Granted Patent B2

US 12,743,294 · App. 17/852,877 · Granted Sep 22, 2026

Inventors: Vivian Qian Lee (Berkshire, GB); Lyudmil Valentinov Pelov (Hamburg, DE); Qiu Qin (Centreville, VA); Daren Race (Montara, CA)

Assignee: Oracle International Corporation

G06F9/45558

Abstract

Claims (103)

1 . A non-transitory computer readable medium comprising instructions which, when executed by one or more hardware processors, causes performance of operations comprising:

iteratively executing a plurality of jobs by sequentially transferring control of an execution process among a plurality of virtual machines that respectively and sequentially execute the plurality of jobs at least by:

executing, by a first virtual machine corresponding to a first set of computing resources, application code of a first job of the plurality of jobs;

responsive to completing execution of the application code of the first job, executing, by the first virtual machine, post-application-code wrapper code attached to the application code to determine a second job of the plurality of jobs to be executed subsequent to the first job and a second set of computing resources for executing the second job by a second virtual machine, wherein the second virtual machine executes at least a portion of the second job with the second set of computing resources after the first virtual machine self-terminates;

transferring control of the execution process from the first virtual machine to the second virtual machine at least by:

initiating, by the first virtual machine, execution of the second virtual machine to execute the second job at least by:

requesting, by the first virtual machine from a resource manager, access to the second set of computing resources for the second virtual machine; and

initiating execution of the second virtual machine with access to the second set of computing resources for executing the second job; and

subsequent to initiating execution of the second virtual machine, self-terminating the first virtual machine at least by returning the first set of computing resources to a pool of available computing resources.

2 . The non-transitory computer readable medium of claim 1 , wherein iteratively executing the plurality of jobs by the plurality of virtual machines further comprises:

executing, by the second virtual machine, application code of the second job of the plurality of jobs;

subsequent to executing, by the second virtual machine, the application code of the second job:

determining, by the second virtual machine, a third job, of the plurality of jobs, to be executed subsequent to the second job based on an ordered sequence of the plurality of jobs specified in a metadata file; and

initiating, by the second virtual machine, execution of a third virtual machine to execute the third job; and

subsequent to initiating execution of the third virtual machine, self-terminating the second virtual machine.

3 . The non-transitory computer readable medium of claim 1 , wherein iteratively executing the plurality of jobs by the plurality of virtual machines further comprises:

executing, by the second virtual machine, application code of the second job of the plurality of jobs;

subsequent to executing, by the second virtual machine, the application code of the second job:

determining that no additional jobs are to be executed subsequent to the second job based on an ordered sequence of the plurality of jobs in a metadata file; and

self-terminating the second virtual machine without executing any additional virtual machines.

4 . The non-transitory computer readable medium of claim 1 , wherein the operations further comprise:

obtaining application code corresponding to a plurality of sets of operations associated with the plurality of jobs;

obtaining a metadata file comprising an ordered sequence of the plurality of jobs; and

generating job code corresponding to the plurality of jobs at least by attaching pre-application-code wrapper code and post-application-code wrapper code to a plurality of segments of the application code corresponding, respectively, to the plurality of jobs,

wherein the pre-application-code wrapper code specifies a location of stored workflow data to be used by the plurality of jobs, and

wherein the post-application-code wrapper code specifies the second job in the ordered sequence of the plurality of jobs.

5 . The non-transitory computer readable medium of claim 1 , wherein iteratively executing the plurality of jobs comprises:

prior to executing the application code of the first job, executing pre-application-code wrapper code,

wherein executing the pre-application-code wrapper code comprises obtaining workflow data from a shared storage shared by each of the plurality of jobs;

executing the application code of the first job using the workflow data; and

subsequent to executing the application code of the first job, executing the post-application-code wrapper code,

wherein executing the post-application-code wrapper code includes storing, in the shared storage, modified workflow data, based on modifying the workflow data by executing the application code of the first job.

6 . The non-transitory computer readable medium of claim 1 , wherein initiating, by the first virtual machine, execution of the second virtual machine to execute the second job comprises:

identifying resource requirements associated with the second job based on metadata in a metadata file;

determining that the resource requirements exceed a threshold value;

responsive to determining that the resource requirements exceed the threshold value:

requesting, from the resource manager, the second set of computing resources corresponding to a first portion of the resource requirements; and

requesting, from the resource manager, a third set of computing resources corresponding to a second portion of the resource requirements,

wherein a sum of the second set of computing resources and the third set of computing resources is at least equal to the resource requirements associated with the second job; and

responsive to receiving access to the second set of computing resources and the third set of computing resources:

initiating execution of the second virtual machine; and

initiating execution of a third virtual machine.

7 . The non-transitory computer readable medium of claim 6 , wherein execution of a first portion of the second job by the second virtual machine is performed simultaneously with execution of a second portion of the second job by the third virtual machine.

8 . The non-transitory computer readable medium of claim 1 , wherein a first type of a first system resource used by the first virtual machine is different from a second type of a second system resource used by the second virtual machine.

9 . The non-transitory computer readable medium of claim 1 , wherein the operations further comprise:

determining, by the first virtual machine, resource requirements for the second job; and

requesting, by the first virtual machine, allocation of a resource for the second job based on the resource requirements.

