US 5,333,265 A · Replicated data processing method in distributed processing system

Abstract

A replicated data processing method and apparatus for a distributed processing system are provided in which a plurality of processors are connected to one another through a common transmission line. The processors perform processes using replicated data produced by resources such as files replicated in respective processors. Any processor issues an access request and broadcasts the request to the common transmission line. User's program of the processor is initiated by a first-received data in response to the request, and checks matching between the first-received data of the replicated data and the subsequently received data to repeat a retry processing for the request until a mismatch is removed.

Claims18

Dependent claims

A replicated data processing method for a distributed processing system having a plurality of processors connected to each other via a common transmission medium and information resources replicated in different processors, said method, being executed in each processor of said plurality of processors, comprising the steps of:

outputting data from said information resources in said processor to said common transmission medium;
receiving, at said processor, replicated data from said plurality of processors on said common transmission medium, said replicated data having first received replicated data and replicated data subsequently received;
performing processing using said first received replicated data beginning at a time before receipt of said replicated data subsequently received;
checking content correspondence between said first received replicated data and said replicated data subsequently received;
and
performing an abnormality processing in response to a result of said checking step indicating that a content correspondence is determined to be abnormal.

3 more elements

A replicated data processing apparatus in a distributed processing system having a plurality of processors connected to each other via a common transmission medium and information resources replicated in different processors, wherein said apparatus, being included in each processor of said plurality of processors, comprises:

an output circuit for outputting data from said information resources in said processor to said common transmission medium;
a receiving circuit for receiving, at said processor, replicated data from said plurality of processors on said common transmission medium, said replicated data having first received replicated data and replicated data subsequently received;
a processing circuit for performing processing using said first received replicated data beginning at a time before receipt of replicated data subsequently received;
a checking circuit for checking content correspondence between said first received replicated data and said replicated data subsequently received;
and
an abnormality testing circuit for performing an abnormality processing in response to a output of said checking circuit indicating that a content correspondence is determined to be abnormal.

3 more elements

Dependencies are inferred from the claim text.

Replicated data processing method in distributed processing system

Life of this patent

Replicated data processing method in distributed processing system

Life of this patent

Abstract

Claims18