分布式并行数据库系统中节点信息的动态管理和维护

Dynamic management and maintenance of node information in distributed and parallel database system

针对分布式并行数据库系统DPSQL中节点状态变化的随机性和不可预测性,提出节点管理和维护的动态解决方案。该方案通过在DPSQL运行过程中对活动节点信息表正确性和一致性的维护实现,保证了各服务器节点间通信的正确性和节点内部各子系统间的默契配合,从而保证了DPSQL的高效服务。

Aiming at the randomicity and unpredictability of the change of node-state in distributed and parallel database system DPSQL, the dynamic scheme was put forward to handle the management and maintenance of the node information. The scheme was implemented on the basis of the correctness and consistency of the information table where every active node-state was written and refreshed on time. This ensured the correspondence of all server nodes and the cooperation of inner subsystem in each node. Consequently, it ensured the effective service of DPSQL.