Method and system for replicated and consistent modifications in

Details Method and system for replicated and consistent modifications in Method and system for replicated and consistent modifications in

1998-04-17

2000-12-19

Iqbal, Nadeem

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

39520038, G06F 1100

Patent

active

061638552

ABSTRACT:
A method and system for communicating modification information to servers in a server cluster. Local changes, such as modifications to a resource requested at one node, are associated into a single transaction. A master node, such as the node that owns the set of resources corresponding to the modifications in the transaction requests permission from a locker node to replicate the transaction. When permission to replicate the transaction is received from the locker node, the master node replicates the transaction by requesting each node in the cluster, one node at a time, to commit the transaction. Any node that does not commit the transaction is removed from the cluster, ensuring consistency of the cluster. Failure conditions of any node or nodes are also handled in a manner that ensures consistency.

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