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首页> 外文会议>Data grid for escience workshop 2009 >Replicated Data Management in the Grid: The Re:GRIDiT Approach
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Replicated Data Management in the Grid: The Re:GRIDiT Approach

机译：网格中的复制数据管理：Re：GRIDiT方法

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Grid environments more and more target novel domains such as eScience, eHealth or digital libraries that feature a variety of data-intensive applications. Consequently, issues related to data management in Grids are becoming increasingly important. In terms of data management, the Grid allows keeping a large number of replicas of data objects, possibly with different versions or levels of freshness, to allow for a high degree of availability, reliability and performance so as to best meet the needs of users and applications. At the same time, the seamless integration of replication management into the Grid while taking into account its special characteristics, needs to be done without any central component for managing data or metadata. In this paper, we report on the ongoing Re:GRIDiT project which aims at addressing all the above requirements. Re:GRIDiT distinguishes between potentially many updateable and read-only replicas which can be distributed across a Grid environment. First, Re:GRIDiT provides new protocols for the correct synchronization of concurrent updates to different updateable replicas and their subsequent propagation in a completely distributed way. Second, Re:GRIDiT takes into account the semantics of the data which is managed in the Grid: mutable data can be subject to updates; immutable data, in turn, cannot be changed once created, but may be subject to version control. Third, Re:GRIDiT will be dynamic in a way that according to the current load, new replicas (updateable or read-only) can be created or removed on demand. Fourth, Re:GRIDiT will provide read-only transactions the full flexibility to specify the freshness (for mutable data) or version number (for immutable data) - which is particularly usefulrnin order to trade accuracy for performance in the access to data in the Grid.
机译：网格环境越来越多地将目标对准具有各种数据密集型应用程序的新型领域，例如eScience，eHealth或数字图书馆。因此，与网格中的数据管理有关的问题变得越来越重要。在数据管理方面，网格允许保留大量数据对象的副本，可能具有不同的版本或新鲜度，以实现高度的可用性，可靠性和性能，从而最好地满足用户和用户的需求。应用程序。同时，需要在没有任何中央组件来管理数据或元数据的情况下，将复制管理无缝集成到Grid中，同时考虑其特殊特性。在本文中，我们报告了正在进行的Re：GRIDiT项目，该项目旨在解决上述所有要求。 Re：GRIDiT区分了可能在网格环境中分布的许多可更新副本和只读副本。首先，Re：GRIDiT提供了新的协议，可以将并发更新正确同步到不同的可更新副本，并以完全分布式的方式进行随后的传播。其次，Re：GRIDiT考虑了在Grid中管理的数据的语义：可变数据可以进行更新；反过来，不可变数据一旦创建便无法更改，但可能会受到版本控制。第三，Re：GRIDiT将是动态的，根据当前的负载，可以根据需要创建或删除新副本（可更新或只读）。第四，Re：GRIDiT将为只读事务提供完全的灵活性，以指定新鲜度（用于可变数据）或版本号（用于不可变数据），这对于在访问网格中的数据时为了提高性能的准确性而特别有用。 。

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