Method for distributedly processing a plurality of jobs in a data processing system
AssigneeHitachi, Ltd.
InventorTadashi Yamagishi
Life of this patent
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Abstract
A method of reading data of the same file by a plurality of jobs in a shared manner which, when one of the jobs issues a read request to read data sequentially stored in the file beginning at a first position thereof, acquires a minimum record number of a record of the file which has not yet been read. The contents of the record having the minimum record number are passed to the job which issued the read request. With this configuration, data of one file can be processed by a plurality of jobs in a shared fashion and the processing load is shared by the jobs.
Claims5
A method of reading data of one file by a plurality of jobs in a shared fashion, comprising:
- a step of relating the plurality of lobs which read the file with each other;
- a step of acquiring, in response to a read request issued from one of the related jobs to read data sequentially stored in the file beginning at a first position thereof, a minimum record number of a record of the file, which has not been read therefrom;
- a step of passing contents of the record having the acquired minimum record number to the read-requesting job;
- and
- a step of, in response to a request of reading by the others of said related jobs, repeating said acquiring step and said reading step until reading of all of the records from said file is terminated.
Dependencies are inferred from the claim text.