private String loadParquetFilePath() {
    URL fileUrl = this.getClass().getClassLoader().getResource(PARQUET_FILE_NAME);
    if (fileUrl != null) {
      return fileUrl.getFile();
    } else {
      throw new IllegalStateException("Cannot load parquet file produced by impala");
    }
  }
Impala may write string type column with binary value in parquet file, which is okay for Hive
readers, We need to support it too for mixed-hive format tables.
amoro-format-mixed/amoro-mixed-hive/src/test/java/org/apache/amoro/hive/io/TestImpalaParquet.java