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.client;
019
020import static org.apache.hadoop.hbase.HConstants.EMPTY_START_ROW;
021import static org.apache.hadoop.hbase.HConstants.HBASE_CLIENT_META_OPERATION_TIMEOUT;
022import static org.apache.hadoop.hbase.coprocessor.CoprocessorHost.REGION_COPROCESSOR_CONF_KEY;
023import static org.hamcrest.CoreMatchers.instanceOf;
024import static org.junit.Assert.assertEquals;
025import static org.junit.Assert.assertThat;
026import static org.junit.Assert.assertTrue;
027import static org.junit.Assert.fail;
028
029import java.io.IOException;
030import java.util.Optional;
031import java.util.concurrent.ExecutionException;
032import java.util.concurrent.TimeUnit;
033import org.apache.commons.io.IOUtils;
034import org.apache.hadoop.conf.Configuration;
035import org.apache.hadoop.hbase.HBaseClassTestRule;
036import org.apache.hadoop.hbase.HBaseTestingUtility;
037import org.apache.hadoop.hbase.HRegionLocation;
038import org.apache.hadoop.hbase.TableName;
039import org.apache.hadoop.hbase.coprocessor.ObserverContext;
040import org.apache.hadoop.hbase.coprocessor.RegionCoprocessor;
041import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
042import org.apache.hadoop.hbase.coprocessor.RegionObserver;
043import org.apache.hadoop.hbase.exceptions.TimeoutIOException;
044import org.apache.hadoop.hbase.security.User;
045import org.apache.hadoop.hbase.testclassification.ClientTests;
046import org.apache.hadoop.hbase.testclassification.MediumTests;
047import org.apache.hadoop.hbase.util.Bytes;
048import org.apache.hadoop.hbase.util.Threads;
049import org.junit.AfterClass;
050import org.junit.BeforeClass;
051import org.junit.ClassRule;
052import org.junit.Test;
053import org.junit.experimental.categories.Category;
054
055@Category({ MediumTests.class, ClientTests.class })
056public class TestAsyncRegionLocatorTimeout {
057
058  @ClassRule
059  public static final HBaseClassTestRule CLASS_RULE =
060      HBaseClassTestRule.forClass(TestAsyncRegionLocatorTimeout.class);
061
062  private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
063
064  private static TableName TABLE_NAME = TableName.valueOf("async");
065
066  private static byte[] FAMILY = Bytes.toBytes("cf");
067
068  private static AsyncConnectionImpl CONN;
069
070  private static AsyncRegionLocator LOCATOR;
071
072  private static volatile long SLEEP_MS = 0L;
073
074  public static class SleepRegionObserver implements RegionCoprocessor, RegionObserver {
075    @Override
076    public Optional<RegionObserver> getRegionObserver() {
077      return Optional.of(this);
078    }
079
080    @Override
081    public void preScannerOpen(ObserverContext<RegionCoprocessorEnvironment> e, Scan scan)
082        throws IOException {
083      if (SLEEP_MS > 0) {
084        Threads.sleepWithoutInterrupt(SLEEP_MS);
085      }
086    }
087  }
088
089  @BeforeClass
090  public static void setUp() throws Exception {
091    Configuration conf = TEST_UTIL.getConfiguration();
092    conf.set(REGION_COPROCESSOR_CONF_KEY, SleepRegionObserver.class.getName());
093    conf.setLong(HBASE_CLIENT_META_OPERATION_TIMEOUT, 2000);
094    TEST_UTIL.startMiniCluster(1);
095    TEST_UTIL.createTable(TABLE_NAME, FAMILY);
096    TEST_UTIL.waitTableAvailable(TABLE_NAME);
097    AsyncRegistry registry = AsyncRegistryFactory.getRegistry(TEST_UTIL.getConfiguration());
098    CONN = new AsyncConnectionImpl(TEST_UTIL.getConfiguration(), registry,
099        registry.getClusterId().get(), User.getCurrent());
100    LOCATOR = CONN.getLocator();
101  }
102
103  @AfterClass
104  public static void tearDown() throws Exception {
105    IOUtils.closeQuietly(CONN);
106    TEST_UTIL.shutdownMiniCluster();
107  }
108
109  @Test
110  public void test() throws InterruptedException, ExecutionException {
111    SLEEP_MS = 1000;
112    long startNs = System.nanoTime();
113    try {
114      LOCATOR.getRegionLocation(TABLE_NAME, EMPTY_START_ROW, RegionLocateType.CURRENT,
115        TimeUnit.MILLISECONDS.toNanos(500)).get();
116      fail();
117    } catch (ExecutionException e) {
118      e.printStackTrace();
119      assertThat(e.getCause(), instanceOf(TimeoutIOException.class));
120    }
121    long costMs = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startNs);
122    assertTrue(costMs >= 500);
123    assertTrue(costMs < 1000);
124    // wait for the background task finish
125    Thread.sleep(2000);
126    // Now the location should be in cache, so we will not visit meta again.
127    HRegionLocation loc = LOCATOR.getRegionLocation(TABLE_NAME, EMPTY_START_ROW,
128      RegionLocateType.CURRENT, TimeUnit.MILLISECONDS.toNanos(500)).get();
129    assertEquals(loc.getServerName(),
130      TEST_UTIL.getHBaseCluster().getRegionServer(0).getServerName());
131  }
132}