| /** |
| * 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.regionserver; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.lang.management.ManagementFactory; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Random; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.ByteBufferKeyValue; |
| import org.apache.hadoop.hbase.Cell; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.HBaseConfiguration; |
| import org.apache.hadoop.hbase.KeyValue; |
| import org.apache.hadoop.hbase.testclassification.RegionServerTests; |
| import org.apache.hadoop.hbase.testclassification.SmallTests; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.junit.BeforeClass; |
| import org.junit.ClassRule; |
| import org.junit.Ignore; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| @Ignore // See HBASE-19742 for issue on reenabling. |
| @Category({RegionServerTests.class, SmallTests.class}) |
| public class TestMemstoreLABWithoutPool { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestMemstoreLABWithoutPool.class); |
| |
| private final static Configuration conf = new Configuration(); |
| |
| private static final byte[] rk = Bytes.toBytes("r1"); |
| private static final byte[] cf = Bytes.toBytes("f"); |
| private static final byte[] q = Bytes.toBytes("q"); |
| |
| @BeforeClass |
| public static void setUpBeforeClass() throws Exception { |
| long globalMemStoreLimit = (long) (ManagementFactory.getMemoryMXBean().getHeapMemoryUsage() |
| .getMax() * 0.8); |
| // disable pool |
| ChunkCreator.initialize(MemStoreLABImpl.CHUNK_SIZE_DEFAULT + Bytes.SIZEOF_LONG, |
| false, globalMemStoreLimit, 0.0f, MemStoreLAB.POOL_INITIAL_SIZE_DEFAULT, |
| null, MemStoreLAB.INDEX_CHUNK_SIZE_PERCENTAGE_DEFAULT); |
| } |
| |
| /** |
| * Test a bunch of random allocations |
| */ |
| @Test |
| public void testLABRandomAllocation() { |
| Random rand = new Random(); |
| MemStoreLAB mslab = new MemStoreLABImpl(); |
| int expectedOff = 0; |
| ByteBuffer lastBuffer = null; |
| int lastChunkId = -1; |
| // 100K iterations by 0-1K alloc -> 50MB expected |
| // should be reasonable for unit test and also cover wraparound |
| // behavior |
| for (int i = 0; i < 100000; i++) { |
| int valSize = rand.nextInt(1000); |
| KeyValue kv = new KeyValue(rk, cf, q, new byte[valSize]); |
| int size = kv.getSerializedSize(); |
| ByteBufferKeyValue newKv = (ByteBufferKeyValue) mslab.copyCellInto(kv); |
| if (newKv.getBuffer() != lastBuffer) { |
| // since we add the chunkID at the 0th offset of the chunk and the |
| // chunkid is an int we need to account for those 4 bytes |
| expectedOff = Bytes.SIZEOF_INT; |
| lastBuffer = newKv.getBuffer(); |
| int chunkId = newKv.getBuffer().getInt(0); |
| assertTrue("chunkid should be different", chunkId != lastChunkId); |
| lastChunkId = chunkId; |
| } |
| assertEquals(expectedOff, newKv.getOffset()); |
| assertTrue("Allocation overruns buffer", |
| newKv.getOffset() + size <= newKv.getBuffer().capacity()); |
| expectedOff += size; |
| } |
| } |
| |
| /** |
| * Test frequent chunk retirement with chunk pool triggered by lots of threads, making sure |
| * there's no memory leak (HBASE-16195) |
| * @throws Exception if any error occurred |
| */ |
| @Test |
| public void testLABChunkQueueWithMultipleMSLABs() throws Exception { |
| Configuration conf = HBaseConfiguration.create(); |
| MemStoreLABImpl[] mslab = new MemStoreLABImpl[10]; |
| for (int i = 0; i < 10; i++) { |
| mslab[i] = new MemStoreLABImpl(conf); |
| } |
| // launch multiple threads to trigger frequent chunk retirement |
| List<Thread> threads = new ArrayList<>(); |
| // create smaller sized kvs |
| final KeyValue kv = new KeyValue(Bytes.toBytes("r"), Bytes.toBytes("f"), Bytes.toBytes("q"), |
| new byte[0]); |
| for (int i = 0; i < 10; i++) { |
| for (int j = 0; j < 10; j++) { |
| threads.add(getChunkQueueTestThread(mslab[i], "testLABChunkQueue-" + j, kv)); |
| } |
| } |
| for (Thread thread : threads) { |
| thread.start(); |
| } |
| // let it run for some time |
| Thread.sleep(3000); |
| for (Thread thread : threads) { |
| thread.interrupt(); |
| } |
| boolean threadsRunning = true; |
| boolean alive = false; |
| while (threadsRunning) { |
| alive = false; |
| for (Thread thread : threads) { |
| if (thread.isAlive()) { |
| alive = true; |
| break; |
| } |
| } |
| if (!alive) { |
| threadsRunning = false; |
| } |
| } |
| // close the mslab |
| for (int i = 0; i < 10; i++) { |
| mslab[i].close(); |
| } |
| // all of the chunkIds would have been returned back |
| assertTrue("All the chunks must have been cleared", |
| ChunkCreator.instance.numberOfMappedChunks() == 0); |
| } |
| |
| private Thread getChunkQueueTestThread(final MemStoreLABImpl mslab, String threadName, |
| Cell cellToCopyInto) { |
| Thread thread = new Thread() { |
| volatile boolean stopped = false; |
| |
| @Override |
| public void run() { |
| while (!stopped) { |
| // keep triggering chunk retirement |
| mslab.copyCellInto(cellToCopyInto); |
| } |
| } |
| |
| @Override |
| public void interrupt() { |
| this.stopped = true; |
| } |
| }; |
| thread.setName(threadName); |
| thread.setDaemon(true); |
| return thread; |
| } |
| } |