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Hive: Query customer top search query and product views count using Apache Hive

This post covers to use Apache Hive to query the search clicks data stored under Hadoop. We will take examples to generate customer top search query and statistics on total product ...
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Flume: Gathering customer product search clicks data using Apache Flume

This post covers to use Apache flume to gather customer product search clicks and store the information using hadoop and elasticsearch sinks. The data may consist of different product ...
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Java Singleton Design Pattern

Its one of the simplest design pattern in Java. If any one asks me which design pattern you are good then I would proudly say Singleton. But when they ask in depth concept of singleton ...
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Declarative Linking in Jersey 2.9 and up

A couple of weeks ago A couple of months ago I was looking how I was going to engineers new REST API for an Oracle Cloud project. Once of the things I had planned to do was to use ...
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Adding C3PO Connection Pooling in Spring JDBC

Connection pooling is an operation in which a system pre-initializes the connections to be used in the future. This is done since creating connections at the time of use is an expensive ...
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Java EE7 and Maven project for newbies – part 3 – defining the ejb services and jpa entities modules

Resuming from the previous parts Part #1 Part #2 We are resuming for the third part, we already have a parent pom and we have already defined the pom for our war module. In our original ...
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JavaFX 8u20 Days of Future Past (Always On Top)

It’s been a long time since I’ve posted topics relating to JavaFX. So, if you are still following along, awesome! Introduction In this blog post I want to blog about a very cool ...
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How to find Prime Factors of Integer Numbers in Java – Factorization

One of the common homework/task in programming courses is about Prime Factorization. You are asked to write a program to find prime factors of given integer number. The prime factors ...
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OutOfMemoryError on overprovisioned heap

Why am I getting the OutOfMemoryError when allocating a data structure that should happily fit within the heap I have provided for the JVM? This was a question I recently faced. Indeed, ...
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Java 8 default methods can break your (users’) code

At first glance, default methods brought a great new feature to the Java Virtual Machine’s instruction set. Finally, library developers are able to evolve established APIs without ...
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