public static DataFileType parseFileTypeForChange(String path) {
    String fileName = TableFileUtil.getFileName(path);
    Matcher matcher = KEYED_FILE_NAME_PATTERN.matcher(fileName);
    if (matchMixedFileFormat(matcher)) {
      return DataFileType.ofShortName(matcher.group(2));
    } else {
      return DataFileType.INSERT_FILE;
    }
  }
Parse file type for ChangeStore.

@param path - path
@return file type, return INSERT_FILE if is not file format of mixe-format tables.
amoro-format-iceberg/src/main/java/org/apache/amoro/data/FileNameRules.java