Apache Hadoop on Mac OS X

For some reasons I started to play with Apache Hadoop (Core): Hadoop is a software platform that lets one easily write and run applications that process vast amounts of data. Here’s what makes Hadoop especially useful: Scalable: Hadoop can reliably store and process petabytes. Economical: It distributes the data and processing across clusters of commonly available computers. These clusters can number into the thousands of nodes. Efficient: By distributing the data, Hadoop can process it in parallel on the nodes where the data is located. This makes it extremely rapid. Reliable: Hadoop automatically maintains multiple copies of data and automatically redeploys computing tasks based on failures. Hadoop implements MapReduce, using theHadoop Distributed File System (HDFS). MapReduce divides applications into many small blocks of work. HDFS creates multiple replicas of data blocks for reliability, placing them on compute nodes around the cluster. MapReduce can then process the data where it is located. Hadoop has been demonstrated on clusters with 2000 nodes. The current design target is 10,000 node clusters. I followed the Quickstart guide and I can confirm that it works on [en:Mac OS X] too, but I managed only to make it run in ā€œstandaloneā€ mode: usefull for first-stage development and debugging. ...

April 20, 2008 Ā· 2 min Ā· 298 words

T.P. #3

2.05 miles ~= 3.3 kms I shall say that South Bank river side is a very nice place: the buildings are practically on the River Thames, and it looks like a very romantic place. There are different nice coffee shops (and some are NOT Starbucks ;) ) around there. Quite surprising that this is my 3rd month in this area and I didn’t yet taken a proper look at it. I will… (I’m just waiting for a proper Spring).

April 19, 2008 Ā· 1 min Ā· 79 words

Lars and the Real Girl

Yesterday, waiting for Morfeus (the God, not the Blue-Pill-Red-Pill Freak) to catch me and bring me to sleep. I had this movie in my beloved iPhone, ā€œLars and the Real Girlā€. It’s pure gold. A movie about a guy, Lars (Ryan Gosling), who has a very strange mental disease, that needs a Girlfriend but is unable to catch-and-kiss the classical Next-Door-Girl (Kelli Garner) that loves him… also if she is aware of his sickness. ...

April 19, 2008 Ā· 2 min Ā· 231 words

Video of the Day

> Title: Bill Gates: the last day at Microsoft. I know that probably this is OLD, but… this is really funny! I have to say that [en:Bill Gates] surprised me for being so ironic about himself, his money and his power! I still don’t like you Bill, but at least you are better than big-fat-idiot-[en:Steve Ballmer].

April 18, 2008 Ā· 1 min Ā· 56 words

How Google works

I was looking for info about [en:MapReduce] and I thought that would have been a good idea to take a look at the Tech Talks published by Google. Here we go. Title: 2007 Seattle Conference on Scalability: MapReduce Used on Large Geographic Data Sets Location: Google Tech Talks June 23, 2007 Speaker: Barry Brumitt, Google Inc. Abstract: MapReduce is a programming model and library designed to simplify distributed processing of huge datasets on large clusters of computers. This is achieved by providing a general mechanism which largely relieves the programmer from having to handle challenging distributed computing problems such as data distribution, process coordination, fault tolerance, and scaling. While working on Google maps, I’ve used MapReduce extensively to process and transform datasets which describe the earth’s geography. In this talk, I’ll introduce MapReduce, demonstrating its broad applicability through example problems ranging from basic data transformation to complex graph processing, all the in the context of geographic data. ...

April 17, 2008 Ā· 1 min Ā· 191 words

Innovation lesson from Pixar

Innovation is one of the major topics that all the Big companies speaks all the time about: how, what, when… Innovation? When the reality is of a little/medium size company, Innovation is easy: you don’t need to convince, motivate, move people. Teams with ā€œInnovation in mindā€ just pop out from the ground… and a good manager just need to feed and support them. But when it comes to big companies, with budgets of millions, with Customers that are even bigger… it’s like trying to move an Elephant using one man and a cord. Mission Impossible. But. There are brave companies. Companies that plays the game smart. And those company lead Innovation. Apple? Yes, please! This article is indirectly about Apple: it’s about Pixar. It’s an interview to the Director of a different great movies in Pixar that brought ā€œInnovation where looked impossibleā€: Phillip Bradley Bird (aka Brad Bird). ...

April 17, 2008 Ā· 2 min Ā· 425 words

New Logo

My iPhone is now more ā€œmineā€ ;) I’ll proudly show you as soon as we meet. What? Ah, yeah. Thanks to PwnageTool from the GREAT DevTeam! Carry on guys! PS Yes, I’ll use it also with my Wind SIM ;)

April 17, 2008 Ā· 1 min Ā· 40 words

T.P. #2

[View Larger Map](http://maps.google.co.uk/maps/ms?ie=UTF8&hl=en&msa=0&ll=51.50631,-0.09888&spn=0.015413,0.041456&t=h&msid=108844976807441536323.00044af089afa7d374d93&source=embed) 2.08 miles IT: Gia’ va meglio! EN: That’s better! ;)

April 15, 2008 Ā· 1 min Ā· 13 words

T.P. #1

[View Larger Map](http://maps.google.co.uk/maps?f=d&hl=en&geocode=11736084718721600798,51.503680,-0.107340%3B7049602886713517757,51.506950,-0.104510%3B14304846754349631592,51.511300,-0.104670%3B120167797972590816,51.503210,-0.106940%3B16891571513991692046,51.502810,-0.108150&saddr=Greet+St+%4051.503680,+-0.107340&daddr=A201%2FBlackfriars+Rd+%4051.506950,+-0.104510+to:A201%2FVictoria+Embankment+%4051.511300,+-0.104670+to:B300%2FThe+Cut+%4051.502810,+-0.108150&mra=pr&mrcr=1&via=1&sll=51.507167,-0.106945&sspn=0.015412,0.041456&ie=UTF8&ll=51.507167,-0.106945&spn=0.015412,0.041456&source=embed) 0.7 miles IT: Che schifo :( EN: I’m rubish :(

April 13, 2008 Ā· 1 min Ā· 13 words

In Italia il crimine paga e potrebbe farti eleggere

Dopo che la Chiesa l’ha ammonito per essersi elevato al rango di ā€œSalvatoreā€, si e’ auto proclamato Papa: potra’ ā€˜si farsi ā€œEncicliche ad Personamā€ per permettere al Papa di rappresentare ufficialmente la reincarnazione di Cristo. […] A beautiful, romantic country of olive-dappled landscapes and cobblestoned piazzas famed for its food, fashion and bella figura, Italy is today a land awash in corruption, economic decay, political ennui, rampant impunity and a fast-declining standard of living. Inflation is among the highest in Western Europe, growth the lowest. Record numbers of people report feeling poorer than ever. […] ...

April 13, 2008 Ā· 3 min Ā· 520 words