Dokument-ID Dokumenttyp Verfasser/Autoren Herausgeber Haupttitel Abstract Auflage Verlagsort Verlag Erscheinungsjahr Seitenzahl Schriftenreihe Titel Schriftenreihe Bandzahl ISBN Quelle der Hochschulschrift Konferenzname Quelle:Titel Quelle:Jahrgang Quelle:Heftnummer Quelle:Erste Seite Quelle:Letzte Seite URN DOI Abteilungen OPUS4-1165 misc Kolbeck, Björn; Högqvist, Mikael; Stender, Jan; Hupfeld, Felix Fault-Tolerant and Decentralized Lease Coordination in Distributed Systems Applications which need exclusive access to a shared resource in distributed systems require a fault-tolerant and scalable mechanism to coordinate this exclusive access. Examples of such applications include distributed file systems and master/slave data replication. We present Flease, an algorithm for decentralized and fault-tolerant lease coordination in distributed systems. Our algorithm allows the processes competing for a resource to coordinate exclusive access through leases among themselves without a central component. The resulting system easily scales with an increasing number of nodes and resources. We prove that Flease ensures exclusive access, i.e. guarantees that there is at most one valid lease at any time. 2010 urn:nbn:de:0297-zib-11658 Distributed Algorithms and Supercomputing OPUS4-1153 misc Moser, Monika; Haridi, Seif; Shafaat, Tallat; Schütt, Thorsten; Högqvist, Mikael; Reinefeld, Alexander Transactional DHT Algorithms We present a framework for transactional data access on data stored in a DHT. It allows to atomically read and write items and to run distributed transactions consisting of a sequence of read and write operations on the items. Items are symmetrically replicated in order to achieve durability of data stored in the SON. To provide availability of items despite the unavailability of some replicas, operations on items are quorum-based. They make progress as long as a majority of replicas can be accessed. Our framework processes transactions optimistically with an atomic commit protocol that is based on Paxos atomic commit. We present algorithms for the whole framework with an event based notation. Additionally we discuss the problem of lookup inconsistencies and its implications on the one-copy serializability property of the transaction processing in our framework. 2009 urn:nbn:de:0297-zib-11532 Distributed Algorithms and Supercomputing OPUS4-3411 Wissenschaftlicher Artikel Enke, Harry; Steinmetz, Matthias; Adorf, Hans-Martin; Beck-Ratzka, Alexander; Breitling, Frank; Brüsemeister, Thomas; Carlson, Arthur; Ensslin, Torsten; Högqvist, Mikael; Nickelt, Iliya; Radke, Thomas; Reinefeld, Alexander; Reiser, Angelika; Scholl, Tobias; Spurzem, Rainer; Steinacker, Jürgen; Voges, Wolfgang; Wambsganß, Joachim; White, Steve AstroGrid-D: Grid technology for astronomical science 2011 14 New Astronomy 16 2 79 93 10.1016/j.newast.2010.07.005 Distributed Algorithms and Supercomputing OPUS4-3412 Wissenschaftlicher Artikel Kolbeck, Björn; Högqvist, Mikael; Stender, Jan; Hupfeld, Felix Flease - Lease Coordination Without a Lock Server Los Alamitos, CA, USA IEEE Computer Society 2011 10 Parallel and Distributed Processing Symposium, International 0 978 988 10.1109/IPDPS.2011.94 Distributed Algorithms and Supercomputing OPUS4-3431 Konferenzveröffentlichung