发明名称 |
SYSTEM AND METHOD FOR AGGREGATING QUERY RESULTS IN A FAULT-TOLERANT DATABASE MANAGEMENT SYSTEM |
摘要 |
A redundant array of independent nodes are networked together. Each node executes an instance of an application that provides object-based storage. Metadata objects are stored in a set of regions distributed among the nodes across the array. A given region is identified by hashing a metadata object attribute and extracting a given set of bits of a resulting hash value. A method of managing query results comprises: receiving, by a first node of the plurality of independent nodes from a client application, a request for a list of objects with a criterion; issuing by the first node a query to all the nodes based on the received request; processing the query by each node over the regions in the node using the metadata objects stored in the regions; aggregating and filtering by the first node results of the query from all the nodes; and returning by the first node the aggregated and filtered results to the client application. |
申请公布号 |
US2012078881(A1) |
申请公布日期 |
2012.03.29 |
申请号 |
US20100889574 |
申请日期 |
2010.09.24 |
申请人 |
CRUMP JEFFREY M.;IOAKIMIDIS MARGIE E.;HITACHI DATA SYSTEMS CORPORATION |
发明人 |
CRUMP JEFFREY M.;IOAKIMIDIS MARGIE E. |
分类号 |
G06F17/30 |
主分类号 |
G06F17/30 |
代理机构 |
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