org.apache.hadoop.mapreduce.lib.input.CombineFileRecordReader Java Examples

The following examples show how to use org.apache.hadoop.mapreduce.lib.input.CombineFileRecordReader. 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: CombinedAvroKeyInputFormat.java    From datafu with Apache License 2.0 5 votes vote down vote up 
@SuppressWarnings("unchecked")
@Override
public RecordReader<AvroKey<T>, NullWritable> createRecordReader(InputSplit inputSplit,
                                                                 TaskAttemptContext context) throws IOException
{
  Schema readerSchema = AvroJob.getInputKeySchema(context.getConfiguration());
  if (null == readerSchema) {
    LOG.warn("Reader schema was not set. Use AvroJob.setInputKeySchema() if desired.");
    LOG.info("Using a reader schema equal to the writer schema.");
  }
      
  Object c = CombinedAvroKeyRecordReader.class;
  return new CombineFileRecordReader<AvroKey<T>, NullWritable>((CombineFileSplit) inputSplit, context, (Class<? extends RecordReader<AvroKey<T>, NullWritable>>)c);
}
Example #2
Source File: CombineAvroKeyInputFormat.java    From incubator-pinot with Apache License 2.0 5 votes vote down vote up 
@Override
public RecordReader<AvroKey<T>, NullWritable> createRecordReader(InputSplit split, TaskAttemptContext context)
    throws IOException {
  Class cls = AvroKeyRecordReaderWrapper.class;

  return new CombineFileRecordReader<>((CombineFileSplit) split, context,
      (Class<? extends RecordReader<AvroKey<T>, NullWritable>>) cls);
}
Example #3
Source File: TextSequenceFileCombinerFormat.java    From datawave with Apache License 2.0 4 votes vote down vote up 
@Override
public RecordReader<Text,Counters> createRecordReader(InputSplit split, TaskAttemptContext context) throws IOException {
    return new CombineFileRecordReader<>((CombineFileSplit) split, context, TextRecordReader.class);
}
Example #4
Source File: NullWritableSequenceFileCombinerFormat.java    From datawave with Apache License 2.0 4 votes vote down vote up 
@Override
public RecordReader<NullWritable,Counters> createRecordReader(InputSplit split, TaskAttemptContext context) throws IOException {
    return new CombineFileRecordReader<>((CombineFileSplit) split, context, NullRecordReader.class);
}
Example #5
Source File: MDSCombineSpreadInputFormat.java    From multiple-dimension-spread with Apache License 2.0 4 votes vote down vote up 
@Override
public RecordReader<NullWritable,Spread> createRecordReader( final InputSplit split , final TaskAttemptContext context)throws IOException{
  return new CombineFileRecordReader<NullWritable,Spread>( (CombineFileSplit)split , context , MDSCombineSpreadReader.class );
}
Example #6
Source File: MultiFileWordCount.java    From hadoop with Apache License 2.0 4 votes vote down vote up 
public RecordReader<WordOffset,Text> createRecordReader(InputSplit split,
    TaskAttemptContext context) throws IOException {
  return new CombineFileRecordReader<WordOffset, Text>(
    (CombineFileSplit)split, context, CombineFileLineRecordReader.class);
}
Example #7
Source File: MultiFileWordCount.java    From big-c with Apache License 2.0 4 votes vote down vote up 
public RecordReader<WordOffset,Text> createRecordReader(InputSplit split,
    TaskAttemptContext context) throws IOException {
  return new CombineFileRecordReader<WordOffset, Text>(
    (CombineFileSplit)split, context, CombineFileLineRecordReader.class);
}
Example #8
Source File: OrcValueCombineFileInputFormat.java    From incubator-gobblin with Apache License 2.0 4 votes vote down vote up 
@Override
public RecordReader<NullWritable, OrcValue> createRecordReader(InputSplit split, TaskAttemptContext context)
    throws IOException {
  return new CombineFileRecordReader((CombineFileSplit) split, context, OrcValueCombineFileRecordReader.class);
}
Example #9
Source File: AvroKeyRecursiveCombineFileInputFormat.java    From incubator-gobblin with Apache License 2.0 4 votes vote down vote up 
@Override
public RecordReader<AvroKey<GenericRecord>, NullWritable> createRecordReader(InputSplit split, TaskAttemptContext cx)
    throws IOException {
  return new CombineFileRecordReader<>((CombineFileSplit) split, cx, AvroKeyCombineFileRecordReader.class);
}
Example #10
Source File: CsvBlurDriver.java    From incubator-retired-blur with Apache License 2.0 4 votes vote down vote up 
@Override
public RecordReader<Writable, Text> createRecordReader(InputSplit split, TaskAttemptContext context)
    throws IOException {
  return new CombineFileRecordReader<Writable, Text>((CombineFileSplit) split, context,
      SequenceFileRecordReaderWrapper.class);
}