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  • Carl's Blog

    FSharpChart release supporting Stacked Charts (version 0.60)

    • 13 Comments
    For the second release this week, FSharpChart now supports binding for Stacked Charts. As always, one can download the latest release from: http://code.msdn.microsoft.com/FSharpChart-b59073f5   In previous versions of FSharpChart it was not very...
  • Carl's Blog

    WinForms HTML Editor

    • 12 Comments
    A few years ago I wrote a WinForms HTML Editor. As I have been working in WinForms again it seemed appropriate to post the code up to a new location: http://code.msdn.microsoft.com/WinForms-HTML-Editor-01dbce1a A document describing the control...
  • Carl's Blog

    Hadoop .Net HDFS File Access (Archived)

    • 12 Comments
    Updated post can be found here: http://blogs.msdn.com/b/carlnol/archive/2013/02/08/hdinsight-net-hdfs-file-access.aspx If you grab the latest installment of Microsoft Distribution of Hadoop you will notice, in addition to the C library, a Managed C...
  • Carl's Blog

    Hadoop .Net HDFS File Access (Revisited Archived)

    • 9 Comments
    Updated post can be found here: http://blogs.msdn.com/b/carlnol/archive/2013/02/08/hdinsight-net-hdfs-file-access.aspx Provided with the Microsoft Distribution of Hadoop, in addition to the C library, a Managed C++ solution for HDFS file access is...
  • Carl's Blog

    Generics based Framework for .Net Hadoop MapReduce Job Submission

    • 8 Comments
    Over the past month I have been working on a framework to allow composition and submission of MapReduce jobs using .Net. I have put together two previous blog posts on this, so rather than put together a third on the latest change I thought I would create...
  • Carl's Blog

    Hadoop .Net HDFS File Access

    • 8 Comments
    Provided with the Microsoft Distribution of Hadoop, HDInsight, is a C library for HDFS file access. This code extends this library through a Managed C++ solution. This solution enables one to consume HDFS files from within a .Net environment. The purpose...
  • Carl's Blog

    Hive and XML File Processing

    • 5 Comments
    When I put together the “ Generics based Framework for .Net Hadoop MapReduce Job Submission ” code one of the goals was to support XML file processing. This was achieved by the creation of a modified Mahout document reader where one can specify the XML...
  • Carl's Blog

    SQL Server Query Performance Analysis using DMVs

    • 4 Comments
    Continuing the TSQL theme I thought it would be worthwhile sharing some TSQL scripts that I have been using over the years for tuning SQL Server queries… From the development perspective I often have to perform an analysis of a database application. More...
  • Carl's Blog

    Hadoop Streaming and F# MapReduce

    • 3 Comments
    And now for something completely different. As you may know Microsoft has recently announced plans for a Hadoop adoption for both Windows Server and Windows Azure . You can find out more about Hadoop and Windows Azure at Apache Hadoop-based Services...
  • Carl's Blog

    Hadoop Binary Streaming and PDF File Inclusion

    • 3 Comments
    In a previous post I talked about Hadoop Binary Streaming for the processing of Microsoft Office Word documents. However, due to there popularity, I thought inclusion for support of Adobe PDF documents would  be beneficial. To this end I have updated...
  • Carl's Blog

    Managing Hive Job Submissions With PowerShell

    • 3 Comments
    In my previous post, I talked about “ Managing Your HDInsight Cluster with PowerShell ”. In this post I made no mention of using Hive. I hope to re-address this balance by specifically talking about how you can submit Hive jobs from the same local management...
  • Carl's Blog

    Managing Your HDInsight Cluster and .Net Job Submissions using PowerShell

    • 3 Comments
    This post explains how best to manage an HDInsight cluster using a management console and Windows PowerShell. The goal is to outline how to create a simple cluster, provide a mechanism for managing an elastic service, and demonstrate how to customize...
  • Carl's Blog

    FSharpChart minor release available (version 0.56)

