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  • Blog Post: Hadoop .Net HDFS File Access

    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 of this post is first to ensure folks know about...
  • Blog Post: Implementing a MapReduce Join with Hadoop and the .Net Framework

    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, and the one to be discussed will be a Reduce...
  • Blog Post: C# MapReduce Based Co-occurrence Item Based Recommender

    As promised, to conclude the Co-occurrence Approach to an Item Based Recommender posts I wanted to port the MapReduce code to C#; just for kicks and to prove the code is also easy to write in C#. For an explanation of the MapReduce post review the previous article: http://blogs.msdn.com/b/carlnol/archive...
  • Blog Post: Framework for .Net Hadoop MapReduce Job Submission Json Serialization

    A while back one of the changes made to the “ Generics based Framework for .Net Hadoop MapReduce Job Submission ” code was to support Binary Serialization from Mapper, in and out of Combiners, and out from the Reducer. Whereas this change was needed to support the Generic interfaces there...
  • Blog Post: Hadoop .Net HDFS File Access (Revisited Archived)

    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 provided. This solution enables one to consume HDFS...
  • Blog Post: Generics based Framework for .Net Hadoop MapReduce Job Submission

    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 a final composite post. To understand why lets...
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