Dynamic reassignment of data ownership

G - Physics – 06 – F

Patent

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Details

G06F 9/46 (2006.01)

Patent

CA 2532058

Various techniques are described for improving the performance of a shared- nothing database system in which at least two of the nodes that are running the shared-nothing database system have shared access to a disk. Specifically, techniques are provided for changing the ownership of data in a shared-nothing database dynamically, based on factors such as which node would be the most efficient owner relative to the performance of a particular operation. Once determined, the ownership of the data may be changed permanently to the new owner, or temporarily for the duration of the particular operation.

La présente invention se rapporte à diverses techniques permettant d'améliorer les performances d'un système base de données ne partageant rien, dans lequel au moins deux des noeuds sur lesquels fonctionne ce système base de données ne partageant rien possèdent un accès partagé à un disque. Spécifiquement, l'invention concerne des techniques permettant de changer dynamiquement la propriété de données dans une base de données ne partageant rien, sur la base de facteurs indiquant par exemple quel noeud s'avérerait le propriétaire le plus efficace relativement aux performances d'une opération particulière. Une fois déterminée, la propriété des données peut être changée de manière permanente au profit du nouveau propriétaire, ou temporairement pendant la durée de l'opération particulière.

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