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Posted to user@cassandra.apache.org by Avi-h <av...@gmail.com> on 2012/04/03 09:11:28 UTC
Counter Column
I have encountered the following piece of information regarding the use of
‘Counter Column’ in Cassandra: “If a write fails unexpectedly (timeout or
loss of connection to the coordinator node) the client will not know if the
operation has been performed. A retry can result in an over count” (- quoted
from http://wiki.apache.org/cassandra/Counters).
is it still relevant?
--
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Re: Counter Column
Posted by Alain RODRIGUEZ <ar...@gmail.com>.
Sylvain explained a lot of things about counters at Cassandra SF 2011 :
http://blip.tv/datastax/counters-in-cassandra-5497678 (video),
http://www.datastax.com/wp-content/uploads/2011/07/cassandra_sf_counters.pdf(slides).
I think it is always important knowing how the things work.
Alain
2012/4/3 Sylvain Lebresne <sy...@datastax.com>
> Again, it will be relevant until CASSANDRA-2495 is fixed. Until then
> (then being undefined so far), it affects all version that have
> counters (including 1.0.8).
>
> --
> Sylvain
>
> On Tue, Apr 3, 2012 at 12:23 PM, Avi-h <av...@gmail.com> wrote:
> > this bug is for 0.8 beta 1, is it also relevant for 1.0.8?
> >
> >
> > --
> > View this message in context:
> http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Counter-Column-tp7432010p7432450.html
> > Sent from the cassandra-user@incubator.apache.org mailing list archive
> at Nabble.com.
>
Re: Counter Column
Posted by Sylvain Lebresne <sy...@datastax.com>.
Again, it will be relevant until CASSANDRA-2495 is fixed. Until then
(then being undefined so far), it affects all version that have
counters (including 1.0.8).
--
Sylvain
On Tue, Apr 3, 2012 at 12:23 PM, Avi-h <av...@gmail.com> wrote:
> this bug is for 0.8 beta 1, is it also relevant for 1.0.8?
>
>
> --
> View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Counter-Column-tp7432010p7432450.html
> Sent from the cassandra-user@incubator.apache.org mailing list archive at Nabble.com.
RE: Counter Column
Posted by Jeremiah Jordan <JE...@morningstar.com>.
Right, it affects every version of Cassandra from 0.8 beta 1 until the Fix Version, which right now is None, so it isn't fixed yet...
________________________________________
From: Avi-h [avihaim@gmail.com]
Sent: Tuesday, April 03, 2012 5:23 AM
To: cassandra-user@incubator.apache.org
Subject: Re: Counter Column
this bug is for 0.8 beta 1, is it also relevant for 1.0.8?
--
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Re: Counter Column
Posted by Avi-h <av...@gmail.com>.
this bug is for 0.8 beta 1, is it also relevant for 1.0.8?
--
View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Counter-Column-tp7432010p7432450.html
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Re: Counter Column
Posted by Sylvain Lebresne <sy...@datastax.com>.
On Tue, Apr 3, 2012 at 9:11 AM, Avi-h <av...@gmail.com> wrote:
> I have encountered the following piece of information regarding the use of
> ‘Counter Column’ in Cassandra: “If a write fails unexpectedly (timeout or
> loss of connection to the coordinator node) the client will not know if the
> operation has been performed. A retry can result in an over count” (- quoted
> from http://wiki.apache.org/cassandra/Counters).
>
> is it still relevant?
It is (there is an open ticket to fix,
https://issues.apache.org/jira/browse/CASSANDRA-2495, but to be honest
we don't really have a good solution to fix it so far).
--
Sylvain