Distributed Applications and Interoperable Systems: 14th by Kostas Magoutis, Peter Pietzuch (eds.)

By Kostas Magoutis, Peter Pietzuch (eds.)

This ebook constitutes the lawsuits of the 14th IFIP foreign convention on disbursed functions and Interoperable structures, DAIS 2014, held in Berlin, Germany, in June 2014. The 12 papers provided during this quantity have been rigorously reviewed and chosen from fifty three submissions. They take care of cloud computing, replicated garage, and large-scale systems.

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Extra info for Distributed Applications and Interoperable Systems: 14th IFIP WG 6.1 International Conference, DAIS 2014, Held as Part of the 9th International Federated Conference on Distributed Computing Techniques, DisCoTec 2014, Berlin, Germany, June 3-5, 2014, Proce

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The communication between all nodes follows the virtual synchrony pattern and is realised using the Totem single-ring ordering and membership protocol [6]. Corosync can use multiple physical connections in a cluster to be resilient against link failures or routing errors, replicating all messages either in an active or passive fashion. The Pacemaker cluster manager is responsible for monitoring and managing the cluster. All services are configured using resource agents, small scripts, which map the service specific status variables and init calls to standard Pacemaker calls.

Recent performance improvements for distributed in-memory databases make it now feasible. 6 million transactional 100-byte reads/second on 8 nodes using commodity hardware over an infiniband interconnect [17]. In addition to this, recent work on using relational databases to store file system metadata has shown that relational databases can outperform traditional inode data structures when querying metadata [5]. Our implementation of HDFS replaces the Active-Standby and eventually consistent replication scheme for metadata with a transactional shared memory abstraction.

6] and Kerr et al. [1], which considered the necessity of a community-context factor to incentivise peers for reporting true feedbacks. The main contributions of this paper are: (1) introduction of policies to minimize the impact of system failures in the reputation. We discriminate clients according to their reputation to favour those with high reputation under some conflicting situations, because the reports of those clients will impact more positively the reputation of the provider; (2) evaluation of the impact of the management actions in the reputation and the revenue of the provider to select those with less impact when an actuation is required.

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