For those of us who have tried using Latex, we all know how complicated it can be. Latex is a vitae skill to have in the world of reports and formal writing. It is far more powerful then using a normal text editor! Our very own Douglas Temple is giving a talk on Latex this Wednesday at 6pm in the East End PC Labs. Come along! I’m sure you’ll find it very useful.
- 6pm Mondays in the JCR cafe (near the netsoc room)
Bloomberg are coming in to talk about Hadoop, algorithms for processing extremely large data sets! and it’s OPEN SOURCE!
It should be fun and a must for if you’re interested in distributed systems or big data!
They’ll be dinner provided as well (FREE FOOD!)
Remember 6pm in the Maxwell Theatre on Wednesday 25th March!
Bloomberg, the premier data and analytics provider to the financial world, is working on consolidating a number of its core data systems around distributed commodity platforms. HBase is a natural fit in many ways for time series data, but the absolute performance and tight availability tolerances are more restrictive then the general web case.
Our “medium data” problem of dozens of terabytes of data with high reliability and consistently low latency is an interesting one to consider as the capabilities and maturity of the Hadoop ecosystem continue to expand. In this talk, we’ll detail our experiences in driving towards performance goals on high core modern machines, and which techniques have born fruit, from multiple region servers per machine to synchronized garbage collection to secondary region servers, and offer a glimpse of future development.
Over the course of the last 15 years, distributed denial of service attacks have established themselves both as a massive force for damage to communications and business and as a controversial form of speech. This week’s talk will discuss some of the history of politically motivated denial of service attacks while also describing the Deflect system, an open source DDoS mitigation platform for civil society and political organisations.
We’re happy to have a previous Netsoc member, Hugh (nosmo on IRC), giving this talk. It will be on Thursday 27th November at 6pm in the Maxwell Theatre. We hope you’ll come along to what promises to be an interesting talk!
In preparation of our services server, snark, being shut down tomorrow for the weekend we need to restart our login server, cube. This is to allow our contingency services solution to take effect. We will not need to restart spoon, however.
Moreover to migrate our services we will need to take them offline one-by-one as we transfer them. This means that there will be a small window of downtime for IRC, LDAP (logging in will be affected by this), our main website/wiki/etc., and our mailing lists. This is planned for around 10pm tonight, and we’ll advertise the IRC downtime on IRC in advance.
On Monday, when snark is brought back online there will also be downtime for these same services as we migrate them back onto snark. Again it will probably be around 6-10pm on Monday when this is done. We do not plan on restarting cube on Monday though. However it will be shut down once we get the replacement disk for its degraded RAID (and hopefully this time the replacement won’t be faulty!).
The hard drive that was meant to replace the faulty drive in cube is, frustratingly, faulty! It’s being sent back, and hopefully we’ll have a replacement by the end of this week. Unfortunately this coincides with the downtime of snark (reminder: user websites will be unavailable between Friday 21st and Monday 24th). So once the new disk arrives, and the network in TCHPC is no longer down we will install the new disk.