Antony is travelling up to Portland for this great event that’s about to start Fri evening and going over the weekend. He’ll be showing other devs and people more about the OQGRAPH engine, and gathering useful feedback.
Open Query is, together with many others (I see Giuseppe, Facebook, Gear6, Google, Infobright, Jeremy Cole, PrimeBase Technologies, Percona, [...]
It was fun doing the MySQL University session on OQGRAPH yesterday. Now also available: slides (PDF) and audio/video recording (FLV download, if anyone can convert to a more open format, that’d be great).
Many configs have thread_stack_size configured explicitly, but that can cause rather bad trouble:
if the stack inside a thread it’s too small, you can get segfault crashes (stack overflow, essentially). Particularly on 64-bit.
if the stack is too large, your system cannot handle as many connections since it all eats RAM.
It’s time to play! A special thanks particularly to Antony Curtis for the excellent smart and actually very speedy coding, and for just being a great guy to work with. If you would like to utilise his ace MySQL knowledge and coding skills, do talk to me!
Right now, we have a source tarball available for [...]
This Thursday (October 22nd, 13:00 UTC), Walter Heck (of Open Query) will present Dual Master Setups With MMM. MMM (Multi-Master Replication Manager for MySQL) is a set of flexible scripts to perform monitoring/failover and management of MySQL master-master replication configurations (with only one node writable at any time). Session slides (PDF).
The toolset also has the [...]
The GRAPH engine allows you to deal with hierarchies and graphs in a purely relational way. So, we can find all children of an item, path from an item to a root node, shortest path between two items, and so on, each with a simple basic query structure using standard SQL grammar.
The engine is implemented [...]
Ref: Google: Computer memory flakier than expected (CNET DeepTech, Stephen Shankland)
Summary: According to tests at Google, it appears that today’s RAM modules have several thousand errors a year, which would be correctable if it weren’t for the fact that most of us aren’t using ECC RAM.
Previous research, such as some data from a 300-computer cluster, [...]
We just had a booboo in one of our internal systems, causing it to not come up properly on reboot. The actual mishap occurred several weeks ago (simple case of human error) and was in itself a valid change so monitoring didn’t raise any concerns. So, as always, it’s interesting and useful to think about [...]
Open Query is pleased to sponsor BarCamp Melbourne, a rocking unconference held at UrbanCamp, Royal Park, Melbourne VIC (Australia). If you’re anywhere nearby this coming weekend (12-13 September 2009), you really really want to be there and participate, learn, and enjoy! Open Query’s own Peter Lieverdink (cafuego) will be there.
Barcamps are run at low cost, [...]
