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.junit.Assert.assertArrayEquals;
021import static org.junit.Assert.assertEquals;
022import static org.junit.Assert.assertTrue;
023
024import java.io.IOException;
025import java.util.Optional;
026import java.util.concurrent.ExecutionException;
027import java.util.concurrent.TimeUnit;
028import java.util.concurrent.atomic.AtomicInteger;
029import org.apache.hadoop.hbase.HBaseClassTestRule;
030import org.apache.hadoop.hbase.HBaseTestingUtility;
031import org.apache.hadoop.hbase.TableName;
032import org.apache.hadoop.hbase.coprocessor.ObserverContext;
033import org.apache.hadoop.hbase.coprocessor.RegionCoprocessor;
034import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
035import org.apache.hadoop.hbase.coprocessor.RegionObserver;
036import org.apache.hadoop.hbase.testclassification.ClientTests;
037import org.apache.hadoop.hbase.testclassification.MediumTests;
038import org.apache.hadoop.hbase.util.Bytes;
039import org.apache.hadoop.hbase.util.Threads;
040import org.junit.AfterClass;
041import org.junit.Before;
042import org.junit.BeforeClass;
043import org.junit.ClassRule;
044import org.junit.Rule;
045import org.junit.Test;
046import org.junit.experimental.categories.Category;
047import org.junit.rules.TestName;
048
049import org.apache.hbase.thirdparty.com.google.common.io.Closeables;
050
051@Category({ MediumTests.class, ClientTests.class })
052public class TestAsyncTableNoncedRetry {
053
054  @ClassRule
055  public static final HBaseClassTestRule CLASS_RULE =
056    HBaseClassTestRule.forClass(TestAsyncTableNoncedRetry.class);
057
058  private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
059
060  private static TableName TABLE_NAME = TableName.valueOf("async");
061
062  private static byte[] FAMILY = Bytes.toBytes("cf");
063
064  private static byte[] QUALIFIER = Bytes.toBytes("cq");
065
066  private static byte[] VALUE = Bytes.toBytes("value");
067
068  private static AsyncConnection ASYNC_CONN;
069
070  @Rule
071  public TestName testName = new TestName();
072
073  private byte[] row;
074
075  private static AtomicInteger CALLED = new AtomicInteger();
076
077  private static long SLEEP_TIME = 2000;
078
079  public static final class SleepOnceCP implements RegionObserver, RegionCoprocessor {
080
081    @Override
082    public Optional<RegionObserver> getRegionObserver() {
083      return Optional.of(this);
084    }
085
086    @Override
087    public Result postAppend(ObserverContext<RegionCoprocessorEnvironment> c, Append append,
088        Result result) throws IOException {
089      if (CALLED.getAndIncrement() == 0) {
090        Threads.sleepWithoutInterrupt(SLEEP_TIME);
091      }
092      return RegionObserver.super.postAppend(c, append, result);
093    }
094
095    @Override
096    public Result postIncrement(ObserverContext<RegionCoprocessorEnvironment> c,
097        Increment increment, Result result) throws IOException {
098      if (CALLED.getAndIncrement() == 0) {
099        Threads.sleepWithoutInterrupt(SLEEP_TIME);
100      }
101      return RegionObserver.super.postIncrement(c, increment, result);
102    }
103  }
104
105  @BeforeClass
106  public static void setUpBeforeClass() throws Exception {
107    TEST_UTIL.startMiniCluster(1);
108    TEST_UTIL.getAdmin()
109      .createTable(TableDescriptorBuilder.newBuilder(TABLE_NAME)
110        .setColumnFamily(ColumnFamilyDescriptorBuilder.of(FAMILY))
111        .setCoprocessor(SleepOnceCP.class.getName()).build());
112    TEST_UTIL.waitTableAvailable(TABLE_NAME);
113    ASYNC_CONN = ConnectionFactory.createAsyncConnection(TEST_UTIL.getConfiguration()).get();
114  }
115
116  @AfterClass
117  public static void tearDownAfterClass() throws Exception {
118    Closeables.close(ASYNC_CONN, true);
119    TEST_UTIL.shutdownMiniCluster();
120  }
121
122  @Before
123  public void setUp() throws IOException, InterruptedException {
124    row = Bytes.toBytes(testName.getMethodName().replaceAll("[^0-9A-Za-z]", "_"));
125    CALLED.set(0);
126  }
127
128  @Test
129  public void testAppend() throws InterruptedException, ExecutionException {
130    assertEquals(0, CALLED.get());
131    AsyncTable<?> table = ASYNC_CONN.getTableBuilder(TABLE_NAME)
132      .setRpcTimeout(SLEEP_TIME / 2, TimeUnit.MILLISECONDS).build();
133    Result result = table.append(new Append(row).addColumn(FAMILY, QUALIFIER, VALUE)).get();
134    // make sure we called twice and the result is still correct
135    assertEquals(2, CALLED.get());
136    assertArrayEquals(VALUE, result.getValue(FAMILY, QUALIFIER));
137  }
138
139  @Test
140  public void testAppendWhenReturnResultsEqualsFalse() throws InterruptedException,
141    ExecutionException {
142    assertEquals(0, CALLED.get());
143    AsyncTable<?> table = ASYNC_CONN.getTableBuilder(TABLE_NAME)
144      .setRpcTimeout(SLEEP_TIME / 2, TimeUnit.MILLISECONDS).build();
145    Result result = table.append(new Append(row).addColumn(FAMILY, QUALIFIER, VALUE)
146      .setReturnResults(false)).get();
147    // make sure we called twice and the result is still correct
148    assertEquals(2, CALLED.get());
149    assertTrue(result.isEmpty());
150  }
151
152  @Test
153  public void testIncrement() throws InterruptedException, ExecutionException {
154    assertEquals(0, CALLED.get());
155    AsyncTable<?> table = ASYNC_CONN.getTableBuilder(TABLE_NAME)
156      .setRpcTimeout(SLEEP_TIME / 2, TimeUnit.MILLISECONDS).build();
157    assertEquals(1L, table.incrementColumnValue(row, FAMILY, QUALIFIER, 1L).get().longValue());
158    // make sure we called twice and the result is still correct
159    assertEquals(2, CALLED.get());
160  }
161
162  @Test
163  public void testIncrementWhenReturnResultsEqualsFalse() throws InterruptedException,
164    ExecutionException {
165    assertEquals(0, CALLED.get());
166    AsyncTable<?> table = ASYNC_CONN.getTableBuilder(TABLE_NAME)
167      .setRpcTimeout(SLEEP_TIME / 2, TimeUnit.MILLISECONDS).build();
168    Result result = table.increment(new Increment(row).addColumn(FAMILY, QUALIFIER, 1L)
169      .setReturnResults(false)).get();
170    // make sure we called twice and the result is still correct
171    assertEquals(2, CALLED.get());
172    assertTrue(result.isEmpty());
173  }
174}