eprintid: 3711 rev_number: 8 eprint_status: archive userid: 67 dir: disk0/00/00/37/11 datestamp: 2017-06-07 11:10:53 lastmod: 2017-06-07 11:10:53 status_changed: 2017-06-07 11:10:53 type: book_section metadata_visibility: show creators_name: Barbi, Roberta creators_name: Buravlev, Vitaly creators_name: Mezzina, Claudio Antares creators_name: Schiavoni, Valerio creators_id: creators_id: creators_id: claudio.mezzina@imtlucca.it creators_id: title: Block Placement Strategies for Fault-Resilient Distributed Tuple Spaces: An Experimental Study - (Practical Experience Report) ispublished: pub subjects: QA75 divisions: CSA full_text_status: public pres_type: paper abstract: The tuple space abstraction provides an easy-to-use programming paradigm for distributed applications. Intuitively, it behaves like a distributed shared memory, where applications write and read entries (tuples). When deployed over a wide area network, the tuple space needs to efficiently cope with faults of links and nodes. Erasure coding techniques are increasingly popular to deal with such catastrophic events, in particular due to their storage efficiency with respect to replication. When a client writes a tuple into the system, this is first striped into k blocks and encoded into n > k blocks, in a fault-redundant manner. Then, any k out of the n blocks are sufficient to reconstruct and read the tuple. This paper presents several strategies to place those blocks across the set of nodes of a wide area network, that all together form the tuple space. We present the performance trade-offs of different placement strategies by means of simulations and a Python implementation of a distributed tuple space. Our results reveal important differences in the efficiency of the different strategies, for example in terms of block fetching latency, and that having some knowledge of the underlying network graph topology is highly beneficial date: 2017 date_type: published series: Lecture Notes in Computer Science volume: 10320 publisher: Springer pagerange: 67-82 event_title: Distributed Applications and Interoperable Systems - 17th IFIP WG 6.1 International Conference, DAIS 2017, Held as Part of the 12th International Federated Conference on Distributed Computing Techniques, DisCoTec 2017, Neuch\^tel, Switzerland, June 19-22, event_type: conference refereed: TRUE isbn: 978-3-319-59664-8 book_title: Distributed Applications and Interoperable Systems - 17th IFIP WG 6.1 International Conference, DAIS 2017 citation: Barbi, Roberta and Buravlev, Vitaly and Mezzina, Claudio Antares and Schiavoni, Valerio Block Placement Strategies for Fault-Resilient Distributed Tuple Spaces: An Experimental Study - (Practical Experience Report). In: Distributed Applications and Interoperable Systems - 17th IFIP WG 6.1 International Conference, DAIS 2017. Lecture Notes in Computer Science, 10320 . Springer, pp. 67-82. ISBN 978-3-319-59664-8 (2017) document_url: http://eprints.imtlucca.it/3711/1/dais2017.pdf