branch-2.0.4-alpha/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/test/java/org/apache/hadoop/mapreduce/v2/api/records/TestIds.java

/**
 * 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.mapreduce.v2.api.records;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import org.apache.hadoop.mapreduce.v2.util.MRBuilderUtils;
import org.apache.hadoop.yarn.util.BuilderUtils;
import org.junit.Test;

public class TestIds {

  @Test
  public void testJobId() {
    long ts1 = 1315890136000l;
    long ts2 = 1315890136001l;
    JobId j1 = createJobId(ts1, 2);
    JobId j2 = createJobId(ts1, 1);
    JobId j3 = createJobId(ts2, 1);
    JobId j4 = createJobId(ts1, 2);

    assertTrue(j1.equals(j4));
    assertFalse(j1.equals(j2));
    assertFalse(j1.equals(j3));

    assertTrue(j1.compareTo(j4) == 0);
    assertTrue(j1.compareTo(j2) > 0);
    assertTrue(j1.compareTo(j3) < 0);

    assertTrue(j1.hashCode() == j4.hashCode());
    assertFalse(j1.hashCode() == j2.hashCode());
    assertFalse(j1.hashCode() == j3.hashCode());

    JobId j5 = createJobId(ts1, 231415);
    assertEquals("job_" + ts1 + "_0002", j1.toString());
    assertEquals("job_" + ts1 + "_231415", j5.toString());
  }

  @Test
  public void testTaskId() {
    long ts1 = 1315890136000l;
    long ts2 = 1315890136001l;
    TaskId t1 = createTaskId(ts1, 1, 2, TaskType.MAP);
    TaskId t2 = createTaskId(ts1, 1, 2, TaskType.REDUCE);
    TaskId t3 = createTaskId(ts1, 1, 1, TaskType.MAP);
    TaskId t4 = createTaskId(ts1, 1, 2, TaskType.MAP);
    TaskId t5 = createTaskId(ts2, 1, 1, TaskType.MAP);

    assertTrue(t1.equals(t4));
    assertFalse(t1.equals(t2));
    assertFalse(t1.equals(t3));
    assertFalse(t1.equals(t5));

    assertTrue(t1.compareTo(t4) == 0);
    assertTrue(t1.compareTo(t2) < 0);
    assertTrue(t1.compareTo(t3) > 0);
    assertTrue(t1.compareTo(t5) < 0);

    assertTrue(t1.hashCode() == t4.hashCode());
    assertFalse(t1.hashCode() == t2.hashCode());
    assertFalse(t1.hashCode() == t3.hashCode());
    assertFalse(t1.hashCode() == t5.hashCode());

    TaskId t6 = createTaskId(ts1, 324151, 54643747, TaskType.REDUCE);
    assertEquals("task_" + ts1 + "_0001_m_000002", t1.toString());
    assertEquals("task_" + ts1 + "_324151_r_54643747", t6.toString());
  }

  @Test
  public void testTaskAttemptId() {
    long ts1 = 1315890136000l;
    long ts2 = 1315890136001l;
    TaskAttemptId t1 = createTaskAttemptId(ts1, 2, 2, TaskType.MAP, 2);
    TaskAttemptId t2 = createTaskAttemptId(ts1, 2, 2, TaskType.REDUCE, 2);
    TaskAttemptId t3 = createTaskAttemptId(ts1, 2, 2, TaskType.MAP, 3);
    TaskAttemptId t4 = createTaskAttemptId(ts1, 2, 2, TaskType.MAP, 1);
    TaskAttemptId t5 = createTaskAttemptId(ts1, 2, 1, TaskType.MAP, 3);
    TaskAttemptId t6 = createTaskAttemptId(ts1, 2, 2, TaskType.MAP, 2);

    assertTrue(t1.equals(t6));
    assertFalse(t1.equals(t2));
    assertFalse(t1.equals(t3));
    assertFalse(t1.equals(t5));

    assertTrue(t1.compareTo(t6) == 0);
    assertTrue(t1.compareTo(t2) < 0);
    assertTrue(t1.compareTo(t3) < 0);
    assertTrue(t1.compareTo(t4) > 0);
    assertTrue(t1.compareTo(t5) > 0);

    assertTrue(t1.hashCode() == t6.hashCode());
    assertFalse(t1.hashCode() == t2.hashCode());
    assertFalse(t1.hashCode() == t3.hashCode());
    assertFalse(t1.hashCode() == t5.hashCode());

    TaskAttemptId t7 =
        createTaskAttemptId(ts2, 5463346, 4326575, TaskType.REDUCE, 54375);
    assertEquals("attempt_" + ts1 + "_0002_m_000002_2", t1.toString());
    assertEquals("attempt_" + ts2 + "_5463346_r_4326575_54375", t7.toString());

  }

  private JobId createJobId(long clusterTimestamp, int idInt) {
    return MRBuilderUtils.newJobId(
        BuilderUtils.newApplicationId(clusterTimestamp, idInt), idInt);
  }

  private TaskId createTaskId(long clusterTimestamp, int jobIdInt,
      int taskIdInt, TaskType taskType) {
    return MRBuilderUtils.newTaskId(createJobId(clusterTimestamp, jobIdInt),
        taskIdInt, taskType);
  }

  private TaskAttemptId createTaskAttemptId(long clusterTimestamp,
      int jobIdInt, int taskIdInt, TaskType taskType, int taskAttemptIdInt) {
    return MRBuilderUtils.newTaskAttemptId(
        createTaskId(clusterTimestamp, jobIdInt, taskIdInt, taskType),
        taskAttemptIdInt);
  }
}