Invention Grant
US08774057B2 Query execution and optimization with autonomic error recovery from network failures in a parallel computer system with multiple networks 失效
在具有多个网络的并行计算机系统中的网络故障自动错误恢复的查询执行和优化

Query execution and optimization with autonomic error recovery from network failures in a parallel computer system with multiple networks
Abstract:
A database query execution monitor determines if an network error or low performance condition exists and then where possible modifies the query. The query execution monitor then determines an alternate query execution plan to continue execution of the query. The query optimizer can re-optimize the query to use a different network or node. Thus, the query execution monitor allows autonomic error recovery for network failures using an alternate query execution. The alternate query execution could also be determined at the initial optimization time and then this alternate plan used to execute a query in the case of a particular network failure.
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