";
	DefaultCodec codec;

	@Before
	public void setup() {
	this.codec = new DefaultCodec();
	this.codec.setConf(new Configuration());
	}

	@Test(timeout = 10000)
	public void testCompressorPoolCounts() {
	// Get two compressors and return them
	Compressor comp1 = CodecPool.getCompressor(codec);
	Compressor comp2 = CodecPool.getCompressor(codec);
	assertEquals(LEASE_COUNT_ERR, 2,
	CodecPool.getLeasedCompressorsCount(codec));

	CodecPool.returnCompressor(comp2);
	assertEquals(LEASE_COUNT_ERR, 1,
	CodecPool.getLeasedCompressorsCount(codec));

	CodecPool.returnCompressor(comp1);
	assertEquals(LEASE_COUNT_ERR, 0,
	CodecPool.getLeasedCompressorsCount(codec));

	CodecPool.returnCompressor(comp1);
	assertEquals(LEASE_COUNT_ERR, 0,
	CodecPool.getLeasedCompressorsCount(codec));
	}

	@Test(timeout = 10000)
	public void testCompressorNotReturnSameInstance() {
	Compressor comp = CodecPool.getCompressor(codec);
	CodecPool.returnCompressor(comp);
	CodecPool.returnCompressor(comp);
	Set<Compressor> compressors = new HashSet<>();
	for (int i = 0; i < 10; ++i) {
	compressors.add(CodecPool.getCompressor(codec));
	}
	assertEquals(10, compressors.size());
	for (Compressor compressor : compressors) {
	CodecPool.returnCompressor(compressor);
	}
	}

	@Test(timeout = 10000)
	public void testDecompressorPoolCounts() {
	// Get two decompressors and return them
	Decompressor decomp1 = CodecPool.getDecompressor(codec);
	Decompressor decomp2 = CodecPool.getDecompressor(codec);
	assertEquals(LEASE_COUNT_ERR, 2,
	CodecPool.getLeasedDecompressorsCount(codec));

	CodecPool.returnDecompressor(decomp2);
	assertEquals(LEASE_COUNT_ERR, 1,
	CodecPool.getLeasedDecompressorsCount(codec));

	CodecPool.returnDecompressor(decomp1);
	assertEquals(LEASE_COUNT_ERR, 0,
	CodecPool.getLeasedDecompressorsCount(codec));

	CodecPool.returnDecompressor(decomp1);
	assertEquals(LEASE_COUNT_ERR, 0,
	CodecPool.getLeasedCompressorsCount(codec));
	}

	@Test(timeout = 10000)
	public void testMultiThreadedCompressorPool() throws InterruptedException {
	final int iterations = 4;
	ExecutorService threadpool = Executors.newFixedThreadPool(3);
	final LinkedBlockingDeque<Compressor> queue = new LinkedBlockingDeque<Compressor>(
	2 * iterations);

	Callable<Boolean> consumer = new Callable<Boolean>() {
	@Override
	public Boolean call() throws Exception {
	Compressor c = queue.take();
	CodecPool.returnCompressor(c);
	return c != null;
	}
	};

	Callable<Boolean> producer = new Callable<Boolean>() {
	@Override
	public Boolean call() throws Exception {
	Compressor c = CodecPool.getCompressor(codec);
	queue.put(c);
	return c != null;
	}
	};

	for (int i = 0; i < iterations; i++) {
	threadpool.submit(consumer);
	threadpool.submit(producer);
	}

	// wait for completion
	threadpool.shutdown();
	threadpool.awaitTermination(1000, TimeUnit.SECONDS);

	assertEquals(LEASE_COUNT_ERR, 0, CodecPool.getLeasedCompressorsCount(codec));
	}

	@Test(timeout = 10000)
	public void testMultiThreadedDecompressorPool() throws InterruptedException {
	final int iterations = 4;
	ExecutorService threadpool = Executors.newFixedThreadPool(3);
	final LinkedBlockingDeque<Decompressor> queue = new LinkedBlockingDeque<Decompressor>(
	2 * iterations);

	Callable<Boolean> consumer = new Callable<Boolean>() {
	@Override
	public Boolean call() throws Exception {
	Decompressor dc = queue.take();
	CodecPool.returnDecompressor(dc);
	return dc != null;
	}
	};

	Callable<Boolean> producer = new Callable<Boolean>() {
	@Override
	public Boolean call() throws Exception {
	Decompressor c = CodecPool.getDecompressor(codec);
	queue.put(c);
	return c != null;
	}
	};

	for (int i = 0; i < iterations; i++) {
	threadpool.submit(consumer);
	threadpool.submit(producer);
	}

	// wait for completion
	threadpool.shutdown();
	threadpool.awaitTermination(1000, TimeUnit.SECONDS);

	assertEquals(LEASE_COUNT_ERR, 0,
	CodecPool.getLeasedDecompressorsCount(codec));
	}

	@Test(timeout = 10000)
	public void testDecompressorNotReturnSameInstance() {
	Decompressor decomp = CodecPool.getDecompressor(codec);
	CodecPool.returnDecompressor(decomp);
	CodecPool.returnDecompressor(decomp);
	Set<Decompressor> decompressors = new HashSet<>();
	for (int i = 0; i < 10; ++i) {
	decompressors.add(CodecPool.getDecompressor(codec));
	}
	assertEquals(10, decompressors.size());
	for (Decompressor decompressor : decompressors) {
	CodecPool.returnDecompressor(decompressor);
	}
	}

	@Test(timeout = 10000)
	public void testDoNotPoolCompressorNotUseableAfterReturn() throws Exception {

	final GzipCodec gzipCodec = new GzipCodec();
	gzipCodec.setConf(new Configuration());

	// BuiltInGzipCompressor is an explicit example of a Compressor with the @DoNotPool annotation
	final Compressor compressor = new BuiltInGzipCompressor(new Configuration());
	CodecPool.returnCompressor(compressor);

	final CompressionOutputStream outputStream =
	gzipCodec.createOutputStream(new ByteArrayOutputStream(), compressor);
	LambdaTestUtils.intercept(
	AlreadyClosedException.class,
	"compress called on closed compressor",
	"Compressor from Codec with @DoNotPool should not be " +
	"useable after returning to CodecPool",
	() -> outputStream.write(1));
	}

	@Test(timeout = 10000)
	public void testDoNotPoolDecompressorNotUseableAfterReturn() throws Exception {

	final GzipCodec gzipCodec = new GzipCodec();
	gzipCodec.setConf(new Configuration());

	final Random random = new Random();
	final byte[] bytes = new byte[1024];
	random.nextBytes(bytes);

	ByteArrayOutputStream baos = new ByteArrayOutputStream();
	try (OutputStream outputStream = gzipCodec.createOutputStream(baos)) {
	outputStream.write(bytes);
	}

	final byte[] gzipBytes = baos.toByteArray();
	final ByteArrayInputStream bais = new ByteArrayInputStream(gzipBytes);

	// BuiltInGzipDecompressor is an explicit example of a Decompressor
	// with the @DoNotPool annotation
	final Decompressor decompressor = new BuiltInGzipDecompressor();
	CodecPool.returnDecompressor(decompressor);

	final CompressionInputStream inputStream = gzipCodec.createInputStream(bais, decompressor);
	LambdaTestUtils.intercept(
	AlreadyClosedException.class,
	"decompress called on closed decompressor",
	"Decompressor from Codec with @DoNotPool should not be " +
	"useable after returning to CodecPool",
	() -> inputStream.read());
	}
	}