Stender, Jan; Högqvist, Mikael; Kolbeck, Björn Loosely Time-Synchronized Snapshots in Object-Based File Systems IEEE Computer Society 2010 Proceedings of the 29th IEEE International Performance, Computing, and Communications Conference 10.1109/PCCC.2010.5682311 Distributed Algorithms and Supercomputing OPUS4-3403 Konferenzveröffentlichung Schäfer, Patrick; Högqvist, Mikael SFA : a symbolic fourier approximation and index for similarity search in high dimensional datasets New York, NY, USA ACM 2012 11 Proceedings of the 15th International Conference on Extending Database Technology 516 527 10.1145/2247596.2247656 Distributed Algorithms and Supercomputing OPUS4-3422 Wissenschaftlicher Artikel Kruber, Nico; Högqvist, Mikael; Schütt, Thorsten The Benefits of Estimated Global Information in DHT Load Balancing Los Alamitos, CA, USA IEEE Computer Society 2011 9 Cluster Computing and the Grid, IEEE International Symposium on 0 382 391 10.1109/CCGrid.2011.11 Distributed Algorithms and Supercomputing OPUS4-3423 Konferenzveröffentlichung Stender, Jan; Kolbeck, Björn; Högqvist, Mikael; Hupfeld, Felix BabuDB: Fast and Efficient File System Metadata Storage Los Alamitos, CA, USA IEEE Computer Society 2010 7 Storage Network Architecture and Parallel I/Os, IEEE International Workshop on 51 58 10.1109/SNAPI.2010.14 Distributed Algorithms and Supercomputing OPUS4-3424 Konferenzveröffentlichung Böse, Joos-Hendrik; Andrzejak, Artur; Högqvist, Mikael Beyond online aggregation: Parallel and incremental data mining with online Map-Reduce New York, NY, USA ACM 2010 NaN Proceedings of the 2010 Workshop on Massive Data Analytics on the Cloud 3:1 3:6 10.1145/1779599.1779602 Distributed Algorithms and Supercomputing OPUS4-3465 Konferenzveröffentlichung Högqvist, Mikael; Plantikow, Stefan Towards Explicit Data Placement in Scalable Key/Value Stores 2009 Architectures and Languages for Self-Managing Distributed Systems (SelfMan@SASO) Distributed Algorithms and Supercomputing OPUS4-3470 Teil eines Buches Talia, Domenico; Trunfio, Paolo; Zeng, Jingdi; Högqvist, Mikael Gorlatch, Sergei; Bubak, Marian; Priol, Thierry A Peer-to-Peer Framework for Resource Discovery in Large-Scale Grids Springer US 2008 14 Achievements in European Research on Grid Systems 123 137 /10.1007/978-0-87-72812-4_10 Distributed Algorithms and Supercomputing OPUS4-3473 Konferenzveröffentlichung Plantikow, Stefan; Högqvist, Mikael Continous Queries over Federated Social Networks Znojmo, Czech Republic 2008 Fourth Doctoral Workshop on Mathematical and Engineering Methods in Computer Science (MEMICS 2008) Distributed Algorithms and Supercomputing OPUS4-3453 Wissenschaftlicher Artikel Plantikow, Stefan; Peter, Kathrin; Högqvist, Mikael; Grimme, Christian; Papaspyrou, Alexander Generalizing the Data Management of Three Community Grids 2009 8 Future Generation Computer Systems (FGCS) 25 3 281 289 10.1016/j.future.2008.05.001 Distributed Algorithms and Supercomputing OPUS4-3461 Konferenzveröffentlichung Högqvist, Mikael; Kruber, Nico Spyropoulos, Thrasyvoulos; Hummel, Karin Passive/Active Load Balancing with Informed Node Placement in DHTs Springer 2009 11 IWSOS 5918 101 112 10.1007/978-3-642-10865-5_9 Distributed Algorithms and Supercomputing OPUS4-3446 Wissenschaftlicher Artikel Högqvist, Mikael Architecture and Self-Tuning of a