| /** |
| * |
| * 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.hbase.util; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Random; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import junit.framework.TestCase; |
| |
| import org.apache.hadoop.hbase.testclassification.MiscTests; |
| import org.apache.hadoop.hbase.testclassification.SmallTests; |
| import org.apache.hadoop.hbase.util.PoolMap.PoolType; |
| import org.junit.experimental.categories.Category; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Suite; |
| |
| @RunWith(Suite.class) |
| @Suite.SuiteClasses({TestPoolMap.TestRoundRobinPoolType.class, TestPoolMap.TestThreadLocalPoolType.class, |
| TestPoolMap.TestReusablePoolType.class}) |
| @Category({MiscTests.class, SmallTests.class}) |
| public class TestPoolMap { |
| public abstract static class TestPoolType extends TestCase { |
| protected PoolMap<String, String> poolMap; |
| protected Random random = new Random(); |
| |
| protected static final int POOL_SIZE = 3; |
| |
| @Override |
| protected void setUp() throws Exception { |
| this.poolMap = new PoolMap<String, String>(getPoolType(), POOL_SIZE); |
| } |
| |
| protected abstract PoolType getPoolType(); |
| |
| @Override |
| protected void tearDown() throws Exception { |
| this.poolMap.clear(); |
| } |
| |
| protected void runThread(final String randomKey, final String randomValue, |
| final String expectedValue) throws InterruptedException { |
| final AtomicBoolean matchFound = new AtomicBoolean(false); |
| Thread thread = new Thread(new Runnable() { |
| @Override |
| public void run() { |
| poolMap.put(randomKey, randomValue); |
| String actualValue = poolMap.get(randomKey); |
| matchFound.set(expectedValue == null ? actualValue == null |
| : expectedValue.equals(actualValue)); |
| } |
| }); |
| thread.start(); |
| thread.join(); |
| assertTrue(matchFound.get()); |
| } |
| } |
| |
| @Category({MiscTests.class, SmallTests.class}) |
| public static class TestRoundRobinPoolType extends TestPoolType { |
| @Override |
| protected PoolType getPoolType() { |
| return PoolType.RoundRobin; |
| } |
| |
| public void testSingleThreadedClient() throws InterruptedException, |
| ExecutionException { |
| String randomKey = String.valueOf(random.nextInt()); |
| String randomValue = String.valueOf(random.nextInt()); |
| // As long as the pool is not full, we'll get null back. |
| // This forces the user to create new values that can be used to populate |
| // the pool. |
| runThread(randomKey, randomValue, null); |
| assertEquals(1, poolMap.size(randomKey)); |
| } |
| |
| public void testMultiThreadedClients() throws InterruptedException, |
| ExecutionException { |
| for (int i = 0; i < POOL_SIZE; i++) { |
| String randomKey = String.valueOf(random.nextInt()); |
| String randomValue = String.valueOf(random.nextInt()); |
| // As long as the pool is not full, we'll get null back |
| runThread(randomKey, randomValue, null); |
| // As long as we use distinct keys, each pool will have one value |
| assertEquals(1, poolMap.size(randomKey)); |
| } |
| poolMap.clear(); |
| String randomKey = String.valueOf(random.nextInt()); |
| for (int i = 0; i < POOL_SIZE - 1; i++) { |
| String randomValue = String.valueOf(random.nextInt()); |
| // As long as the pool is not full, we'll get null back |
| runThread(randomKey, randomValue, null); |
| // since we use the same key, the pool size should grow |
| assertEquals(i + 1, poolMap.size(randomKey)); |
| } |
| // at the end of the day, there should be as many values as we put |
| assertEquals(POOL_SIZE - 1, poolMap.size(randomKey)); |
| } |
| |
| public void testPoolCap() throws InterruptedException, ExecutionException { |
| String randomKey = String.valueOf(random.nextInt()); |
| List<String> randomValues = new ArrayList<String>(); |
| for (int i = 0; i < POOL_SIZE * 2; i++) { |
| String randomValue = String.valueOf(random.nextInt()); |
| randomValues.add(randomValue); |
| if (i < POOL_SIZE - 1) { |
| // As long as the pool is not full, we'll get null back |
