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Feb
16
By Edin DELJKIĆ

Regression Suite

Release management and continuous integration processes are real reflection of team’s maturity and experience. Software development process itself requires considerable amount of coordination and communication to make sure that every piece of the puzzle fits perfectly so that product can be delivered to the market or the customer.
Feb
13
By Dino OGLIĆ

Apache Solr – Slow queries and frequent terms

In this article we will try to present the importance of understanding the data in pursuit for optimal response time of search engine. By comprehending the data and the user you are able to tune a good generic search tool to meet your needs and demands. At the beginning article [...]
Feb
10
By Samir ELJAZOVIĆ

Amazon Elastic MapReduce – Part 2 (Amazon S3 Input Format)

In previous article “Amazon Elastic MapReduce – Part 1” we explained basic steps on how to create and setup small Hadoop cluster on Amazon EMR together with instructions on how to run custom MapReduce job. The focus of  this article is going to be the method for accessing the files stored [...]
Feb
10
By Sanel ZUKAN

HBase backup, anyone?

Sort of intro Remember ‘undelete’ command from MS-DOS? I surely do and I often course modern file systems and their designers why this is no more provided on modern filesystems. Maybe we are living in more complex world than before and this ‘feature’ can not be easily implemented any more [...]
Feb
10
By Amina KADRIĆ

Hadoop powered BI and Analytics – Part 2

After providing short introduction to Big Data analytics on the Hadoop in the first article of this series, the focus of this one is to introduce the vendors market and the spectrum of Big Data analytics platforms. Completely commercial enterprise solutions provided by SAP, Oracle, IBM, Microsoft and other big [...]
Feb
6
By Amina KADRIĆ

Hadoop powered BI and Analytics – Part 1

The need to easily access, store and analyze high-volume unstructured data, commonly known as Big Data, has been initially triggered by Facebook, Amazon, Yahoo and Google who began implementing Big Data models to satisfy their interaction data requirements which relational databases, traditional ETL and BI could not handle anymore. The [...]
Jan
27
By Aida RIKOVIĆ

Jmeter components

In order to have a functional testing tool which will provide us the possibility to cover the test cases for a variety of technologies, we have extended Jmeter. Below you can find some extensions created by our company: The source code of Apache Jmeter components are available on github Samplers [...]
Jan
13
By Mladen ANTUNOVIĆ

How To Build Optimal Hadoop Cluster

Preface Amount of data stored in database/files is growing every day, using this fact there become a need to build cheaper, mainatenable and scalable environments capable of storing  big amounts of data („Big Data“). Conventional RDBMS systems became too expensive and not scalable based on today’s needs, so it is [...]
Jan
13
By Samir ELJAZOVIĆ

Amazon Elastic MapReduce – Part 1

Introduction Hadoop as a platform enables us to store and process vast amounts of data. Storage capacity and processing power are directly related to the size of our Hadoop cluster and scaling it up is a simple as adding new nodes to the cluster.  Amazon Elastic MapReduce service gives us [...]
Jan
13
By Nermin ČALUK

Five Important Aspects of Successful Test Automation Approach in Agile

Engineers in charge of Test Automation (further: “TA”) face different challenges in the projects, depending on team size, geographic locations of teams, complexity of project, technologies, methodology/lifecycle used etc. In this whitepaper, we focus on understanding and dealing with TA challenges common in Agile environment. The fundamental difference between Agile [...]
Jan
12
By Nermin ČALUK

Software Issue Diagnosis – Using Automated Checks with Jmeter

The Problem One of the fundamental questions in any business is how to spend time. Striving to systematically save time on every single step in a software development process is often overlooked. This paper discusses how automated software checks provide valuable insight into the state of a product, which saves time [...]
Jan
12
By Aida RIKOVIĆ

Jmeter as functional testing tool and easily extendable tool

Software development includes functional testing no matter which methodology you are using: waterfall, agile or any other. With the rapid growth of software development expectations and new technologies like hadoop, we need a tool which can fulfill most of our functional testing needs. Apache Jmeter is one of these tools, [...]
Jan
6
By Amir HADŽIĆ

Hadoop – Identifying and skipping processed data

A paper on indentifying and skipping processed data – an effort to minimize cloud resource wasting in Hadoop when processing data from HDFS. Problem The main problem that I’m trying to describe and resolve in this paper is identifying and skipping processed data on Hadoop. In turn this helped us [...]
Jan
6
By Davor KOVAČIĆ

HBase – Row level timestamp consistency in HBase

At its core, HBase is distributed, persistent, sparse column oriented, multidimensional data repository. Multiple dimensions of data are supported by having multiple versions of each HBase table cell. This enables unique identification of each cell by 3 keys: row key, column and version. Following is a simplified view on how [...]