公开(公告)号：US20130117307A1

公开(公告)日：2013-05-09

申请号：US13309603

申请日：2011-12-02

Applicant: Surendra Kumar VISHNOI ,  Colin FLORENDO

Inventor： Surendra Kumar VISHNOI ,  Colin FLORENDO

IPC: G06F17/30

CPC classification number: G06F17/30362

Abstract: System, method, computer program product embodiments and combinations and sub-combinations thereof for snapshot isolation support for distributed query processing in a shared disk database cluster are provided. The embodiments include the forming of object identification data in a leader node of query execution in the shared disk database cluster. At least one fragment of the query execution is distributed to at least one worker node in the shared disk database cluster, and the object identification data is utilized for multiversion concurrency control during query execution by the leader node and at least one worker node.

Abstract translation: 提供了用于共享磁盘数据库集群中的分布式查询处理的快照隔离支持的系统，方法，计算机程序产品实施例及其组合和子组合。 实施例包括在共享磁盘数据库集群中的查询执行的前导节点中形成对象标识数据。 查询执行的至少一个片段被分发到共享磁盘数据库集群中的至少一个工作节点，并且对象标识数据被用于在由前导节点和至少一个工作节点执行查询期间的多版本并发控制。