How to use

org.apache.parquet.hadoop.mapred.Container

constructor

public RecordReaderWrapper(
  InputSplit oldSplit, JobConf oldJobConf, Reporter reporter)
  throws IOException {
 splitLen = oldSplit.getLength();
 try {
  realReader = new ParquetRecordReader<V>(
    ParquetInputFormat.<V>getReadSupportInstance(oldJobConf),
    ParquetInputFormat.getFilter(oldJobConf));
  if (oldSplit instanceof ParquetInputSplitWrapper) {
   realReader.initialize(((ParquetInputSplitWrapper) oldSplit).realSplit, oldJobConf, reporter);
  } else if (oldSplit instanceof FileSplit) {
   realReader.initialize((FileSplit) oldSplit, oldJobConf, reporter);
  } else {
   throw new IllegalArgumentException(
     "Invalid split (not a FileSplit or ParquetInputSplitWrapper): " + oldSplit);
  }
  // read once to gain access to key and value objects
  if (realReader.nextKeyValue()) {
   firstRecord = true;
   valueContainer = new Container<V>();
   valueContainer.set(realReader.getCurrentValue());
  } else {
   eof = true;
  }
 } catch (InterruptedException e) {
  Thread.interrupted();
  throw new IOException(e);
 }
}

public RecordReaderWrapper(
  InputSplit oldSplit, JobConf oldJobConf, Reporter reporter)
  throws IOException {
 splitLen = oldSplit.getLength();
 try {
  realReader = new ParquetRecordReader<V>(
    ParquetInputFormat.<V>getReadSupportInstance(oldJobConf),
    ParquetInputFormat.getFilter(oldJobConf));
  if (oldSplit instanceof ParquetInputSplitWrapper) {
   realReader.initialize(((ParquetInputSplitWrapper) oldSplit).realSplit, oldJobConf, reporter);
  } else if (oldSplit instanceof FileSplit) {
   realReader.initialize((FileSplit) oldSplit, oldJobConf, reporter);
  } else {
   throw new IllegalArgumentException(
     "Invalid split (not a FileSplit or ParquetInputSplitWrapper): " + oldSplit);
  }
  // read once to gain access to key and value objects
  if (realReader.nextKeyValue()) {
   firstRecord = true;
   valueContainer = new Container<V>();
   valueContainer.set(realReader.getCurrentValue());
  } else {
   eof = true;
  }
 } catch (InterruptedException e) {
  Thread.interrupted();
  throw new IOException(e);
 }
}