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Date: Tue, 15 Mar 2011 17:49:45 -0400
Message-ID: <AANLkTinj9LeMDM1fkzZpsEhyPU=R4j+tpF0xP3ja5CZP@mail.gmail.com>
Subject: Re: Is column update column-atomic or row atomic?
From: Edward Capriolo <edlinuxguru@gmail.com>
To: user@cassandra.apache.org
Cc: buddhasystem <potekhin@bnl.gov>, cassandra-user@incubator.apache.org
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On Tue, Mar 15, 2011 at 5:46 PM, buddhasystem <potekhin@bnl.gov> wrote:
> Sorry for the rather primitive question, but it's not clear to me if I need
> to fetch the whole row, add a column as a dictionary entry and re-insert it
> if I want to expand the row by one column. Help will be appreciated.
>
>
> --
> View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Is-column-update-column-atomic-or-row-atomic-tp6174445p6174445.html
> Sent from the cassandra-user@incubator.apache.org mailing list archive at Nabble.com.
>

No. In Cassandra you do not need to read to write. You should try to
avoid it if possible.