Engineer: Data Placement and Retrieval in Erasure

Le descriptif de l’offre ci-dessous est en Anglais_

**Contrat renouvelable **:Oui

**Niveau de diplôme exigé **:Bac + 5 ou équivalent

**Fonction **:Ingénieur scientifique contractuel

**A propos du centre ou de la direction fonctionnelle**:
The Inria Centre at Rennes University is one of Inria's eight centres and has more than thirty research teams. The Inria Centre is a major and recognized player in the field of digital sciences. It is at the heart of a rich R&D and innovation ecosystem: highly innovative PMEs, large industrial groups, competitiveness clusters, research and higher education players, laboratories of excellence, technological research institute, etc

**Contexte et atouts du poste**:
**Financial and working environment.**

The position is for one year, with the possibility of an extension to 18 months.

About Hive:
Hive intends to play the role of a next generation cloud provider in the context of Web 3.0. Hive aims to exploit the unused capacity of computers to offer the general public a greener and more sovereign alternative to the existing clouds where the true power lies in the hands of the users. It relies both on distributed peer-to-peer networks, on the encryption of end-to-end data and on blockchain technology.

**Mission confiée**:
**Context**:
**Objectives**:
The goal of this engineer position is to implement existing Erasure coding families in Go and to develop new data placement and retrieval stratifies for erasure coded IPFS [8]. The engineer will work closely with a PhD student on this topic.

[1] H. Chen, H. Zhang, M. Dong, Z. Wang, Y. Xia, H. Guan, and B. Zang. “Efficient and available in
- memory KV-store with hybrid erasure coding and replication”. In: ACM Transactions on Storage (TOS) 13.3 (2017), pp. 1-30. doi: 10.1145/3129900.

[3] J. Darrous, S. Ibrahim, and C. Pérez. “Is it Time to Revisit Erasure Coding in Data-Intensive Clusters?” In: 27th IEEE International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunication Systems, MASCOTS 2019, Rennes, France, October 21-25, 2019. IEEE Computer Society, 2019, pp. 165-178. doi: 10.1109/MASCOTS.2019.00026.

[4] Z. Zhang, A. Deshpande, X. Ma, E. Thereska, and D. Narayanan. Does erasure coding have a role to play in my data center? Tech. rep. MSR-TR-2010-52. May 2010.

[5] K. V. Rashmi, M. Chowdhury, J. Kosaian, I. Stoica, and K. Ramchandran. “EC-Cache: Load-Balanced, Low-Latency Cluster Caching with Online Erasure Coding”. In: 12th USENIX Symposium on Operating Systems Design and Implementation, OSDI 2016, Savannah, GA, USA, November 2-4, 2016. Ed. by K. Keeton and T. Roscoe. USENIX Association, 2016, pp. 401-417.

[6] J. Kubiatowicz, D. Bindel, Y. Chen, S. Czerwinski, P. Eaton, D. Geels, R. Gummadi, S. Rhea, H. Weatherspoon, W. Weimer, C. Wells, and B. Zhao. “OceanStore: An Architecture for Global
- Scale Persistent Storage”. In: SIGPLAN Not. 35.11 (Nov. 2000), pp. 190-201. issn: 0362-1340. doi: 10.1145/356989.357007.

[7] R. Rodrigues and B. Liskov. “High Availability in DHTs: Erasure Coding vs. Replication”. In: Peer-to-Peer Systems IV, 4th International Workshop, IPTPS 2005, Ithaca, NY, USA, February 24-25, 2005, Revised Selected Papers. Ed. by M. Castro and R. van Renesse. Vol. 3640. Lecture Notes in Computer Science. Springer, 2005, pp. 226-239. doi: 10.1007/11558989\_21.

[8] J. Benet. “IPFS - Content Addressed, Versioned, P2P File System”. In: CoRR abs/1407.3561 (2014). doi: 10.48550/arXiv.1407.3561. arXiv: 1407.3561.

**Principales activités**:

- Implement several erasure coding families in Go and integrate them within IPFS
- Study new algorithms for data placement and retrieval
- Prototype key algorithms
- Run experiments and Evaluation of results
- Reporting, disseminating and presenting results

**Compétences**:

- Engineering and/or Master 2 degree in Computer science
- Good knowledge in distributed systems
- Software development skills: Python and Go
- Knowledge on storage and file systems
- Good collaborative and networking skills
- Excellent written and oral communication in English

**Avantages**:

- Subsidized meals
- Partial reimbursement of public transport costs
- Leave: 7 weeks of annual leave + 10 extra days off due to RTT (statutory reduction in working hours) + possibility of exceptional leave (sick children, moving home, etc.)
- Possibility of teleworking (after 6 months of employment) and flexible organization of working hours
- Professional equipment available (videoconferencing, loan of computer equipment, etc.)
- Social, cultural and sports events and activities
- Access to vocational training
- Social security coverage

**Rémunération**:
The engineer will receive a salary of €2,695 gross per month, based on their profile.

**Informations générales**:

- **Thème/Domaine**: Systèmes distribués et intergiciels
Système & réseaux (BAP E)
- **Ville**: Rennes
- **Centre Inria**: Centre Inria de l'Université de Rennes
- **Date de p