Data processing lock signal transmission

摘要

In accordance with one aspect of the present description, a node of the distributed computing system has multiple communication paths to a data processing resource lock which controls access to shared resources, for example. In this manner, at least one redundant communication path is provided between a node and a data processing resource lock to facilitate reliable transmission of data processing resource lock signals between the node and the data processing resource lock. Other features and aspects may be realized, depending upon the particular application.

主权项

1. A computer implemented method, comprising:
under control of a first data processing unit,
transmitting by a first data processing unit over a first communication path to a data processing lock device, a first request to be granted a data processing lock,prior to determining that a communication failure has occurred over the first communication path in connection with the transmission of the first request; transmitting by said first data processing unit over a second communication path to the data processing lock device, a second request to be granted the data processing lock; anddetermining whether the data processing lock was obtained by the first data processing unit in response to either of said transmissions of the first and second requests to be granted the data processing lock; anddetermining whether communication failures occurred over both said first and second communication paths in connection with said transmissions of the first and second requests, respectively.