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Posted to user@hbase.apache.org by Claudio Martella <cl...@tis.bz.it> on 2010/12/18 19:11:15 UTC

the semantics of HTable.put()

Hello list,

just two lines for a proposal. Wouldn't it make more sense if put would
return the old value in case the put ends up being an update instead of
an insert?
This would mimic HashMap's behavior and would be very useful. What do
you think?

-- 
Claudio Martella
Digital Technologies
Unit Research & Development - Analyst

TIS innovation park
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39100 Bolzano | 39100 Bozen
Tel. +39 0471 068 123
Fax  +39 0471 068 129
claudio.martella@tis.bz.it http://www.tis.bz.it

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Re: the semantics of HTable.put()

Posted by Ryan Rawson <ry...@gmail.com>.
Unfortunately this would be quite expensive to implement, that data is not
necessarly at hand when doing a put.
On Dec 18, 2010 10:11 AM, "Claudio Martella" <cl...@tis.bz.it>
wrote:
> Hello list,
>
> just two lines for a proposal. Wouldn't it make more sense if put would
> return the old value in case the put ends up being an update instead of
> an insert?
> This would mimic HashMap's behavior and would be very useful. What do
> you think?
>
> --
> Claudio Martella
> Digital Technologies
> Unit Research & Development - Analyst
>
> TIS innovation park
> Via Siemens 19 | Siemensstr. 19
> 39100 Bolzano | 39100 Bozen
> Tel. +39 0471 068 123
> Fax +39 0471 068 129
> claudio.martella@tis.bz.it http://www.tis.bz.it
>
> Short information regarding use of personal data. According to Section 13
of Italian Legislative Decree no. 196 of 30 June 2003, we inform you that we
process your personal data in order to fulfil contractual and fiscal
obligations and also to send you information regarding our services and
events. Your personal data are processed with and without electronic means
and by respecting data subjects' rights, fundamental freedoms and dignity,
particularly with regard to confidentiality, personal identity and the right
to personal data protection. At any time and without formalities you can
write an e-mail to privacy@tis.bz.it in order to object the processing of
your personal data for the purpose of sending advertising materials and also
to exercise the right to access personal data and other rights referred to
in Section 7 of Decree 196/2003. The data controller is TIS Techno
Innovation Alto Adige, Siemens Street n. 19, Bolzano. You can find the
complete information on the web site www.tis.bz.it.
>
>