private Timestamp decodeTime(byte[] time) {
    try {
      return new Timestamp(dateFormat.parse(Text.decode(time)).getTime());
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
Input array is used to fill the entire size of the vector row batch
ql/src/test/org/apache/hadoop/hive/ql/exec/vector/expressions/TestVectorTimestampExpressions.java