| /* |
| * 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.master.assignment; |
| |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.hamcrest.Matchers.greaterThanOrEqualTo; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertThrows; |
| import static org.junit.Assert.assertTrue; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.verify; |
| |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicLong; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.client.RegionInfo; |
| import org.apache.hadoop.hbase.client.RegionInfoBuilder; |
| import org.apache.hadoop.hbase.procedure2.ProcedureSuspendedException; |
| import org.apache.hadoop.hbase.procedure2.ProcedureTestingUtility.NoopProcedure; |
| import org.apache.hadoop.hbase.testclassification.MasterTests; |
| import org.apache.hadoop.hbase.testclassification.SmallTests; |
| import org.apache.hadoop.hbase.util.AtomicUtils; |
| import org.apache.hadoop.hbase.util.Threads; |
| import org.junit.Before; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| @Category({ MasterTests.class, SmallTests.class }) |
| public class TestRegionStateNodeLock { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestRegionStateNodeLock.class); |
| |
| private final RegionInfo regionInfo = |
| RegionInfoBuilder.newBuilder(TableName.valueOf("test")).build(); |
| |
| private RegionStateNodeLock lock; |
| |
| @Before |
| public void setUp() { |
| lock = new RegionStateNodeLock(regionInfo); |
| } |
| |
| @Test |
| public void testLockByThread() { |
| assertFalse(lock.isLocked()); |
| assertFalse(lock.isLockedBy(Thread.currentThread())); |
| assertThrows(IllegalMonitorStateException.class, () -> lock.unlock()); |
| lock.lock(); |
| assertTrue(lock.isLocked()); |
| assertTrue(lock.isLockedBy(Thread.currentThread())); |
| assertFalse(lock.isLockedBy(new Object())); |
| // reentrant |
| assertTrue(lock.tryLock()); |
| lock.unlock(); |
| assertTrue(lock.isLocked()); |
| lock.unlock(); |
| assertFalse(lock.isLocked()); |
| } |
| |
| @Test |
| public void testLockByProc() throws ProcedureSuspendedException { |
| NoopProcedure<?> proc = new NoopProcedure<Void>(); |
| assertFalse(lock.isLocked()); |
| assertFalse(lock.isLockedBy(proc)); |
| assertThrows(IllegalMonitorStateException.class, () -> lock.unlock(proc)); |
| // here we do not need wake up |
| lock.lock(proc, null); |
| assertTrue(lock.isLocked()); |
| assertTrue(lock.isLockedBy(proc)); |
| // reentrant |
| assertTrue(lock.tryLock(proc)); |
| lock.unlock(proc); |
| assertTrue(lock.isLocked()); |
| assertTrue(lock.isLockedBy(proc)); |
| lock.unlock(proc); |
| assertFalse(lock.isLocked()); |
| assertFalse(lock.isLockedBy(proc)); |
| } |
| |
| @Test |
| public void testLockProcThenThread() throws ProcedureSuspendedException { |
| NoopProcedure<?> proc = new NoopProcedure<Void>(); |
| assertFalse(lock.isLocked()); |
| lock.lock(proc, null); |
| assertFalse(lock.tryLock()); |
| assertThrows(IllegalMonitorStateException.class, () -> lock.unlock()); |
| long startNs = System.nanoTime(); |
| new Thread(() -> { |
| Threads.sleepWithoutInterrupt(2000); |
| lock.unlock(proc); |
| }).start(); |
| lock.lock(); |
| long costNs = System.nanoTime() - startNs; |
| assertThat(TimeUnit.NANOSECONDS.toMillis(costNs), greaterThanOrEqualTo(1800L)); |
| assertTrue(lock.isLocked()); |
| lock.unlock(); |
| assertFalse(lock.isLocked()); |
| } |
| |
| @Test |
| public void testLockThreadThenProc() throws ProcedureSuspendedException { |
| lock.lock(); |
| NoopProcedure<?> proc = new NoopProcedure<Void>(); |
| Runnable wakeUp = mock(Runnable.class); |
| assertThrows(ProcedureSuspendedException.class, () -> lock.lock(proc, wakeUp)); |
| lock.unlock(); |
| // make sure that we have woken up the procedure, and the lock has been passed |
| verify(wakeUp).run(); |
| assertTrue(lock.isLockedBy(proc)); |
| } |
| |
| @Test |
| public void testLockMultiThread() throws InterruptedException { |
| int nThreads = 10; |
| AtomicLong concurrency = new AtomicLong(0); |
| AtomicLong maxConcurrency = new AtomicLong(0); |
| Thread[] threads = new Thread[nThreads]; |
| for (int i = 0; i < nThreads; i++) { |
| threads[i] = new Thread(() -> { |
| for (int j = 0; j < 1000; j++) { |
| lock.lock(); |
| try { |
| long c = concurrency.incrementAndGet(); |
| AtomicUtils.updateMax(maxConcurrency, c); |
| concurrency.decrementAndGet(); |
| } finally { |
| lock.unlock(); |
| } |
| Threads.sleepWithoutInterrupt(1); |
| } |
| }); |
| } |
| for (Thread t : threads) { |
| t.start(); |
| } |
| for (Thread t : threads) { |
| t.join(); |
| } |
| assertEquals(0, concurrency.get()); |
| assertEquals(1, maxConcurrency.get()); |
| assertFalse(lock.isLocked()); |
| } |
| } |