10 . The non-transitory computer readable medium of claim 1 , wherein iteratively executing the plurality of jobs by the plurality of virtual machines comprises:

executing, by the first virtual machine, a first portion of a first set of job code to obtain the application code of the first job; and

executing, by the first virtual machine, the application code of the first job to generate first workflow data of the first job.

11 . A method comprising:

iteratively executing a plurality of jobs by sequentially transferring control of an execution process among a plurality of virtual machines that respectively and sequentially execute the plurality of jobs at least by:

executing, by a first virtual machine corresponding to a first set of computing resources, application code of a first job of the plurality of jobs;

responsive to completing execution of the application code of the first job, executing, by the first virtual machine, post-application-code wrapper code attached to the application code to determine a second job of the plurality of jobs to be executed subsequent to the first job and a second set of computing resources for executing the second job by a second virtual machine, wherein the second virtual machine executes at least a portion of the second job with the second set of computing resources after the first virtual machine self-terminates;

transferring control of the execution process from the first virtual machine to the second virtual machine at least by:

initiating, by the first virtual machine, execution of the second virtual machine to execute the second job at least by:

requesting, by the first virtual machine from a resource manager, access to the second set of computing resources for the second virtual machine; and

initiating execution of the second virtual machine with access to the second set of computing resources for executing the second job; and

subsequent to initiating execution of the second virtual machine, self-terminating the first virtual machine at least by returning the first set of computing resources to a pool of available computing resources.

12 . The method of claim 11 , wherein iteratively executing the plurality of jobs by the plurality of virtual machines further comprises:

executing, by the second virtual machine, application code of the second job of the plurality of jobs;

subsequent to executing, by the second virtual machine, the application code of the second job:

determining, by the second virtual machine, a third job, of the plurality of jobs, to be executed subsequent to the second job based on an ordered sequence of the plurality of jobs specified in a metadata file; and

initiating, by the second virtual machine, execution of a third virtual machine to execute the third job; and

subsequent to initiating execution of the third virtual machine, self-terminating the second virtual machine.

13 . The method of claim 11 , wherein iteratively executing the plurality of jobs by the plurality of virtual machines further comprises:

executing, by the second virtual machine, application code of the second job of the plurality of jobs;

subsequent to executing, by the second virtual machine, the application code of the second job:

determining that no additional jobs are to be executed subsequent to the second job based on an ordered sequence of the plurality of jobs in a metadata file; and

self-terminating the second virtual machine without executing any additional virtual machines.

14 . The method of claim 11 , further comprising:

obtaining application code corresponding to a plurality of sets of operations associated with the plurality of jobs;

obtaining a metadata file comprising an ordered sequence of the plurality of jobs; and

generating job code corresponding to the plurality of jobs at least by attaching pre-application-code wrapper code and post-application-code wrapper code to a plurality of segments of the application code corresponding, respectively, to the plurality of jobs,

wherein the pre-application-code wrapper code specifies a location of stored workflow data to be used by the plurality of jobs, and

wherein the post-application-code wrapper code specifies the second job in the ordered sequence of the plurality of jobs.

15 . The method of claim 11 , wherein iteratively executing the plurality of jobs comprises:

prior to executing the application code of the first job, executing pre-application-code wrapper code,

wherein executing the pre-application-code wrapper code comprises obtaining workflow data from a shared storage shared by each of the plurality of jobs;

executing the application code of the first job using the workflow data; and

subsequent to executing the application code of the first job, executing the post-application-code wrapper code,

wherein executing the post-application-code wrapper code includes storing, in the shared storage, modified workflow data, based on modifying the workflow data by executing the application code of the first job.

16 . The method of claim 11 , wherein initiating, by the first virtual machine, execution of the second virtual machine to execute the second job comprises:

identifying resource requirements associated with the second job based on metadata in a metadata file;

determining that the resource requirements exceed a threshold value;

responsive to determining that the resource requirements exceed the threshold value:

requesting, from the resource manager, the second set of computing resources corresponding to a first portion of the resource requirements; and

requesting, from the resource manager, a third set of computing resources corresponding to a second portion of the resource requirements,

wherein a sum of the second set of computing resources and the third set of computing resources is at least equal to the resource requirements associated with the second job; and

responsive to receiving access to the second set of computing resources and the third set of computing resources:

initiating execution of the second virtual machine; and

initiating execution of a third virtual machine.

17 . A system comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the system to perform:

iteratively executing a plurality of jobs by sequentially transferring control of an execution process among a plurality of virtual machines that respectively and sequentially execute the plurality of jobs at least by:

executing, by a first virtual machine corresponding to a first set of computing resources, application code of a first job of the plurality of jobs;

responsive to completing execution of the application code of the first job, executing, by the first virtual machine, post-application-code wrapper code attached to the application code to determine a second job of the plurality of jobs to be executed subsequent to the first job and a second set of computing resources for executing the second job by a second virtual machine, wherein the second virtual machine executes at least a portion of the second job with the second set of computing resources after the first virtual machine self-terminates;

transferring control of the execution process from the first virtual machine to the second virtual machine at least by:

initiating, by the first virtual machine, execution of the second virtual machine to execute the second job at least by:

requesting, by the first virtual machine from a resource manager, access to the second set of computing resources for the second virtual machine; and

initiating execution of the second virtual machine with access to the second set of computing resources for executing the second job; and

subsequent to initiating execution of the second virtual machine, self-terminating the first virtual machine at least by returning the first set of computing resources to a pool of available computing resources.

Assignments (3)

Continuity (1)

References Cited (36)