PARALLEL EXECUTION OF RANGE QUERY
    1.
    发明申请
    PARALLEL EXECUTION OF RANGE QUERY 审中-公开
    并行执行范围查询

    公开(公告)号:US20100082655A1

    公开(公告)日:2010-04-01

    申请号:US12241765

    申请日:2008-09-30

    IPC分类号: G06F7/06 G06F17/30

    CPC分类号: G06F16/2455

    摘要: A method comprises receiving a range query from a requestor. The range query requests a range of sequential items in a database that is distributed among a plurality of storage devices or partitions. The range query is divided into R sub-range queries, where R is an integer. Each sub-range query corresponds to a respective portion of the range of sequential items stored in a respective storage device or partition. The sub-range queries are issued to respective ones of up to K storage servers, where K is an integer less than or equal to R. Each of the K storage servers is configured with read access to the respective storage device or partition storing the respective portion of the range of sequential items in the respective sub-range query issued to that storage server.

    摘要翻译: 一种方法包括从请求者接收范围查询。 范围查询请求分布在多个存储设备或分区之间的数据库中的一系列顺序项目。 范围查询分为R子范围查询,其中R为整数。 每个子范围查询对应于存储在相应的存储设备或分区中的顺序项目的范围的相应部分。 子范围查询被发布到多达K个存储服务器中的相应的K存储服务器,其中K是小于或等于R的整数.K个存储服务器中的每个存储服务器配置有对存储相应的存储设备或分区 发出到该存储服务器的相应子范围查询中的顺序项目范围的一部分。