DISC-system Los Alamitos, CA, USA IEEE Computer Society 2009 TCPP Ph.D. Forum, Int. Parallel and Distributed Processing Symposium 16 10.1109/IPDPS.2009.5160863 Distributed Algorithms and Supercomputing OPUS4-3447 Konferenzveröffentlichung Birkenheuer, Georg; Carlson, Arthur; Fölling, Alexander; Högqvist, Mikael; Hoheisel, Andreas; Papaspyrou, Alexander; Rieger, Klaus; Schott, Bernhard; Ziegler, Wolfgang Connecting Communities on the Meta-Scheduling Level: The DGSI Approach 2009 7 Proceedings of the Cracow Grid Workshop (CGW) 96 103 Distributed Algorithms and Supercomputing OPUS4-3451 Wissenschaftlicher Artikel Hupfeld, Felix; Kolbeck, Björn; Stender, Jan; Högqvist, Mikael; Cortes, Toni; Martí, Jonathan; Malo, Jesus FaTLease: scalable fault-tolerant lease negotiation with Paxos 2009 13 Cluster Computing 12 2 175 188 10.1007/s10586-009-0074-2 Distributed Algorithms and Supercomputing OPUS4-3490 Konferenzveröffentlichung Högqvist, Mikael; Haridi, Seif; Kruber, Nico; Reinefeld, Alexander; Schütt, Thorsten Using Global Information for Load Balancing in DHTs 2008 Workshop on Decentralized Self Management for Grids, P2P, and User Communities Distributed Algorithms and Supercomputing OPUS4-3491 Konferenzveröffentlichung Mejías, B.; Högqvist, Mikael; Roy, P. Visualizing Transactional Algorithms for DHTs Aachen, Germany 2008 IEEE P2P Conference Distributed Algorithms and Supercomputing OPUS4-3493 Konferenzveröffentlichung Hupfeld, Felix; Kolbeck, Björn; Stender, Jan; Högqvist, Mikael; Cortes, Toni; Martí, Jonathan; Malo, Jesus FaTLease: Scalable Fault-Tolerant Lease Negotiation with Paxos Boston, MA, USA 2008 ACM/IEEE International Symposium on High Performance Distributed Computing (HPDC) Distributed Algorithms and Supercomputing OPUS4-3385 Dissertation Högqvist, Mikael Consistent Key-Based Routing in Decentralized and Reconfigurable Data Services 2012 urn:nbn:de:kobv:11-100206145 Distributed Algorithms and Supercomputing OPUS4-5156 Wissenschaftlicher Artikel Högqvist, Mikael; Reinefeld, Alexander RECODE: Reconfigurable, Consistent and Decentralized Data Services IEEE 2013 9 IEEE International Conference on Peer-to-Peer Computing (P2P’13) 1 10 10.1109/P2P.2013.6688705 Distributed Algorithms and Supercomputing OPUS4-3539 Konferenzveröffentlichung Talia, Domenico; Trunfio, Paolo; Zeng, Jingdi; Högqvist, Mikael A Peer-to-Peer Framework for Resource Discovery in Large-Scale Grids 2006 CoreGRID Integration Workshop Distributed Algorithms and Supercomputing OPUS4-3520 misc Talia, Domenico; Trunfio, Paolo; Zeng, Jingdi; Högqvist, Mikael A DHT-based Peer-to-Peer Framework for Resource Discovery in Grids Institute on System Architecture, CoreGRID - Network of Excellence 2006 TR-0048 Distributed Algorithms and Supercomputing OPUS4-3512 Konferenzveröffentlichung Högqvist, Mikael; Röblitz, Thomas; Reinefeld, Alexander Stellaris: An RDF-based Information Service for AstroGrid-D Max Planck Digital Library 2007 German e-Science Conference Distributed Algorithms and Supercomputing OPUS4-3497 Konferenzveröffentlichung Enke, Harry; Steinmetz, Matthias; Radke, Thomas; Reiser, Angelika; Röblitz, Thomas; Högqvist, Mikael AstroGrid-D: Enhancing Astronomic Science with Grid Technology Max Planck Digital Library 2007 German e-Science Conference Distributed Algorithms and Supercomputing