On Sat, Oct 31, 2009 at 8:02 AM, ChingShen <[email protected]> wrote:
> Hi,
>
> I use the org.apache.hadoop.io.Text object to set its value "測試" in
> chinese text(six bytes in UTF-8 encoding), and when I invoke its
> "getBytes()" method that return the raw bytes (11 bytes), but it's actually
> only six bytes. I knew that object involves the "getLength()" method.
> My question is that the "getBytes()" method why not return actually bytes?
>
> Why should not be:
> public byte[] getBytes() {
> //return bytes
> return Arrays.copyOf(bytes,getLength());
> }
>
>
Simply to avoid the extra copy which slows down performance needlessly for a
lot of use cases. You're always free to do this yourself.
-Todd
