| /** |
| * 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 static org.junit.Assert.assertEquals; |
| |
| import java.io.IOException; |
| import java.util.Random; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.CompletionException; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ThreadLocalRandom; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| 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.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| @Category({ MiscTests.class, SmallTests.class }) |
| public class TestThreadLocalPoolMap extends PoolMapTestBase { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestThreadLocalPoolMap.class); |
| |
| @Override |
| protected PoolType getPoolType() { |
| return PoolType.ThreadLocal; |
| } |
| |
| @Test |
| public void testGetOrCreate() throws IOException { |
| String key = "key"; |
| String value = "value"; |
| String result = poolMap.getOrCreate(key, () -> value); |
| |
| assertEquals(value, result); |
| assertEquals(1, poolMap.values().size()); |
| } |
| |
| @Test |
| public void testMultipleKeys() throws IOException { |
| for (int i = 0; i < KEY_COUNT; i++) { |
| String key = Integer.toString(i); |
| String value = Integer.toString(2 * i); |
| String result = poolMap.getOrCreate(key, () -> value); |
| |
| assertEquals(value, result); |
| } |
| |
| assertEquals(KEY_COUNT, poolMap.values().size()); |
| } |
| |
| @Test |
| public void testFull() throws IOException { |
| String key = "key"; |
| String value = "value"; |
| |
| String result = poolMap.getOrCreate(key, () -> value); |
| assertEquals(value, result); |
| |
| String result2 = poolMap.getOrCreate(key, () -> { |
| throw new IOException("must not call me"); |
| }); |
| |
| assertEquals(value, result2); |
| assertEquals(1, poolMap.values().size()); |
| } |
| |
| @Test |
| public void testLocality() throws ExecutionException, InterruptedException { |
| String key = "key"; |
| AtomicInteger id = new AtomicInteger(); |
| |
| Runnable runnable = () -> { |
| try { |
| String myId = Integer.toString(id.getAndIncrement()); |
| |
| for (int i = 0; i < 3; i++) { |
| String result = poolMap.getOrCreate(key, () -> myId); |
| assertEquals(myId, result); |
| |
| Thread.yield(); |
| } |
| } catch (IOException e) { |
| throw new CompletionException(e); |
| } |
| }; |
| |
| CompletableFuture<Void> future1 = CompletableFuture.runAsync(runnable); |
| CompletableFuture<Void> future2 = CompletableFuture.runAsync(runnable); |
| |
| /* test for successful completion */ |
| future1.get(); |
| future2.get(); |
| |
| assertEquals(2, poolMap.values().size()); |
| } |
| } |