Java Code Examples for org.apache.hadoop.mapreduce.OutputCommitter#commitTask()

The following examples show how to use org.apache.hadoop.mapreduce.OutputCommitter#commitTask() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: TestRecovery.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
private void writeBadOutput(TaskAttempt attempt, Configuration conf)
  throws Exception {
  TaskAttemptContext tContext = new TaskAttemptContextImpl(conf, 
      TypeConverter.fromYarn(attempt.getID()));
 
  TextOutputFormat<?, ?> theOutputFormat = new TextOutputFormat();
  RecordWriter theRecordWriter = theOutputFormat
      .getRecordWriter(tContext);
  
  NullWritable nullWritable = NullWritable.get();
  try {
    theRecordWriter.write(key2, val2);
    theRecordWriter.write(null, nullWritable);
    theRecordWriter.write(null, val2);
    theRecordWriter.write(nullWritable, val1);
    theRecordWriter.write(key1, nullWritable);
    theRecordWriter.write(key2, null);
    theRecordWriter.write(null, null);
    theRecordWriter.write(key1, val1);
  } finally {
    theRecordWriter.close(tContext);
  }
  
  OutputFormat outputFormat = ReflectionUtils.newInstance(
      tContext.getOutputFormatClass(), conf);
  OutputCommitter committer = outputFormat.getOutputCommitter(tContext);
  committer.commitTask(tContext);
}
Example 2
Source File: TestRecovery.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
private void writeOutput(TaskAttempt attempt, Configuration conf)
  throws Exception {
  TaskAttemptContext tContext = new TaskAttemptContextImpl(conf, 
      TypeConverter.fromYarn(attempt.getID()));
  
  TextOutputFormat<?, ?> theOutputFormat = new TextOutputFormat();
  RecordWriter theRecordWriter = theOutputFormat
      .getRecordWriter(tContext);
  
  NullWritable nullWritable = NullWritable.get();
  try {
    theRecordWriter.write(key1, val1);
    theRecordWriter.write(null, nullWritable);
    theRecordWriter.write(null, val1);
    theRecordWriter.write(nullWritable, val2);
    theRecordWriter.write(key2, nullWritable);
    theRecordWriter.write(key1, null);
    theRecordWriter.write(null, null);
    theRecordWriter.write(key2, val2);
  } finally {
    theRecordWriter.close(tContext);
  }
  
  OutputFormat outputFormat = ReflectionUtils.newInstance(
      tContext.getOutputFormatClass(), conf);
  OutputCommitter committer = outputFormat.getOutputCommitter(tContext);
  committer.commitTask(tContext);
}
Example 3
Source File: TestRecovery.java    From big-c with Apache License 2.0 5 votes vote down vote up 
private void writeBadOutput(TaskAttempt attempt, Configuration conf)
  throws Exception {
  TaskAttemptContext tContext = new TaskAttemptContextImpl(conf, 
      TypeConverter.fromYarn(attempt.getID()));
 
  TextOutputFormat<?, ?> theOutputFormat = new TextOutputFormat();
  RecordWriter theRecordWriter = theOutputFormat
      .getRecordWriter(tContext);
  
  NullWritable nullWritable = NullWritable.get();
  try {
    theRecordWriter.write(key2, val2);
    theRecordWriter.write(null, nullWritable);
    theRecordWriter.write(null, val2);
    theRecordWriter.write(nullWritable, val1);
    theRecordWriter.write(key1, nullWritable);
    theRecordWriter.write(key2, null);
    theRecordWriter.write(null, null);
    theRecordWriter.write(key1, val1);
  } finally {
    theRecordWriter.close(tContext);
  }
  
  OutputFormat outputFormat = ReflectionUtils.newInstance(
      tContext.getOutputFormatClass(), conf);
  OutputCommitter committer = outputFormat.getOutputCommitter(tContext);
  committer.commitTask(tContext);
}
Example 4
Source File: TestRecovery.java    From big-c with Apache License 2.0 5 votes vote down vote up 
private void writeOutput(TaskAttempt attempt, Configuration conf)
  throws Exception {
  TaskAttemptContext tContext = new TaskAttemptContextImpl(conf, 
      TypeConverter.fromYarn(attempt.getID()));
  
