public HiveChar getHiveChar() {
    // Copy string value as-is
    return new HiveChar(value.toString(), -1);
  }
HiveCharWritable.
String values will be padded to full char length.
Character length, comparison, hashCode should ignore trailing spaces.
serde/src/java/org/apache/hadoop/hive/serde2/io/HiveCharWritable.java