parquet-hadoop/src/main/java/org/apache/parquet/format/converter/ParquetMetadataConverter.java
static long getOffset(ColumnChunk columnChunk) {
    ColumnMetaData md = columnChunk.getMeta_data();
    long offset = md.getData_page_offset();
    if (md.isSetDictionary_page_offset() && offset > md.getDictionary_page_offset()) {
      offset = md.getDictionary_page_offset();
    }
    return offset;
  }
static long getOffset(ColumnChunk columnChunk) {
    ColumnMetaData md = columnChunk.getMeta_data();
    long offset = md.getData_page_offset();
    if (md.isSetDictionary_page_offset() && offset > md.getDictionary_page_offset()) {
      offset = md.getDictionary_page_offset();
    }
    return offset;
  }
Visible for testing