src/test/mapred/org/apache/hadoop/mapred/TestJobExecutionAsDifferentUser.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.mapred;

import java.io.IOException;

import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.SleepJob;
import org.apache.hadoop.util.ToolRunner;

/**
 * Test a java-based mapred job with LinuxTaskController running the jobs as a
 * user different from the user running the cluster. See
 * {@link ClusterWithLinuxTaskController}
 */
public class TestJobExecutionAsDifferentUser extends
    ClusterWithLinuxTaskController {

  public void testJobExecution()
      throws Exception {
    if (!shouldRun()) {
      return;
    }
    startCluster();
    Path inDir = new Path("input");
    Path outDir = new Path("output");

    RunningJob job;

    // Run a job with zero maps/reduces
    job = UtilsForTests.runJob(getClusterConf(), inDir, outDir, 0, 0);
    job.waitForCompletion();
    assertTrue("Job failed", job.isSuccessful());
    assertOwnerShip(outDir);

    // Run a job with 1 map and zero reduces
    job = UtilsForTests.runJob(getClusterConf(), inDir, outDir, 1, 0);
    job.waitForCompletion();
    assertTrue("Job failed", job.isSuccessful());
    assertOwnerShip(outDir);

    // Run a normal job with maps/reduces
    job = UtilsForTests.runJob(getClusterConf(), inDir, outDir, 1, 1);
    job.waitForCompletion();
    assertTrue("Job failed", job.isSuccessful());
    assertOwnerShip(outDir);

    // Run a job with jvm reuse
    JobConf myConf = getClusterConf();
    myConf.set(JobContext.JVM_NUMTASKS_TORUN, "-1");
    String[] args = { "-m", "6", "-r", "3", "-mt", "1000", "-rt", "1000" };
    assertEquals(0, ToolRunner.run(myConf, new SleepJob(), args));
  }
  
  public void testEnvironment() throws IOException {
    if (!shouldRun()) {
      return;
    }
    startCluster();
    TestMiniMRChildTask childTask = new TestMiniMRChildTask();
    Path inDir = new Path("input1");
    Path outDir = new Path("output1");
    try {
      childTask.runTestTaskEnv(getClusterConf(), inDir, outDir, false);
    } catch (IOException e) {
      fail("IOException thrown while running enviroment test."
          + e.getMessage());
    } finally {
      FileSystem outFs = outDir.getFileSystem(getClusterConf());
      if (outFs.exists(outDir)) {
        assertOwnerShip(outDir);
        outFs.delete(outDir, true);
      } else {
        fail("Output directory does not exist" + outDir.toString());
      }
    }
  }

  /** Ensure that SIGQUIT can be properly sent by the LinuxTaskController
   * if a task times out.
   */
  public void testTimeoutStackTrace() throws Exception {
    if (!shouldRun()) {
      return;
    }

    // Run a job that should timeout and trigger a SIGQUIT.
    startCluster();
    JobConf conf = getClusterConf();
    conf.setInt(JobContext.TASK_TIMEOUT, 10000);
    conf.setInt(Job.COMPLETION_POLL_INTERVAL_KEY, 50);
    SleepJob sleepJob = new SleepJob();
    sleepJob.setConf(conf);
    Job job = sleepJob.createJob(1, 0, 30000, 1, 0, 0);
    job.setMaxMapAttempts(1);
    int prevNumSigQuits = MyLinuxTaskController.attemptedSigQuits;
    job.waitForCompletion(true);
    assertTrue("Did not detect a new SIGQUIT!",
        prevNumSigQuits < MyLinuxTaskController.attemptedSigQuits);
    assertEquals("A SIGQUIT attempt failed!", 0,
        MyLinuxTaskController.failedSigQuits);

  }
}