    • 3 Comments
    The new version of FSharp.Chart (formely FSharpChart) can now be found on GitHib at: http://fsharp.github.io/FSharp.Charting/ I have provided a minor update to FSharpChart, which can be downloaded from the usual place: http://code.msdn.microsoft...
  • Carl's Blog

    Deploying Hadoop Rack Awareness with PowerShell

    • 2 Comments
    In a previous post I talked about Implementing Hadoop Rack Awareness with PowerShell . One thing I skimmed over in this post was how to deploy the necessary files to the cluster and make the configuration file changes. Once again PowerShell is your friend...
  • Carl's Blog

    Pushing Hadoop Cluster Configuration Changes using PowerShell

    • 2 Comments
    In my previous post I talked about Implementing and Deploying Rack Awareness using PowerShell. However PowerShell is a great tool for not only managing things like Rack Awareness but for installing and managing the Hadoop cluster; especially for managing...
  • Carl's Blog

    Adventures in TSQL: Comma separated string from column values

    • 2 Comments
    It seems that several times now I have had the requirement to create a comma separated string from column values. The latest reason for doing this was to build up a list of table column names such that a view could be generated for the table. This is...
  • Carl's Blog

    Adventures in TSQL: Adding date and time values

    • 2 Comments
    With the addition of the SQL Server date and time types, I have often found myself needing to create a datetime (or datetime2) value based on the addition of a date and a time value. However, there is no built-in function for such an operation. There...
  • Carl's Blog

    Using Hadoop on Azure JS Console for Data Visualizations

    • 1 Comments
    In my last past I demonstrated a F# MapReduce program based on Hadoop Streaming. One thing that intrigued me was the possibility of using the JS Console for doing a quick visualization of the MapReduce output. So here is my first foray into the idea....
  • Carl's Blog

    Implementing a MapReduce Join with Hadoop and the .Net Framework

    • 1 Comments
    I have often been asked how does one implement a Join whilst writing MapReduce code. As such, I thought it would be useful to add an additional sample demonstrating how this is achieved. There are multiple mechanisms one can employ to perform a Join operation...
  • Carl's Blog

    FSharpChart for Valentines Day

    • 1 Comments
    As I have not posted anything about FSharpChart for a while I thought I would do a quick post, one that befits Valentines Day: Plotting the heart was surprisingly easy to do: [ for x in -1.1 .. 0.001 .. 1.0 do      let y1 = abs(x)+sqrt(1.0-x**2.0)   ...
  • Carl's Blog

    Hadoop Streaming in F# and MapReduce (summary)

    • 0 Comments
    With all my recent posts around Hadoop Streaming I thought it would be useful to summarize them into a single post. The main objective of these posts was to put together a codebase to enable F# developers to write Map/Reduce libraries through a simple...
  • Carl's Blog

    Framework for Composing and Submitting .Net Hadoop MapReduce Jobs (Archived)

    • 0 Comments
    An updated version of this post can be found at: http://blogs.msdn.com/b/carlnol/archive/2012/04/29/generic-based-framework-for-net-hadoop-mapreduce-job-submission.aspx If you have been following my blog you will see that I have been putting together...
  • Carl's Blog

    .Net Hadoop MapReduce Job Framework - Revisited (Archived)

    • 0 Comments
    An updated version of this post can be found at: http://blogs.msdn.com/b/carlnol/archive/2012/04/29/generic-based-framework-for-net-hadoop-mapreduce-job-submission.aspx If you have been using the Framework for Composing and Submitting .Net Hadoop...
  • Carl's Blog

    Co-occurrence Approach to an Item Based Recommender Update

    • 0 Comments
    In a previous post I talked about a Co-occurrence Approach to an Item Based Recommender , that utilized the Math.Net Numerics library. Recently the Math.Net Numerics library was updated to version 2.3.0. With this version of the library I was able to...
  • Carl's Blog

    .Net Implementation of a Priority Queue (aka Heap)

    • 0 Comments
    I thought I would take a break for a while from Hadoop and put together an F# .Net implementation of a Priority Queue; implemented using a heap data structure. Conceptually we can think of a heap as a balanced binary tree. The tree will have a root, and...
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