Master Thesis: Create and evaluate a Random Compaction Strategy for Cassandra

Job Description

Date: Oct 2, 2019

Do you want to do your thesis with us in Karlskrona? 

 

Would you like the chance to do your thesis together with one of the world’s leading technology companies? We are on a quest to enable communication for everyone and everything and we believe that we do that by being as innovative as possible. If you want to help us to be even more innovative – then you are on the right track! 

 

We want you to become a part of a truly global company working across borders in 180 countries, offering a diverse, performance-driven culture & an innovative & engaging environment where employees enhance their potential every day. Come and learn and grow with us at Ericsson.

 

Purpose/background:  

 

In Cassandra data is stored in immutable data files called SSTables. Cassandra is continuously executing background tasks called “compactions” in order to reclaim diskspace and optimize read performance. These compaction tasks will select a few existing SSTables and merge their content into new SSTables. In the process overlapping and deleted data will be removed. Different strategies exist to manage large sets of SSTables to make the compaction process as efficient as possible. In this thesis the student(s) will implement a semi-random compaction strategy and evaluate its performance on different workloads. Performance will be compared to existing compactions strategies in Cassandra.

 

We believe this thesis is done by two students, who enjoy working with Java and have an analytical mind. Here, you will get the opportunity to work with new technologies and open source software.

 

Competence:

 

Java, Data Analysis and Visualization

 

Application 

 

If you feel interested, please send in your application as soon as possible. The start date can be adjusted to both your and the business needs – the intention is to start in January 2020.

 

While applying please attach your updated CV, current grades and cover letter written in English into one document (under CV field in the application tool) and clearly define your technical knowledge.

 

If you have any additional questions, please contact our Recruiter Elzbieta Penpeska at elzbieta.penpeska@ericsson.com

 

Ericsson provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, sexual orientation, marital status, pregnancy, parental status, national origin, ethnic background, age, disability, political opinion, social status, veteran status, union membership or genetics.

Ericsson complies with applicable country, state and all local laws governing nondiscrimination in employment in every location across the world in which the company has facilities. In addition, Ericsson supports the UN Guiding Principles for Business and Human Rights and the United Nations Global Compact.

This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, training and development.

Ericsson expressly prohibits any form of workplace harassment based on race, color, religion, sex, sexual orientation, marital status, pregnancy, parental status, national origin, ethnic background, age, disability, political opinion, social status, veteran status, union membership or genetic information.

 

Primary country and city: Sweden (SE) || || Karlskrona || Stud&YP

Req ID: 299873