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ElasticSearch-Hadoop: Indexing product views count and customer top search query from Hadoop to ElasticSearch

This post covers to use ElasticSearch-Hadoop to read data from Hadoop system and index that in ElasticSearch. The functionality it covers is to index product views count and top search ...
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Integration Tests for External Services

Our systems often depend on 3rd party services (They may even be services internal to the company that we have no control on). Such services include Social Networks exposing APIs, SaaS ...
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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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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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Spring Integration 4.0: A complete XML-free example

1. Introduction Spring Integration 4.0 is finally here, and this release comes with very nice features. The one covered in this article is the possibility to configure an integration ...
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HOW-TO: Quartz Scheduler with Clustering in JEE application with MySQL

Quartz Scheduler is one of the most popular scheduling library in Java world. I had worked with Quartz mostly in Spring applications in the past. Recently, I have been investigating ...
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Jax-RS custom exception handling

One of the nice things about working with JEE is the components available really are pretty standard.  While using JAX-RS, sometimes you need to control how exceptions get processed ...
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