List/Grid Tag Archives: Apache Hadoop

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Configuring Hadoop with Guava MapSplitters

In this post we are going to provide a new twist on passing configuration parameters to a Hadoop Mapper via the Context object. Typically, we set configuration parameters as key/value ...
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Unit testing a Java Hadoop job

In my previous post I showed how to setup a complete Maven based project to create a Hadoop job in Java. Of course it wasn’t complete because it is missing the unit test part . In ...
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Run your Hadoop MapReduce job on Amazon EMR

I have posted a while ago how to setup an EMR cluster by using CLI. In this post I will show how to setup the cluster by using the Java SDK for AWS. The best way to show how to do this ...
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Writing a Hadoop MapReduce task in Java

Although Hadoop Framework itself is created with Java the MapReduce jobs can be written in many different languages. In this post I show how to create a MapReduce job in Java based ...
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Big Data Open Source Security

In security there has never (IMHO) been enough open source solutions and Bruce Schneier has written about this several times in the past, and there’s no need to rewrite the arguments ...
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MapReduce Algorithms – Understanding Data Joins Part 1

In this post we continue with our series of implementing the algorithms found in the Data-Intensive Text Processing with MapReduce book, this time discussing data joins. While we are ...
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Distributed System Development Considerations

There are a number of factors to take into account while developing distributed software systems. If you don’t even know what I am talking about in the first sentence then let me ...
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Setting up Apache Hadoop Multi – Node Cluster

We are sharing our experience about Apache Hadoop Installation in Linux based machines (Multi-node). Here we will also share our experience about different troubleshooting also and ...
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Running Map-Reduce Job in Apache Hadoop (Multinode Cluster)

We will describe here the process to run MapReduce Job in Apache Hadoop in multinode cluster. To set up Apache Hadoop in Multinode Cluster, one can read Setting up Apache Hadoop Multi ...
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Hadoop setup on single node and multi node

We will describe Hadoop setup on single node and multi node. The Hadoop  environment setup and configuration will be described in details. First you need to download the following ...
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