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Grid Data Management (WP2)

Grid Data Management (WP2). William Bell University of Glasgow. Overview. Introducing WP2 Query Optimisation Meta Data Services Statements and Future Work. EU Data Grid. Query Optimisation. W. H. Bell 1 , D. G. Cameron 1 , L. Capozza 2 , M. Carman 2 ,

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Grid Data Management (WP2)

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  1. Grid Data Management (WP2) William Bell University of Glasgow Data Grid Management (WP2) W. H. Bell

  2. Overview • Introducing WP2 • Query Optimisation • Meta Data Services • Statements and Future Work Data Grid Management (WP2) W. H. Bell

  3. EU Data Grid Data Grid Management (WP2) W. H. Bell

  4. Query Optimisation W. H. Bell1, D. G. Cameron1, L. Capozza2, M. Carman2, G. McCance1, P. Millar1, L. Serafini2, K. Stockinger3, F. Zini2 1 University of Glasgow, Glasgow, G12 8QQ, Scotland 2 ITC-irst, Via Sommarive 18, 38050 Povo (Trento), Italy 3 CERN, Geneva, Switzerland Data Grid Management (WP2) W. H. Bell

  5. Query Optimisation • Local minimisation of execution time by replica selection. • Two phase minimisation • RB selects CE based speculative cost • Job contacts RM (RO), and pins file Data Grid Management (WP2) W. H. Bell

  6. Query Optimisation Data Grid Management (WP2) W. H. Bell

  7. Economic Model Data Grid Management (WP2) W. H. Bell

  8. Meta Data Service W. H. Bell1, L. Guy2, P. Kunszt2, G. McCance1 1 University of Glasgow, Glasgow, G12 8QQ, Scotland 2 CERN, Geneva, Switzerland Data Grid Management (WP2) W. H. Bell

  9. Meta Data Service • Different from Existing Spitfire • Scrap XSQL, allow administrator access • No templates needed • Implementation • Compartmentalised: Servlets (Use in WP3) • Provide generic support for RDBs • Pickup security concepts from Spitfire Data Grid Management (WP2) W. H. Bell

  10. Meta Data Service • Provide Generic RDB Access • User Access via HTTPS • Decode XML with WSDL/Soap • Security Servlet Maps Roles • Command Translator • From generic to specific • Backend Types • Oracle, PostgreSQL, MySQL Data Grid Management (WP2) W. H. Bell

  11. Statments and Future Work • Query Optimisation • API document in final stages of discussion • First release of code in May. • Simulation platform under construction • Meta Data Services • API document nearing completion • Coding starts soon. Data Grid Management (WP2) W. H. Bell

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