- AutorIn
- Holger Märtens
- Titel
- On Disk Allocation of Intermediate Query Results in Parallel Database Systems
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:15-qucosa2-321259
- Quellenangabe
- Euro-Par`99 Parallel Processing : 5th International Euro-Par Conference Toulouse, France, August 31 - Semptember 3, 1999 Proceedings
Erscheinungsort: Berlin [u.a.]
Verlag: Springer
Erscheinungsjahr: 1999
Titel Schriftenreihe: Lecture Notes in Computer Science
Seiten: 469-476
ISBN: 978-3-540-66443-7 - Erstveröffentlichung
- 1999
- Abstract (EN)
- For complex queries in parallel database systems, substantial amounts of data must be redistributed between operators executed on different processing nodes. Frequently, such intermediate results cannot be held in main memory and must be stored on disk. To limit the ensuing performance penalty, a data allocation must be found that supports parallel I/O to the greatest possible extent. In this paper, we propose declustering even self-contained units of temporary data processed in a single operation (such as individual buckets of parallel hash joins) across multiple disks. Using a suitable analytical model, we find that the improvement of parallel I/O outweighs the penalty of increased fragmentation.
- Freie Schlagwörter (EN)
- Informatics, Database systems
- Klassifikation (DDC)
- 004
- Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:15-qucosa2-321259
- Veröffentlichungsdatum Qucosa
- 07.11.2018
- Dokumenttyp
- Konferenzbeitrag
- Sprache des Dokumentes
- Englisch