| /** |
| * 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.client; |
| |
| import static org.apache.hadoop.hbase.HConstants.EMPTY_START_ROW; |
| import static org.apache.hadoop.hbase.HConstants.HBASE_CLIENT_META_OPERATION_TIMEOUT; |
| import static org.apache.hadoop.hbase.coprocessor.CoprocessorHost.REGION_COPROCESSOR_CONF_KEY; |
| import static org.hamcrest.CoreMatchers.instanceOf; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.io.IOException; |
| import java.util.Optional; |
| import java.util.concurrent.CompletionException; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicReference; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.HBaseTestingUtility; |
| import org.apache.hadoop.hbase.HRegionLocation; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.TableNotFoundException; |
| import org.apache.hadoop.hbase.coprocessor.ObserverContext; |
| import org.apache.hadoop.hbase.coprocessor.RegionCoprocessor; |
| import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment; |
| import org.apache.hadoop.hbase.coprocessor.RegionObserver; |
| import org.apache.hadoop.hbase.exceptions.TimeoutIOException; |
| import org.apache.hadoop.hbase.security.User; |
| import org.apache.hadoop.hbase.testclassification.ClientTests; |
| import org.apache.hadoop.hbase.testclassification.MediumTests; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.apache.hadoop.hbase.util.Threads; |
| import org.junit.After; |
| import org.junit.AfterClass; |
| import org.junit.BeforeClass; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| import org.apache.hbase.thirdparty.com.google.common.io.Closeables; |
| |
| @Category({ MediumTests.class, ClientTests.class }) |
| public class TestAsyncRegionLocator { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestAsyncRegionLocator.class); |
| |
| private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(); |
| |
| private static TableName TABLE_NAME = TableName.valueOf("async"); |
| |
| private static byte[] FAMILY = Bytes.toBytes("cf"); |
| |
| private static AsyncConnectionImpl CONN; |
| |
| private static AsyncRegionLocator LOCATOR; |
| |
| private static volatile long SLEEP_MS = 0L; |
| |
| public static class SleepRegionObserver implements RegionCoprocessor, RegionObserver { |
| @Override |
| public Optional<RegionObserver> getRegionObserver() { |
| return Optional.of(this); |
| } |
| |
| @Override |
| public void preScannerOpen(ObserverContext<RegionCoprocessorEnvironment> e, Scan scan) |
| throws IOException { |
| if (SLEEP_MS > 0) { |
| Threads.sleepWithoutInterrupt(SLEEP_MS); |
| } |
| } |
| } |
| |
| @BeforeClass |
| public static void setUp() throws Exception { |
| Configuration conf = TEST_UTIL.getConfiguration(); |
| conf.set(REGION_COPROCESSOR_CONF_KEY, SleepRegionObserver.class.getName()); |
| conf.setLong(HBASE_CLIENT_META_OPERATION_TIMEOUT, 2000); |
| TEST_UTIL.startMiniCluster(1); |
| TEST_UTIL.createTable(TABLE_NAME, FAMILY); |
| TEST_UTIL.waitTableAvailable(TABLE_NAME); |
| ConnectionRegistry registry = |
| ConnectionRegistryFactory.getRegistry(TEST_UTIL.getConfiguration()); |
| CONN = new AsyncConnectionImpl(TEST_UTIL.getConfiguration(), registry, |
| registry.getClusterId().get(), null, User.getCurrent()); |
| LOCATOR = CONN.getLocator(); |
| } |
| |
| @AfterClass |
| public static void tearDown() throws Exception { |
| Closeables.close(CONN, true); |
| TEST_UTIL.shutdownMiniCluster(); |
| } |
| |
| @After |
| public void tearDownAfterTest() { |
| LOCATOR.clearCache(); |
| } |
| |
| @Test |
| public void testTimeout() throws InterruptedException, ExecutionException { |
| SLEEP_MS = 1000; |
| long startNs = System.nanoTime(); |
| try { |
| LOCATOR.getRegionLocation(TABLE_NAME, EMPTY_START_ROW, RegionLocateType.CURRENT, |
| TimeUnit.MILLISECONDS.toNanos(500)).get(); |
| fail(); |
| } catch (ExecutionException e) { |
| assertThat(e.getCause(), instanceOf(TimeoutIOException.class)); |
| } |
| long costMs = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startNs); |
| assertTrue(costMs >= 500); |
| assertTrue(costMs < 1000); |
| // wait for the background task finish |
| Thread.sleep(2000); |
| // Now the location should be in cache, so we will not visit meta again. |
| HRegionLocation loc = LOCATOR.getRegionLocation(TABLE_NAME, EMPTY_START_ROW, |
| RegionLocateType.CURRENT, TimeUnit.MILLISECONDS.toNanos(500)).get(); |
| assertEquals(loc.getServerName(), |
| TEST_UTIL.getHBaseCluster().getRegionServer(0).getServerName()); |
| } |
| |
| @Test |
| public void testNoCompletionException() { |
| // make sure that we do not get CompletionException |
| SLEEP_MS = 0; |
| AtomicReference<Throwable> errorHolder = new AtomicReference<>(); |
| try { |
| LOCATOR.getRegionLocation(TableName.valueOf("NotExist"), EMPTY_START_ROW, |
| RegionLocateType.CURRENT, TimeUnit.SECONDS.toNanos(1)) |
| .whenComplete((r, e) -> errorHolder.set(e)).join(); |
| fail(); |
| } catch (CompletionException e) { |
| // join will return a CompletionException, which is OK |
| assertThat(e.getCause(), instanceOf(TableNotFoundException.class)); |
| } |
| // but we need to make sure that we do not get a CompletionException in the callback |
| assertThat(errorHolder.get(), instanceOf(TableNotFoundException.class)); |
| } |
| } |