Monthly Archives: October 2013

Hadoop, Pivotal HD and HAWQ, some stolen paragraphs

HAWQ is a native, mature and fast SQL Query Engine for Hadoop.

HAWQ enables existing SQL skillsets on Hadoop with benefits.

  • Parallel Query Optimizer
  • Dynamic Pipelining
  • Pivotal Extension Frameworks
  • Advanced Analytics Functions

Read the full article 
http://www.gopivotal.com/pivotal-products/data/pivotal-hd#4

More stolen paragraphs (paragraphs, images and diagrams)!!

Continue reading Hadoop, Pivotal HD and HAWQ, some stolen paragraphs

Video presentation of Hadoop, by Doug Cutting

A nice video presentation of what Hadoop is, by Doug Cutting, the father of Hadoop.

http://www.cloudera.com/content/cloudera/en/resources/library/aboutcloudera/beyond-batch-the-evolution-of-the-hadoop-ecosystem-doug-cutting-video.html

Description

Apache Hadoop started as batch: simple, powerful, efficient, scalable, and a shared platform. However, Hadoop is more than that. It’s true strengths are:

  • Scalability – it’s affordable due to it being open-source and its use of commodity hardware for reliable distribution.

  • Schema on read – you can afford to save everything in raw form.

  • Data is better than algorithms – More data and a simple algorithm can be much more meaningful than less data and a complex algorithm.

 

Hadoop on Amazon and AirBnB

 

First, it uses Hadoop to support its associates program, in which affiliates post links to Amazon-based products on their websites and get a percentage of related revenue. Originally, Rauser explained, Amazon developers wrote three separate applications in C++ to process and analyze data associated with these transactions to determine how much to pay each affiliate. But the system quickly began to run up against scaling issues, particularly every fourth quarter (typically the busiest quarter of the year for Amazon.) Continue reading Hadoop on Amazon and AirBnB

AjaXplorer aka pydio another dropbox ‘clone’

Pydio allows you to instantly turn any server into a powerful file sharing platform. Formerly known as AjaXplorer (550 000 downloads in Sept.2013), we are now rebranding and this website is dedicated to the community support.

Gain back control and privacy on your data, reduce your costs, and empower your users with Pydio consumer-grade simplicity allied to enterprise-grade compliance. Pydio deploys on top of your legacy filesystems and instantly connects to your existings users directories. Its plugin-oriented architecture makes it ready for all situations.

Pydio (aka. ajaXplorer) is a powerful, open source, web-based file sync tool.
Jack Wallen, Tech Republic

Red Hat Storage + Pydio 5: scale out storage for the enterprise with Dropbox accessibility.
Veda Shankar, Red Hat Storage

 

Splash page on wordpress

In a recent work, with wordpress, needed a splash page before anyone enter in the *real* page. In the index.php of the wp root installation, this is what I have to have it working.

if( (strpos($_SERVER['HTTP_REFERER'], 'riadeaveiro.pt') === false) && !$_SERVER['QUERY_STRING']){
 include './splash/splash.php';
 exit();
}

/**
 * Front to the WordPress application. This file doesn't do anything, but loads
 * wp-blog-header.php which does and tells WordPress to load the theme.
 *
 * @package WordPress
 */

/**
 * Tells WordPress to load the WordPress theme and output it.
 *
 * @var bool
 */
define('WP_USE_THEMES', true);

/** Loads the WordPress Environment and Template */
require('./wp-blog-header.php');

So, you should replace riadeaveiro.pt for the domain where the wordpress is, and ./splash/splash.php for the path of the slash page that you want to present to your visitor.

A bunch of ffmpeg tutorials

https://wiki.archlinux.org/index.php/FFmpeg

 

 

YouTube Downloader Site
http://www.youtubedownloadersite.com/help.html
Iphone Video (MPEG-4 MP4) 

ffmpeg -i %1 -vcodec mpeg4 -s 480×320 -r 29 -b 900k -ar 44100 -ab 96k -ac 2 %1.mp4

ffmpeg -i %1 -vcodec mpeg4 -qscale 15 -s 480×320 -r 29 -b 900k -ar 44100 -ab 96k -ac 2 %1.mp4

ffmpeg -i %1 -vcodec mpeg4 -qscale 7 -s 480×320 -r 29 -b 900k -ar 44100 -ab 128k -ac 2 %1.mp4

ffmpeg -i %1 -vcodec mpeg4 -qscale 1 -s 640×480 -r 29 -b 1500k -ar 44100 -ab 128k -ac 2 %1.mp4