Examples of org.apache.hadoop.mapreduce.Job.addFileToClassPath()

org.apache.hadoop.mapreduce.Job.addFileToClassPath()
Add an file path to the current set of classpath entries It adds the file to cache as well. Files added with this method will not be unpacked while being added to the classpath. To add archives to classpath, use the {@link #addArchiveToClassPath(Path)}method instead. @param file Path of the file to be added

    try {
      try {
        Location programJarCopy = copyProgramJar();
        try {
          job.setJar(jobJar.toURI().toString());
          job.addFileToClassPath(new Path(programJarCopy.toURI()));


          MapReduceContextConfig contextConfig = new MapReduceContextConfig(job);
          // We start long-running tx to be used by mapreduce job tasks.
          Transaction tx = txClient.startLong();
          try {

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    job.setOutputFormatClass(NullOutputFormat.class);
    FileInputFormat.setInputPaths(job, first);
    // Creates the Job Configuration
    job.addCacheFile(
      new URI(first.toUri().toString() + "#distributed.first.symlink"));
    job.addFileToClassPath(second);
    job.addArchiveToClassPath(third);
    job.addCacheArchive(fourth.toUri());
    job.setMaxMapAttempts(1); // speed up failures


    job.submit();

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    job.setNumReduceTasks(0);
    
    FileOutputFormat.setOutputPath(job,
        new Path(mrCluster.getTestWorkDir().getAbsolutePath(),
        "failmapper-output"));
    job.addFileToClassPath(APP_JAR); // The AppMaster jar itself.
    job.submit();
    String trackingUrl = job.getTrackingURL();
    String jobId = job.getJobID().toString();
    boolean succeeded = job.waitForCompletion(true);
    Assert.assertFalse(succeeded);

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        SleepJob sleepJob = new SleepJob();
        sleepJob.setConf(mrCluster.getConfig());
        Job job = sleepJob.createJob(3, 0, 10000, 1, 0, 0);
        // //Job with reduces
        // Job job = sleepJob.createJob(3, 2, 10000, 1, 10000, 1);
        job.addFileToClassPath(APP_JAR); // The AppMaster jar itself.
        job.submit();
        String trackingUrl = job.getTrackingURL();
        String jobId = job.getJobID().toString();
        job.waitForCompletion(true);
        Assert.assertEquals(JobStatus.State.SUCCEEDED, job.getJobState());

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    // Set the job jar to a new "dummy" jar so we can check that its extracted 
    // properly
    job.setJar(makeJobJarWithLib(TEST_ROOT_DIR.toUri().toString()));
    // Because the job jar is a "dummy" jar, we need to include the jar with
    // DistributedCacheChecker or it won't be able to find it
    job.addFileToClassPath(new Path(
            JarFinder.getJar(DistributedCacheChecker.class)));
    
    job.setMapperClass(DistributedCacheChecker.class);
    job.setOutputFormatClass(NullOutputFormat.class);

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    FileInputFormat.setInputPaths(job, first);
    // Creates the Job Configuration
    job.addCacheFile(
        new URI(first.toUri().toString() + "#distributed.first.symlink"));
    job.addFileToClassPath(second);
    job.addFileToClassPath(APP_JAR); // The AppMaster jar itself.
    job.addArchiveToClassPath(third);
    job.addCacheArchive(fourth.toUri());
    job.setMaxMapAttempts(1); // speed up failures

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    FileInputFormat.setInputPaths(job, first);
    // Creates the Job Configuration
    job.addCacheFile(
        new URI(first.toUri().toString() + "#distributed.first.symlink"));
    job.addFileToClassPath(second);
    job.addFileToClassPath(APP_JAR); // The AppMaster jar itself.
    job.addArchiveToClassPath(third);
    job.addCacheArchive(fourth.toUri());
    job.setMaxMapAttempts(1); // speed up failures


    job.submit();

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    int numReduces = sleepConf.getInt("TestMRJobs.testSleepJob.reduces", 2); // or sleepConf.getConfig().getInt(MRJobConfig.NUM_REDUCES, 2);
   
    // job with 3 maps (10s) and numReduces reduces (5s), 1 "record" each:
    Job job = sleepJob.createJob(3, numReduces, 10000, 1, 5000, 1);


    job.addFileToClassPath(APP_JAR); // The AppMaster jar itself.
    job.setJarByClass(SleepJob.class);
    job.setMaxMapAttempts(1); // speed up failures
    job.submit();
    String trackingUrl = job.getTrackingURL();
    String jobId = job.getJobID().toString();

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    Job job = randomWriterJob.createJob(mrCluster.getConfig());
    Path outputDir =
        new Path(mrCluster.getTestWorkDir().getAbsolutePath(), "random-output");
    FileOutputFormat.setOutputPath(job, outputDir);
    job.setSpeculativeExecution(false);
    job.addFileToClassPath(APP_JAR); // The AppMaster jar itself.
    job.setJarByClass(RandomTextWriterJob.class);
    job.setMaxMapAttempts(1); // speed up failures
    job.submit();
    String trackingUrl = job.getTrackingURL();
    String jobId = job.getJobID().toString();

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