public static DeleteFile createEqualityDeleteFile(Table table, String deleteFilePath, List<String> equalityFields,
      FileFormat fileFormat, List<Record> rowsToDelete) throws IOException {
    List<Integer> equalityFieldIds = equalityFields.stream()
        .map(id -> table.schema().findField(id).fieldId())
        .collect(Collectors.toList());
    Schema eqDeleteRowSchema = table.schema().select(equalityFields.toArray(new String[]{}));

    FileAppenderFactory<Record> appenderFactory = new GenericAppenderFactory(table.schema(), table.spec(),
        ArrayUtil.toIntArray(equalityFieldIds), eqDeleteRowSchema, null);
    EncryptedOutputFile outputFile = table.encryption().encrypt(HadoopOutputFile.fromPath(
        new org.apache.hadoop.fs.Path(table.location(), deleteFilePath), new Configuration()));

    PartitionKey part = new PartitionKey(table.spec(), eqDeleteRowSchema);
    part.partition(rowsToDelete.get(0));
    EqualityDeleteWriter<Record> eqWriter = appenderFactory.newEqDeleteWriter(outputFile, fileFormat, part);
    try (EqualityDeleteWriter<Record> writer = eqWriter) {
      writer.write(rowsToDelete);
    }
    return eqWriter.toDeleteFile();
  }
@param table The table to create the delete file for
@param deleteFilePath The path where the delete file should be created, relative to the table location root
@param equalityFields List of field names that should play a role in the equality check
@param fileFormat The file format that should be used for writing out the delete file
@param rowsToDelete The rows that should be deleted. It's enough to fill out the fields that are relevant for the
                    equality check, as listed in equalityFields, the rest of the fields are ignored
@return The DeleteFile created
@throws IOException If there is an error during DeleteFile write
iceberg/iceberg-handler/src/test/java/org/apache/iceberg/mr/hive/HiveIcebergTestUtils.java