  TextOutputFormat<?, ?> theOutputFormat = new TextOutputFormat();
  RecordWriter theRecordWriter = theOutputFormat
      .getRecordWriter(tContext);
  
  NullWritable nullWritable = NullWritable.get();
  try {
    theRecordWriter.write(key1, val1);
    theRecordWriter.write(null, nullWritable);
    theRecordWriter.write(null, val1);
    theRecordWriter.write(nullWritable, val2);
    theRecordWriter.write(key2, nullWritable);
    theRecordWriter.write(key1, null);
    theRecordWriter.write(null, null);
    theRecordWriter.write(key2, val2);
  } finally {
    theRecordWriter.close(tContext);
  }
  
  OutputFormat outputFormat = ReflectionUtils.newInstance(
      tContext.getOutputFormatClass(), conf);
  OutputCommitter committer = outputFormat.getOutputCommitter(tContext);
  committer.commitTask(tContext);
}
Example 5
Source File: TestMRSequenceFileAsBinaryOutputFormat.java    From hadoop with Apache License 2.0 4 votes vote down vote up 
public void testBinary() throws IOException, InterruptedException {
  Configuration conf = new Configuration();
  Job job = Job.getInstance(conf);
  
  Path outdir = new Path(System.getProperty("test.build.data", "/tmp"),
                  "outseq");
  Random r = new Random();
  long seed = r.nextLong();
  r.setSeed(seed);

  FileOutputFormat.setOutputPath(job, outdir);

  SequenceFileAsBinaryOutputFormat.setSequenceFileOutputKeyClass(job, 
                                        IntWritable.class );
  SequenceFileAsBinaryOutputFormat.setSequenceFileOutputValueClass(job, 
                                        DoubleWritable.class ); 

  SequenceFileAsBinaryOutputFormat.setCompressOutput(job, true);
  SequenceFileAsBinaryOutputFormat.setOutputCompressionType(job, 
                                                     CompressionType.BLOCK);

  BytesWritable bkey = new BytesWritable();
  BytesWritable bval = new BytesWritable();

  TaskAttemptContext context = 
    MapReduceTestUtil.createDummyMapTaskAttemptContext(job.getConfiguration());
  OutputFormat<BytesWritable, BytesWritable> outputFormat = 
    new SequenceFileAsBinaryOutputFormat();
  OutputCommitter committer = outputFormat.getOutputCommitter(context);
  committer.setupJob(job);
  RecordWriter<BytesWritable, BytesWritable> writer = outputFormat.
    getRecordWriter(context);

  IntWritable iwritable = new IntWritable();
  DoubleWritable dwritable = new DoubleWritable();
  DataOutputBuffer outbuf = new DataOutputBuffer();
  LOG.info("Creating data by SequenceFileAsBinaryOutputFormat");
  try {
    for (int i = 0; i < RECORDS; ++i) {
      iwritable = new IntWritable(r.nextInt());
      iwritable.write(outbuf);
      bkey.set(outbuf.getData(), 0, outbuf.getLength());
      outbuf.reset();
      dwritable = new DoubleWritable(r.nextDouble());
      dwritable.write(outbuf);
      bval.set(outbuf.getData(), 0, outbuf.getLength());
      outbuf.reset();
      writer.write(bkey, bval);
    }
  } finally {
    writer.close(context);
  }
  committer.commitTask(context);
  committer.commitJob(job);

