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Testing Hadoop Programs with MRUnit

 This post will take a slight detour from implementing the patterns found in Data-Intensive Processing with MapReduce to discuss something equally important, testing. I was inspired ...
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Java deadlock troubleshooting and resolution

One of the great things about JavaOne annual conferences is the presentation of several technical and troubleshooting labs presented by subject matter experts. One of these labs did ...
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Method Parameter Names and Spring

Continuing on the previous blog entry about Constructor and method parameters and Java not retaining the parameter names at runtime – the previous entry was about constructor ...
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Packing your Java application as one (or fat) JAR

This post will target an interesting but quite powerful concept: packing your application as single, runnable JAR file, also known as one or fat JAR. We get used to large WAR archives ...
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Bloom Filter Implementation in Java on GitHub

A Bloom Filter is a type of Set Data Structure. For those unaware, a Set Data Structure only has one main method, contains. It’s only used to determine if a specific element ...
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Investigating Deadlocks – Part 2

One of the most important requirements when investigating deadlocks is actually having a deadlock to investigate. In my last blog I wrote some code called DeadlockDemo that used a ...
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Spring MVC Form Validation (With Annotations)

This post provides a simple example of a HTML form validation. It is based on the Spring MVC With Annotations example. The code is available on GitHub in the Spring-MVC-Form-Validation ...
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Lets Crunch big data

As developers our focus is on simpler, effective solutions and thus one of the most valued principle is “Keep it simple and stupid”. But with Hadoop map-reduce it was a bit hard ...
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Is there a better approach to Marker?

Since the launch of Java 1.5 there has been a wide range of discussion and debate on whether to use the Marker interface in Java. This is because Java 1.5 has introduced Annotations ...
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Java features applicability

Java language and standard library is powerful, but with great power comes great responsibility. After seeing a lot of user code misusing or abusing rare Java features on one hand ...
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