private static Modification decodeModification(String src) throws IOException {
    String[] fields = src.split(SEPARATOR);
    if (Modification.Type.DELETION.name().equals(fields[0])) {
      return decodeDeletion(fields);
    }
    throw new IOException("Unknown modification type: " + fields[0]);
  }
Construct a LocalTextModificationAccessor using a file specified by filePath.

@param filePath the path of the file that is used for storing modifications.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/modification/v1/io/LocalTextModificationAccessor.java