Handling failed cluster members when replicating a database between clusters

摘要

Data integrity is maintained during failed communications between a member node of a primary cluster and a backup cluster by assigning an assisting member node to run an assisting process that transmits data entered into the member node to the backup cluster. In this way, a replicated database is maintained during a partial communication failure between the primary cluster and the backup cluster.

主权项

1. A method comprising:
sending, by a first node in a first cluster to a first node in a second cluster, at least a portion of a set of logs; detecting a communication failure condition with respect to the sending of the set of logs; responsive to detection of the communication failure condition, determining an assisting node which is in the first cluster; and responsive to determination of the assisting node, sending, by the assisting node in the first cluster to the first node in the second cluster, at least a portion of the set of logs; wherein: the set of logs relate to physical database replication among shared disk database systems.