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Workload aware data placement for join-based query processing in a cluster

机译:在集群中基于工作量的数据放置以用于基于联接的查询处理

摘要

A method for distributing tables to a cluster of nodes managed by database management system (DBMS), is disclosed. Multiple data placement schemes are evaluated based on a query workload set to select a data placement scheme for the cluster of nodes. Tables, used in join operations in the workload set, are selected for evaluation of data placement schemes. Query execution costs for the workload set are generated based on estimating a query execution cost for each data placement scheme for the tables. The data placement scheme that has least costly estimated execution cost for the workload set is selected as the data placement scheme for the cluster of nodes managed by DBMS.
机译:公开了一种用于将表分配给由数据库管理系统(DBMS)管理的节点的集群的方法。基于查询工作负载集评估多个数据放置方案,以为节点集群选择数据放置方案。选择在工作负荷集中的联接操作中使用的表,以评估数据放置方案。基于估计表的每个数据放置方案的查询执行成本,来生成工作负载集的查询执行成本。选择工作负载集的估计执行成本成本最低的数据放置方案作为DBMS管理的节点集群的数据放置方案。

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