Prof. Dr. h.c. Hasso Plattner

Jan Kossmann, M.Sc.

Research Assistant, PhD Candidate

  Phone: +49 (331) 5509-1323
  Fax: +49 (331) 5509-579
  Email: jan.kossmann(at)hpi.de
  Room: V-2.02 (Campus II)

Research Topics

  • In-Memory Databases
  • Self-Adaptive Database Systems


  • Dreseler, M., Kossmann, J., Frohnhofen, J., Uflacker, M., Plattner, H.: Fused Table Scans: Combining AVX-512 and JIT to Double the Performance of Multi-Predicate Scans. Joint Workshop of HardBD (International Workshop on Big Data Management on Emerging Hardware) and Active (Workshop on Data Management on Virtualized Active Systems), in conjunction with ICDE (2018).
  • Kossmann, J., Dreseler, M., Gasda, T., Uflacker, M., Plattner, H.: Visual Evaluation of SQL Plan Cache Algorithms. Australasian Database Conference (ADC) (2018).
  • Dreseler, M., Gasda, T., Kossmann, J., Uflacker, M., Plattner, H.: Adaptive Access Path Selection for Hardware-Accelerated DRAM Loads. Australasian Database Conference (ADC) (2018).
  • Mueller, S., Fritzsche, M., Kossmann, J., Schneider, M., Striebel, J., Baudisch, P.: Scotty: Relocating Physical Objects Across Distances Using Destructive Scanning, Encryption, and 3D Printing. TEI '15 Proceedings of the Ninth International Conference on Tangible, Embedded, and Embodied Interaction. pp. 233-240 (2015).
  • Schwalb, D., Kossmann, J., Faust, M., Klauck, S., Uflacker, M., Plattner, H.: Hyrise-R: Scale-out and Hot-Standby through Lazy Master Replication for Enterprise Applications. Proceedings of the 3rd VLDB Workshop on In-Memory Data Mangement and Analytics (IMDM), in conjunction with VLDB 2015 Kohala Coast, Hawaii (2015).

Supervised Master's Theses


  • Query Plan Reevaluation
  • Leveraging Probabilistic Index Data Structures for In-Memory Databases


  • JIT Compilation for Hyrise
  • Heterogenous Index Distribution in Multi-Node In-Memory Database Systems
  • Building an SQL Interface and Leveraging Query Plan Caching for a Relational Database

Master's Thesis

  • Self-Tuned Index Selection for the Columnar In-Memory Database Hyrise