计算机工程 ›› 2007, Vol. 33 ›› Issue (21): 72-74,7.doi: 10.3969/j.issn.1000-3428.2007.21.026

• 软件技术与数据库 • 上一篇    下一篇

3MDG:基于动态均衡布局的网格元数据管理模型

徐丽萍,李 珺   

  1. (华中科技大学计算机科学与技术学院,武汉 430074)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-11-05 发布日期:2007-11-05

3MDG: Grid Metadata Management Model Based on Dynamic Balanceable Placement

XU Li-ping, LI Jun   

  1. (School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074)
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-11-05 Published:2007-11-05

摘要: 通过对网格及元数据特点分析,给出了一种数据网格环境下的元数据管理模型。该模型目的在于实现分布式的元数据管理平台,负责对元数据的注册、访问及管理。通过建立元数据到存储系统的映射,用户可进行元数据资源的透明访问。为了适应网格中资源的多变性,提出改进的动态区间映射布局算法对元数据进行动态的、均衡的、可伸缩的重布局,以提高存储系统的自适应能力。

关键词: 元数据, 元数据管理, 动态区间映射, 均衡, 布局

Abstract: This paper proposes a metadata management model for data grid based on dynamic balanceable placement. The model aims to realize a distributed metadata management platform. This platform takes charge of the registry, access and management of metadata. And it implements the mapping from metadata to storage systems. So users can access to metadata resources transparently. In order to meet resource variability in the grid, the model supports a balanceable and scalable metadata placement through an improved data object placement algorithm based on dynamic interval mapping. Its purpose is to improve storage system adaptability.

Key words: metadata, metadata management, dynamic interval mapping, balanceable, placement

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