Building a Fast Data Front End for Hadoop

Big Data

Screencast  Building a Fast Data Front End for Hadoop.

Date: This event took place live on June 24 2015
Presented by: John Hugg
Duration: Approximately 60 minutes.
Cost: Free

Description:

Massive increases in both the volume and velocity of data have led to the development of interactive, real-time applications on fast streaming data. These fast data applications are often the front ends to Big Data (data at rest) and require integration between Fast + Big. To provide maximum value they require a data pipeline with the ability to compute real-time analytics on fast moving data, to make transactional decisions against state, and ultimately deliver data at high speeds to long-term Hadoop-based analytics stores like Cloudera, Hortonworks and MapR.

The new challenge is building applications that tap fast data and seamlessly integrate with the value contained in data stores — combining machine learning and dynamic processing. A variety of approaches are employed including Apache Storm, Spark Streaming, Samza, and in-memory database technology.

During this webcast you will learn:

  • The pros and cons of the various approaches used to create fast data applications
  • The pros and cons of Lambda and Kappa architectures compared to more traditional approaches
  • Understand the tradeoffs and advantages surrounding the resurgence of ACID and SQL
  • How integration with the Hadoop ecosystem can reduce latency and improve transactional intelligence

About John Hugg, Founding Engineer

John Hugg is a Software Developer at VoltDB. He has spent his entire career working with databases and information management. In 2008, he was lured away from a Ph.D. program by Mike Stonebraker to work on what became VoltDB. As the first engineer on the product, he liaised with a team of academics at MIT, Yale, and Brown who were building H-Store, VoltDB’s research prototype. Then he helped build the world-class engineering team at VoltDB to continue development of the open source and commercial products.

 

 

.imagesLoaded is not a function

Sh*ts,

I’m using mustache.js, masonry and I was trying to use imagesLoaded to avoid overlapping images.

My code was returning me .imagesLoaded is not a function…
Some people on the interwebs said that disabling Rocket Loader in CloudFlare… didn’t work for me.

After more than 2 hours I got the solution – without using imagesLoaded -.

    $(window).load(function() {

      // Masonry Trigger
      var $container = $('#masonry-wrap');

      $container.masonry({
         // options
         itemSelector: '.masonry-box', 
         columnWidth: 283 
      });

    });

 

Solution was taken from jQuery masonry with WordPress and imagesLoaded and given by McNab!

MacBook Pro, no battery performance hack

Sh*ts, ,

Almost one year ago, I’v removed my Macbook Pro battery…
Since that day… my laptop was f*cking slow.

This is how I’v solved it – following the article from http://www.rdoxenham.com/?p=259.

Find out our model’s name
MacBook-Pro-de-Paulo:~ PJunior$ system_profiler -detailLevel mini | grep "Model Identifier:"
 Model Identifier: MacBookPro5,1
Do the sh*t!

Lets move to root

sudo bash

Lets go to the right folder

bash-3.2# cd /System/Library/Extensions/IOPlatformPluginFamily.kext/Contents/PlugIns/ACPI_SMC_PlatformPlugin.kext/Contents/Resources/

iTerm

Lets move the .plist of our model out of that folder…
– change the destination folder to your needs –

mv MacBookPro5_1.plist /Users/PJunior/

Reboot and it’s done.

All the credits go to http://www.rdoxenham.com/?p=259.

WARNING: local host name (digitalwhores) is not qualified; see cf/README: WHO AM I?

Ubuntu

While installing sendmail, I got the following error…

WARNING: local host name (digitalwhores) is not qualified; see cf/README: WHO AM I?

Lets edit /etc/hostname and make it digitalwhores.net.

sudo nano /etc/hostname

Lets run sendmailconfig

sudo sendmailconfig

I saw the solution @ http://unix.stackexchange.com/questions/1551/what-is-sendmail-referring-to-here/210999 – tnks to Jadeye for alerting me that I might need to restart the server.