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.util;
019
020import static org.junit.Assert.assertEquals;
021
022import java.util.Random;
023import java.util.concurrent.ExecutionException;
024import java.util.concurrent.ThreadLocalRandom;
025import org.apache.hadoop.hbase.HBaseClassTestRule;
026import org.apache.hadoop.hbase.testclassification.MiscTests;
027import org.apache.hadoop.hbase.testclassification.SmallTests;
028import org.apache.hadoop.hbase.util.PoolMap.PoolType;
029import org.junit.ClassRule;
030import org.junit.Test;
031import org.junit.experimental.categories.Category;
032
033@Category({ MiscTests.class, SmallTests.class })
034public class TestThreadLocalPoolMap extends PoolMapTestBase {
035
036  @ClassRule
037  public static final HBaseClassTestRule CLASS_RULE =
038      HBaseClassTestRule.forClass(TestThreadLocalPoolMap.class);
039
040  @Override
041  protected PoolType getPoolType() {
042    return PoolType.ThreadLocal;
043  }
044
045  @Test
046  public void testSingleThreadedClient() throws InterruptedException, ExecutionException {
047    Random rand = ThreadLocalRandom.current();
048    String randomKey = String.valueOf(rand.nextInt());
049    String randomValue = String.valueOf(rand.nextInt());
050    // As long as the pool is not full, we should get back what we put
051    runThread(randomKey, randomValue, randomValue);
052    assertEquals(1, poolMap.size(randomKey));
053  }
054
055  @Test
056  public void testMultiThreadedClients() throws InterruptedException, ExecutionException {
057    Random rand = ThreadLocalRandom.current();
058    // As long as the pool is not full, we should get back what we put
059    for (int i = 0; i < POOL_SIZE; i++) {
060      String randomKey = String.valueOf(rand.nextInt());
061      String randomValue = String.valueOf(rand.nextInt());
062      runThread(randomKey, randomValue, randomValue);
063      assertEquals(1, poolMap.size(randomKey));
064    }
065    String randomKey = String.valueOf(rand.nextInt());
066    for (int i = 0; i < POOL_SIZE; i++) {
067      String randomValue = String.valueOf(rand.nextInt());
068      runThread(randomKey, randomValue, randomValue);
069      assertEquals(i + 1, poolMap.size(randomKey));
070    }
071  }
072
073  @Test
074  public void testPoolCap() throws InterruptedException, ExecutionException {
075    Random rand = ThreadLocalRandom.current();
076    String randomKey = String.valueOf(rand.nextInt());
077    for (int i = 0; i < POOL_SIZE * 2; i++) {
078      String randomValue = String.valueOf(rand.nextInt());
079      // as of HBASE-4150, pool limit is no longer used with ThreadLocalPool
080      runThread(randomKey, randomValue, randomValue);
081    }
082    assertEquals(POOL_SIZE * 2, poolMap.size(randomKey));
083  }
084}