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  • Sorting then formatting du output on Linux

    This is my first blog post in eons and, don’t laugh, its about using Bash/Linux (nothing to do with the recent announcement of  Bash on Windows, I’ve been using Bash on and off for about a year now). As I’m now a hadoop monkey the linux command-line is where I spend a lot of my time and today I discovered awk for the first time and the cool ...
    Posted to Jamie Thomson (Weblog) by jamiet on April 19, 2016
  • Fetch once, write many times

    As I’ve said before these days I’m spending time working on Hadoop rather than SQL Server and one of my colleagues today alerted me to a rather cool feature Of Hive (in a nutshell Hive is the technology that makes enables us to write SQL statements against Hadoop). Check this out: Pretty cool, no? From a single tablescan I can summarise and ...
    Posted to Jamie Thomson (Weblog) by jamiet on May 12, 2015
  • Dumb querying, Impala vs Hive

    I alluded yesterday that I wouldn’t be posting much on this blog for the foreseeable future but I’ve come across something today that was quite interesting so I’m already back. I’m using Hadoop and using Hive (version 0.12) to query the contents of some tables. Here’s the output from issuing “SELECT COUNT(*) FROM tablename” Your eyes don’t ...
    Posted to Jamie Thomson (Weblog) by jamiet on January 7, 2015
  • A story of scale-out on HDInsight

    Lately I have been doing a lot of work using Microsoft’s Hadoop offering, HDInsight. I suspect a lot of people who read my blog are unfamiliar with what Hadoop actually is so I thought I’d recount a recent test I did that exhibits the scale-out nature of processing data on Hadoop. The test used a mapreduce job (written in Java) to process an ...
    Posted to Jamie Thomson (Weblog) by jamiet on October 10, 2014
  • POST rows to HBase REST API on HDInsight using Powershell

    I’ve been very quiet on the blogging front of late. There are a few reasons for that but one of the main ones is that I’ve spent the past three months on a new gig immersing myself in Hadoop, primarily in Microsoft’s Hadoop offering called HDInsight. I’ve got a tonne of learnings that I want to share at some point but in this blog post I’ll start ...
    Posted to Jamie Thomson (Weblog) by jamiet on July 4, 2014
  • My first venture into Hadoop

    If you keep an eye on the tech industry you cannot have failed to notice that an Open Source technology called Hadoop is getting lots of coverage these days. You’ll be able to find lots of descriptions around the web about what Hadoop actually is so I won’t try and come up with one myself other than to say its a technology for storing and querying ...
    Posted to Jamie Thomson (Weblog) by jamiet on February 20, 2013
  • Timewarp: What Is a Relational Database?

    Relational?!? Move On, Geezer!Maybe you're thinking that relational databases management systems (RDBMSs), like Microsoft SQL Server and Oracle, are going the way of punched cards and rotary phones.  After all, there's been a lot of hype these days in the IT media about the rise of so-called NoSQL (Not Only SQL) databases. ...
    Posted to Kevin Kline (Weblog) by KKline on September 5, 2012
  • Hadoop growing pains

    This post is not going to be about SQL Server. I have been reading recently more and more about “Big Data” – very catchy term that describes untamed increase of the data that mankind is producing each day and the struggle to capture the meaning of these data. Ten years ago, and perhaps even three years ago this need was not so recognized. ...
    Posted to Piotr Rodak (Weblog) by rodak.p@gmail.com on June 21, 2012
  • Two TechNet Radio Sessions You Don't Want to Miss

    I was recently honored to speak on TechNet Radio in two separate sessions about BigData & Hadoop and cloud databases (specifically SQL Azure). The show debuted on the TechNet homepage under “Today’s News” and on the TechNet Edge homepage. In each of these shows, I did what I like to do for all the parties I attend - bring a friend. To make ...
    Posted to Kevin Kline (Weblog) by KKline on June 20, 2012
  • PASS Summit 2011, Day 1

    I've already had a few good days in Seattle/Redmond this week, meeting with the Microsoft SQL Server program teams and with other Microsoft SQL Server MVPs. I was as excited as a squeeling Justin Beiber fangirl waiting for his new video, wishing I could tell you all of the cool things I learned at Redmond about the future of SQL Server. But as ...
    Posted to Kevin Kline (Weblog) by KKline on October 13, 2011
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