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Using Object Replication for Building a Dependable Version Control System

  • Rüdiger Kapitza
  • Peter Baumann
  • Hans P. Reiser
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5053)

Abstract

Object-oriented technologies are frequently used to design and implement distributed applications. Object replication is a well-established approach to increase the dependability for such applications. Generic replication infrastructures often fail to meet non-standard application-specific requirements such as support for client-side computing. Our FTflex replication infrastructure combines the fragmented object model with semantic annotations in order to customize and optimize replication mechanisms, and thus provides a more flexible replication infrastructure.

This paper presents DiGit, a replicated version control system based on the architecture of Git. DiGit is implemented with the help of the FTflex infrastructure for object replication. The contributions of this paper are twofold. First, the paper evaluates the fitness of our replication framework for a specific, complex application. We identify two advantages of the replication infrastructure: the ability to provide client-side code as a conceptually integral part of a remote service, and support for an optimized protocol for remote interaction. As a second contribution, the paper presents a powerful replicated version control system and shows the lessons learned from using object replication in such a system.

Keywords

Object Replication Version Control System 

References

  1. 1.
    Kurmann, C., Stricker, T.M.: Zero-copy for CORBA - efficient communication for distributed object middleware. In: 12th IEEE Int. Symp. on High Performance Distributed Computing, pp. 4–13. IEEE Computer Society, Los Alamitos (2003)Google Scholar
  2. 2.
    Bakker, A., Amade, E., Ballintijn, G., Kuz, I., Verkaik, P., van der Wijk, I., van Steen, M., Tanenbaum, A.S.: The globe distribution network. In: Proc. of the USENIX Annual Conference, pp. 141–152 (2000)Google Scholar
  3. 3.
    Bar, M., Fogel, K.: Open Source Development with CVS, 3rd edn. Paraglyph (2003)Google Scholar
  4. 4.
    Baudis, P.: Git - fast version control system, http://git.or.cz
  5. 5.
  6. 6.
    Felber, P.: The CORBA Object Group Service: A Service Approach to Object Groups in CORBA. PhD thesis, EPLF, Switzerland, Number 1867 (1998)Google Scholar
  7. 7.
    Felber, P., Narasimhan, P.: Experiences, strategies, and challenges in building fault-tolerant CORBA systems. IEEE Trans. Comput. 53(5), 497–511 (2004)CrossRefGoogle Scholar
  8. 8.
  9. 9.
    Hauck, F.J., Kapitza, R., Reiser, H.P., Schmied, A.I.: A flexible and extensible object middleware: CORBA and beyond. In: Proc. of the Fifth Int. Workshop on Software Engineering and Middleware. ACM Digital Library (2005)Google Scholar
  10. 10.
    Hoare, G., Smith, N., Scherger, D.: Monotone - A distributed version control system, document version 0.35 (2006)Google Scholar
  11. 11.
    Homburg, P., van Doorn, L., van Steen, M., Tanenbaum, A.S., de Jonge, W.: An object model for flexible distributed systems. In: Proc. of the 1st Annual ASCI Conference, pp. 69–78 (1995)Google Scholar
  12. 12.
    IONA and Isis. An introduction to Orbix+Isis. IONA Technologies Ltd. And Isis Distributed Systems, Inc. (1994)Google Scholar
  13. 13.
    Kapitza, R., Schmidt, H., Bartlang, U., Hauck, F.J.: A generic infrastructure for decentralised dynamic loading of platform-specific code. In: Indulska, J., Raymond, K. (eds.) DAIS 2007. LNCS, vol. 4531, Springer, Heidelberg (2007)Google Scholar
  14. 14.
    Makpangou, M., Gourhant, Y., Narzul, J.-P.L., Shapiro, M.: Fragmented objects for distributed abstractions. In: Casavant, T.L., Singhal, M. (eds.) Readings in distributed computing systems, pp. 170–186. IEEE Computer Society Press, Los Alamitos (1994)Google Scholar
  15. 15.
    Moser, L.E., Melliar-Smith, P.M., Narasimhan, P.: Consistent object replication in the eternal system. Theor. Pract. Object Syst. 4(2), 81–92 (1998)CrossRefGoogle Scholar
  16. 16.
    Object Management Group (OMG). Common object request broker architecture: Core specification, version 3.0.2. OMG document formal/02-12-02 (2002)Google Scholar
  17. 17.
    Pilato, C.M., Collins-Sussman, B., Fitzpatrick, B.W.: Version Control with Subversion, 1st edn. O’Reilly Media, Sebastopol (2004)Google Scholar
  18. 18.
    Pyarali, I., Harrison, T.H., Schmidt, D.C.: Design and performance of an object-oriented framework for high-speed electronic medical imaging. Computing Systems 9(4), 331–375 (1996)Google Scholar
  19. 19.
    Reiser, H.P., Hauck, F.J., Kapitza, R., Schmied, A.I.: Integrating fragmented objects into a CORBA environment. In: Proc. of the Net.ObjectDays, pp. 264–272 (2003)Google Scholar
  20. 20.
    Reiser, H.P., Kapitza, R., Domaschka, J., Hauck, F.J.: Fault-tolerant replication based on fragmented objects. In: Eliassen, F., Montresor, A. (eds.) DAIS 2006. LNCS, vol. 4025, pp. 256–271. Springer, Heidelberg (2006)CrossRefGoogle Scholar
  21. 21.
    Reiser, H.P., Steckermeier, M., Hauck, F.J.: IDLflex: a flexible and generic compiler for CORBA IDL. In: Proc. of the Net.Object Days, pp. 151–160 (2001)Google Scholar
  22. 22.
    Yip, A., Chen, B., Morris, R.: Pastwatch: a distributed version control system. In: Proc. of the USENIX/ACM 3rd NSDI (2006)Google Scholar

Copyright information

© IFIP International Federation for Information Processing 2008

Authors and Affiliations

  • Rüdiger Kapitza
    • 1
  • Peter Baumann
    • 1
  • Hans P. Reiser
    • 2
  1. 1.Dept. of Comp. Sciences 4University of Erlangen-NürnbergGermany
  2. 2.LaSIGEUniversity of LisboaPortugal

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