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Google and its MapReduce framework may rule the roost when it comes to massive-scale data processing, but there’s still plenty of that goodness to go around. This article gets you started with Hadoop, ...

Hadoop Streaming allows developers to use virtually any programming language to create MapReduce jobs, but it’s a bit of a kludge. The MapReduce programming environment needs to be pluggable. I gave ...

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When the Big Data moniker is applied to a discussion, it’s often assumed that Hadoop is, or should be, involved. But perhaps that’s just doctrinaire. Hadoop, at its core, consists of HDFS (the Hadoop ...

前回は、 Web ConsoleからAmazon Elastic MapReduceを起動する方法を説明しました。今回はAPIでの起動方法を紹介していきます。 Web ConsoleとAPIはどこが違うのか 使用前に、 まずWeb ConsoleとAPIの違いをおさえておきましょう。 Webコンソールは、 1回の操作でJobを1つしか ...

Given a corpus, compute how often each of the top-50 most frequent words appears within a window of d words of every other top-50 word — for d = {1, 2, 3, 4 ...

Hadoop is the most significant concrete technology behind the so called “Big Data” revolution. Hadoop combines an economical model for storing massive quantities of data – the Hadoop Distributed File ...