63108 20171026104636.0 doi 10.1002/cpe.1487 sideral 72364 ART-2010-72364 eng (orcid)0000-0003-3057-6273 Tolosana-Calasanz, Rafael Universidad de Zaragoza Adaptive exception handling for scientific workflows 2010 Access copy available to the general public Unrestricted Scientific workflow systems often operate in highly unreliable, heterogeneous and dynamic environments, and have accordingly incorporated different fault tolerance techniques. We propose an exception-handling mechanism, based on techniques adopted in programming languages, for modifying at run-time the structure of a workflow. In contrast to other proposals that achieve the required flexibility by means of the infrastructure, our proposal expresses the exception-handling mechanism within the workflow language—primarily as two exception-handling patterns that are exclusively based on the Reference Nets-within-Nets formalism (a specific type of Petri nets). When an exception is detected, a workflow in our approach can be re-written (replaced), based on the particular failure condition that has been detected. This enables workflow users to have better control and understanding of the behaviour of their workflow without having to be aware of the underlying infrastructure. info:eu-repo/grantAgreement/ES/DGA/IT1-8 info:eu-repo/grantAgreement/ES/MEC/TIN2006-13301 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 0.907 2010 COMPUTER SCIENCE, THEORY & METHODS 54 / 97 = 0.557 2010 Q3 T2 COMPUTER SCIENCE, SOFTWARE ENGINEERING 54 / 99 = 0.545 2010 Q3 T2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion (orcid)0000-0002-4198-8241 Bañares, José A. Universidad de Zaragoza Rana, Omer F. (orcid)0000-0002-6584-7259 Álvarez, Pedro Universidad de Zaragoza (orcid)0000-0002-9622-8186 Ezpeleta, Joaquín Universidad de Zaragoza Hoheisel, Andreas 5007 570 Universidad de Zaragoza Departamento de Informática e Ingeniería de Sistemas Lenguajes y Sistemas Informáticos 22, 5 (2010), 617-642 [24 pp] Concurr. Comput.-Pract. Exp. CONCURRENCY AND COMPUTATION-PRACTICE & EXPERIENCE 1532-0626 549213 http://zaguan.unizar.es/record/63108/files/texto_completo.pdf Postprint 9157 http://zaguan.unizar.es/record/63108/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:63108 articulos driver 2017-10-26-08:27:49 ARTICLE