  InputFormat<IntWritable, DoubleWritable> iformat =
    new SequenceFileInputFormat<IntWritable, DoubleWritable>();
  int count = 0;
  r.setSeed(seed);
  SequenceFileInputFormat.setInputPaths(job, outdir);
  LOG.info("Reading data by SequenceFileInputFormat");
  for (InputSplit split : iformat.getSplits(job)) {
    RecordReader<IntWritable, DoubleWritable> reader =
      iformat.createRecordReader(split, context);
    MapContext<IntWritable, DoubleWritable, BytesWritable, BytesWritable> 
      mcontext = new MapContextImpl<IntWritable, DoubleWritable,
        BytesWritable, BytesWritable>(job.getConfiguration(), 
        context.getTaskAttemptID(), reader, null, null, 
        MapReduceTestUtil.createDummyReporter(), 
        split);
    reader.initialize(split, mcontext);
    try {
      int sourceInt;
      double sourceDouble;
      while (reader.nextKeyValue()) {
        sourceInt = r.nextInt();
        sourceDouble = r.nextDouble();
        iwritable = reader.getCurrentKey();
        dwritable = reader.getCurrentValue();
        assertEquals(
            "Keys don't match: " + "*" + iwritable.get() + ":" + 
                                         sourceInt + "*",
            sourceInt, iwritable.get());
        assertTrue(
            "Vals don't match: " + "*" + dwritable.get() + ":" +
                                         sourceDouble + "*",
            Double.compare(dwritable.get(), sourceDouble) == 0 );
        ++count;
      }
    } finally {
      reader.close();
    }
  }
  assertEquals("Some records not found", RECORDS, count);
}
Example 6
Source File: TestMRSequenceFileAsBinaryOutputFormat.java    From big-c with Apache License 2.0 4 votes vote down vote up 
public void testBinary() throws IOException, InterruptedException {
  Configuration conf = new Configuration();
  Job job = Job.getInstance(conf);
  
  Path outdir = new Path(System.getProperty("test.build.data", "/tmp"),
                  "outseq");
  Random r = new Random();
  long seed = r.nextLong();
  r.setSeed(seed);

  FileOutputFormat.setOutputPath(job, outdir);

  SequenceFileAsBinaryOutputFormat.setSequenceFileOutputKeyClass(job, 
                                        IntWritable.class );
  SequenceFileAsBinaryOutputFormat.setSequenceFileOutputValueClass(job, 
                                        DoubleWritable.class ); 

  SequenceFileAsBinaryOutputFormat.setCompressOutput(job, true);
  SequenceFileAsBinaryOutputFormat.setOutputCompressionType(job, 
                                                     CompressionType.BLOCK);

  BytesWritable bkey = new BytesWritable();
  BytesWritable bval = new BytesWritable();

  TaskAttemptContext context = 
    MapReduceTestUtil.createDummyMapTaskAttemptContext(job.getConfiguration());
  OutputFormat<BytesWritable, BytesWritable> outputFormat = 
    new SequenceFileAsBinaryOutputFormat();
  OutputCommitter committer = outputFormat.getOutputCommitter(context);
  committer.setupJob(job);
  RecordWriter<BytesWritable, BytesWritable> writer = outputFormat.
    getRecordWriter(context);

  IntWritable iwritable = new IntWritable();
  DoubleWritable dwritable = new DoubleWritable();
  DataOutputBuffer outbuf = new DataOutputBuffer();
  LOG.info("Creating data by SequenceFileAsBinaryOutputFormat");
  try {
    for (int i = 0; i < RECORDS; ++i) {
      iwritable = new IntWritable(r.nextInt());
      iwritable.write(outbuf);
      bkey.set(outbuf.getData(), 0, outbuf.getLength());
      outbuf.reset();
      dwritable = new DoubleWritable(r.nextDouble());
      dwritable.write(outbuf);
      bval.set(outbuf.getData(), 0, outbuf.getLength());
      outbuf.reset();
      writer.write(bkey, bval);
    }
  } finally {
    writer.close(context);
  }
  committer.commitTask(context);
  committer.commitJob(job);

