parquet.hadoop.api.ReadSupport Java Examples

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Example #1
Source File: PentahoTwitterInputFormat.java    From pentaho-hadoop-shims with Apache License 2.0 6 votes vote down vote up 
@Override
public IPentahoRecordReader createRecordReader( IPentahoInputSplit split ) throws Exception {
  return inClassloader( () -> {
    PentahoInputSplitImpl pentahoInputSplit = (PentahoInputSplitImpl) split;
    InputSplit inputSplit = pentahoInputSplit.getInputSplit();

    ReadSupport<RowMetaAndData> readSupport = new PentahoParquetReadSupport();

    ParquetRecordReader<RowMetaAndData> nativeRecordReader =
      new ParquetRecordReader<>( readSupport, ParquetInputFormat.getFilter( job
        .getConfiguration() ) );
    TaskAttemptContextImpl task = new TaskAttemptContextImpl( job.getConfiguration(), new TaskAttemptID() );
    nativeRecordReader.initialize( inputSplit, task );

    return new PentahoParquetRecordReader( nativeRecordReader );
  } );
}