public void setSeparator(int index, byte separator) throws SerDeException {
    if (index < 0 || index >= separators.length) {
      throw new SerDeException("Invalid separator array index value: " + index);
    }

    separators[index] = separator;
  }
Extracts and set column names and column types from the table properties
@throws SerDeException
serde/src/java/org/apache/hadoop/hive/serde2/lazy/LazySerDeParameters.java