| runThread(randomKey, randomValue, null); |
| } else { |
| // when the pool becomes full, we expect the value we get back to be |
| // what we put earlier, in round-robin order |
| runThread(randomKey, randomValue, |
| randomValues.get((i - POOL_SIZE + 1) % POOL_SIZE)); |
| } |
| } |
| assertEquals(POOL_SIZE, poolMap.size(randomKey)); |
| } |
| |
| } |
| |
| @Category({MiscTests.class, SmallTests.class}) |
| public static class TestThreadLocalPoolType extends TestPoolType { |
| @Override |
| protected PoolType getPoolType() { |
| return PoolType.ThreadLocal; |
| } |
| |
| public void testSingleThreadedClient() throws InterruptedException, |
| ExecutionException { |
| String randomKey = String.valueOf(random.nextInt()); |
| String randomValue = String.valueOf(random.nextInt()); |
| // As long as the pool is not full, we should get back what we put |
| runThread(randomKey, randomValue, randomValue); |
| assertEquals(1, poolMap.size(randomKey)); |
| } |
| |
| public void testMultiThreadedClients() throws InterruptedException, |
| ExecutionException { |
| // As long as the pool is not full, we should get back what we put |
| for (int i = 0; i < POOL_SIZE; i++) { |
| String randomKey = String.valueOf(random.nextInt()); |
| String randomValue = String.valueOf(random.nextInt()); |
| runThread(randomKey, randomValue, randomValue); |
| assertEquals(1, poolMap.size(randomKey)); |
| } |
| String randomKey = String.valueOf(random.nextInt()); |
| for (int i = 0; i < POOL_SIZE; i++) { |
| String randomValue = String.valueOf(random.nextInt()); |
| runThread(randomKey, randomValue, randomValue); |
| assertEquals(i + 1, poolMap.size(randomKey)); |
| } |
| } |
| |
| public void testPoolCap() throws InterruptedException, ExecutionException { |
| String randomKey = String.valueOf(random.nextInt()); |
| for (int i = 0; i < POOL_SIZE * 2; i++) { |
| String randomValue = String.valueOf(random.nextInt()); |
| // as of HBASE-4150, pool limit is no longer used with ThreadLocalPool |
| runThread(randomKey, randomValue, randomValue); |
| } |
| assertEquals(POOL_SIZE * 2, poolMap.size(randomKey)); |
| } |
| |
| } |
| |
| @Category({MiscTests.class, SmallTests.class}) |
| public static class TestReusablePoolType extends TestPoolType { |
| @Override |
| protected PoolType getPoolType() { |
| return PoolType.Reusable; |
| } |
| |
| public void testSingleThreadedClient() throws InterruptedException, |
| ExecutionException { |
| String randomKey = String.valueOf(random.nextInt()); |
| String randomValue = String.valueOf(random.nextInt()); |
| // As long as we poll values we put, the pool size should remain zero |
| runThread(randomKey, randomValue, randomValue); |
| assertEquals(0, poolMap.size(randomKey)); |
| } |
| |
| public void testMultiThreadedClients() throws InterruptedException, |
| ExecutionException { |
| // As long as we poll values we put, the pool size should remain zero |
| for (int i = 0; i < POOL_SIZE; i++) { |
| String randomKey = String.valueOf(random.nextInt()); |
| String randomValue = String.valueOf(random.nextInt()); |
| runThread(randomKey, randomValue, randomValue); |
| assertEquals(0, poolMap.size(randomKey)); |
| } |
| poolMap.clear(); |
| String randomKey = String.valueOf(random.nextInt()); |
| for (int i = 0; i < POOL_SIZE - 1; i++) { |
| String randomValue = String.valueOf(random.nextInt()); |
| runThread(randomKey, randomValue, randomValue); |
| assertEquals(0, poolMap.size(randomKey)); |
| } |
| assertEquals(0, poolMap.size(randomKey)); |
| } |
| |
| public void testPoolCap() throws InterruptedException, ExecutionException { |
| // As long as we poll values we put, the pool size should remain zero |
| String randomKey = String.valueOf(random.nextInt()); |
| List<String> randomValues = new ArrayList<String>(); |
| for (int i = 0; i < POOL_SIZE * 2; i++) { |
| String randomValue = String.valueOf(random.nextInt()); |
| randomValues.add(randomValue); |
| runThread(randomKey, randomValue, randomValue); |
| } |
| assertEquals(0, poolMap.size(randomKey)); |
| } |
| |
| } |
| |
| } |
| |