Triggers?

2012-01-20 Thread Brian O'Neill 
I just posted to the user list, but figured I would post here as well.

We had a big session today designing application-level triggers using a new
column family as a distributed commit log.
When I got back to my desk, I re-googled Cassandra triggers, and re-read:
https://issues.apache.org/jira/browse/CASSANDRA-1311

We had planned to implement something similar to the "crack smoking"
concept...
Keeping a separate column family that logged the mutation, which a trigger
could then act on and write-back upon success.

Conceptually, this doesn't seem too difficult to implement.  Is anyone
working on this already?
If not, is it worth working it and contributing as a patch?
Or should we just keep it to our app layer?

-brian


-- 
Brian ONeill
Lead Architect, Health Market Science (http://healthmarketscience.com)
mobile:215.588.6024
blog: http://weblogs.java.net/blog/boneill42/
blog: http://brianoneill.blogspot.com/

Re: 1.1 freeze approaching

2012-01-20 Thread Vijay 
+1

Regards,




On Mon, Dec 19, 2011 at 9:56 AM, Jonathan Ellis  wrote:

> Just a reminder that for us to meet our four-month major release
> schedule (i.e., 1.1 = Feb 18), we need to code freeze on Jan 18, which
> is just about a month away on the calendar but significantly closer in
> terms of man-hours as people take holiday vacations.
>
> I've taken a first stab at moving issues to 1.2 that were tagged 1.1
> but I'm pretty sure won't be done in time, with 34 issues remaining in
> 1.1, which is fairly optimistic [1].  Please be aware of the timeline
> if you are working on or reviewing one of these tickets, or if you are
> planning to volunteer for one before the freeze.
>
> [1]
> https://issues.apache.org/jira/secure/IssueNavigator.jspa?reset=true&jqlQuery=project+%3D+CASSANDRA+AND+fixVersion+%3D+%221.1%22+AND+resolution+%3D+Unresolved+ORDER+BY+due+ASC%2C+priority+DESC%2C+created+ASC&mode=hide
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of DataStax, the source for professional Cassandra support
> http://www.datastax.com
>