@Override
  public RecordReader<Void, T> createRecordReader(InputSplit split, TaskAttemptContext context) {
    return split instanceof IcebergMergeSplit ? new IcebergMergeRecordReader<>() : new IcebergRecordReader<>();
  }
Configures the {@code Job} to use the {@code IcebergInputFormat} and
returns a helper to add further configuration.

@param job the {@code Job} to configure
iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/mapreduce/IcebergInputFormat.java