  InputFormat<IntWritable, DoubleWritable> iformat =
    new SequenceFileInputFormat<IntWritable, DoubleWritable>();
  int count = 0;
  r.setSeed(seed);
  SequenceFileInputFormat.setInputPaths(job, outdir);
  LOG.info("Reading data by SequenceFileInputFormat");
  for (InputSplit split : iformat.getSplits(job)) {
    RecordReader<IntWritable, DoubleWritable> reader =
      iformat.createRecordReader(split, context);
    MapContext<IntWritable, DoubleWritable, BytesWritable, BytesWritable> 
      mcontext = new MapContextImpl<IntWritable, DoubleWritable,
        BytesWritable, BytesWritable>(job.getConfiguration(), 
        context.getTaskAttemptID(), reader, null, null, 
        MapReduceTestUtil.createDummyReporter(), 
        split);
    reader.initialize(split, mcontext);
    try {
      int sourceInt;
      double sourceDouble;
      while (reader.nextKeyValue()) {
        sourceInt = r.nextInt();
        sourceDouble = r.nextDouble();
        iwritable = reader.getCurrentKey();
        dwritable = reader.getCurrentValue();
        assertEquals(
            "Keys don't match: " + "*" + iwritable.get() + ":" + 
                                         sourceInt + "*",
            sourceInt, iwritable.get());
        assertTrue(
            "Vals don't match: " + "*" + dwritable.get() + ":" +
                                         sourceDouble + "*",
            Double.compare(dwritable.get(), sourceDouble) == 0 );
        ++count;
      }
    } finally {
      reader.close();
    }
  }
  assertEquals("Some records not found", RECORDS, count);
}
Example 7
Source File: PerfTest2.java    From parquet-mr with Apache License 2.0 4 votes vote down vote up 
public static void write(String out) throws IOException, ParserException,
    InterruptedException, ExecException {
  {
    StringBuilder schemaString = new StringBuilder("a0: chararray");
    for (int i = 1; i < COLUMN_COUNT; i++) {
      schemaString.append(", a" + i + ": chararray");
    }

    String location = out;
    String schema = schemaString.toString();

    StoreFuncInterface storer = new ParquetStorer();
    Job job = new Job(conf);
    storer.setStoreFuncUDFContextSignature("sig");
    String absPath = storer.relToAbsPathForStoreLocation(location, new Path(new File(".").getAbsoluteFile().toURI()));
    storer.setStoreLocation(absPath, job);
    storer.checkSchema(new ResourceSchema(Utils.getSchemaFromString(schema)));
    @SuppressWarnings("unchecked") // that's how the base class is defined
    OutputFormat<Void, Tuple> outputFormat = storer.getOutputFormat();
    // it's ContextUtil.getConfiguration(job) and not just conf !
    JobContext jobContext = ContextUtil.newJobContext(ContextUtil.getConfiguration(job), new JobID("jt", jobid ++));
    outputFormat.checkOutputSpecs(jobContext);
    if (schema != null) {
      ResourceSchema resourceSchema = new ResourceSchema(Utils.getSchemaFromString(schema));
      storer.checkSchema(resourceSchema);
      if (storer instanceof StoreMetadata) {
        ((StoreMetadata)storer).storeSchema(resourceSchema, absPath, job);
      }
    }
    TaskAttemptContext taskAttemptContext = ContextUtil.newTaskAttemptContext(ContextUtil.getConfiguration(job), new TaskAttemptID("jt", jobid, true, 1, 0));
    RecordWriter<Void, Tuple> recordWriter = outputFormat.getRecordWriter(taskAttemptContext);
    storer.prepareToWrite(recordWriter);

    for (int i = 0; i < ROW_COUNT; i++) {
      Tuple tuple = TupleFactory.getInstance().newTuple(COLUMN_COUNT);
      for (int j = 0; j < COLUMN_COUNT; j++) {
        tuple.set(j, "a" + i + "_" + j);
      }
      storer.putNext(tuple);
    }

    recordWriter.close(taskAttemptContext);
    OutputCommitter outputCommitter = outputFormat.getOutputCommitter(taskAttemptContext);
    outputCommitter.commitTask(taskAttemptContext);
    outputCommitter.commitJob(jobContext);

  }
}
Example 8
Source File: MultiOutputFormat.java    From elasticsearch-hadoop with Apache License 2.0 4 votes vote down vote up 
@Override
public void commitTask(TaskAttemptContext taskContext) throws IOException {
    for (OutputCommitter committer : committers) {
        committer.commitTask(taskContext);
    }
}
Example 9
Source File: MultiOutputFormat.java    From elasticsearch-hadoop with Apache License 2.0 4 votes vote down vote up 
@Override
public void commitTask(org.apache.hadoop.mapred.TaskAttemptContext taskContext) throws IOException {
    for (OutputCommitter committer : committers) {
        committer.commitTask(taskContext);
    }
}