cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Ryan King <r...@twitter.com>
Subject Re: No Transactions: An Example
Date Thu, 23 Jun 2011 22:02:49 GMT
On Thu, Jun 23, 2011 at 2:05 PM, Les Hazlewood <les@katasoft.com> wrote:
> Hi Dominic,
> Thanks so much for providing this information.  I was unaware of Cages and
> this looks like it could be used effectively for certain things.
>
>> This is because Cassandra uses the timestamps of columns that have been
>> written during reconciliation to determine which should be persisted when
>> they conflict.
>
> Aren't vector clocks available in 0.8 now? Or more accurately, increment
> counters?
> https://issues.apache.org/jira/browse/CASSANDRA-1072
> This would imply that an artificial delay is no longer necessary.  Or am I
> missing something?

The counters implementation that made it in doesn't use vector clocks.
See https://issues.apache.org/jira/secure/attachment/12459754/Partitionedcountersdesigndoc.pdf

-ryan

Mime
View raw message