TRANSACTIONAL UPDATING IN DYNAMIC DISTRIBUTED WORKLOADS

• US 20120284723A1
• Filed: 12/23/2010
• Published: 11/08/2012
• Est. Priority Date: 01/11/2010
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Johnson, Paul, Burgess, George M., Mitchell, Ian J.
• Granted Patent: US 9,244,722 B2
• Time in Patent Office: Days
• US Class Current: 718/101
• CPC Class Codes: G06F 11/2033 switching over of hardware resources
• CPC Class Codes: G06F 9/466 Transaction processing
• CPC Class Codes: G06F 9/5033 considering data affinity

Abstract

A workload manager is operable with a distributed transaction processor having a plurality of processing regions and comprises: a transaction initiator region for initiating a transaction; a transaction router component for routing an initiated transaction to one of the plurality of processing regions; an affinity controller component for restricting transaction routing operations to maintain affinities; the affinity controller component characterised in comprising a unit of work affinity component operable with a resource manager at the one of the plurality of processing regions to activate an affinity responsive to completion of a recoverable data operation at the one of the plurality of processing regions.

Claims

1. A workload manager operable with a distributed transaction processor having a plurality of processing regions and comprising:

a transaction initiator region for initiating a transaction;

a transaction router component for routing an initiated transaction to one of said plurality of processing regions; and

an affinity controller component for restricting transaction routing operations to maintain affinities;

said affinity controller component characterised in comprising a unit of work affinity component operable with a resource manager at said one of said plurality of processing regions to activate an affinity responsive to completion of a recoverable data operation at said one of said plurality of processing regions.

2. A workload manager as claimed in claim 1, said unit of work affinity component further operable to permit said transaction router component to reroute a transaction to a different one of said plurality of processing regions responsive to an indication of lack of completion of a recoverable data operation at said one of said plurality of processing regions.

3. A workload manager as claimed in claim 2, wherein said lack of completion of a recoverable data operation at said one of said plurality of processing regions is associated with a routing rejection or an abnormal transaction termination.

4. A workload manager as claimed in claim 1, wherein said distributed transaction processor comprises an online transaction processing system.

5. A workload manager as claimed in claim 1, wherein said distributed transaction processor comprises a transactional database system.

6. A method for operating a workload manager with a distributed transaction processor having a plurality of processing regions and comprising:

initiating a transaction by a transaction initiator region;

routing an initiated transaction by a transaction router component to one of said plurality of processing regions;

restricting transaction routing operations by an affinity controller component to maintain affinities; and

activating an affinity responsive to completion of a recoverable data operation at said one of said plurality of processing regions.

7. A method as claimed in claim 6, further comprising operating said unit of work affinity component to permit rerouting a transaction to a different one of said plurality of processing regions responsive to an indication of lack of completion of a recoverable data operation at said one of said plurality of processing regions.

8. A method as claimed in claim 7, wherein said lack of completion of a recoverable data operation at said one of said plurality of processing regions is associated with a routing rejection or an abnormal transaction termination.

9. A method as claimed in claim 6, wherein said distributed transaction processor comprises an online transaction processing system.

10. A method as claimed in claim 6, wherein said distributed transaction processor comprises a transactional database system.

11. (canceled)

12. A computer program product for operating a workload manager with a distributed transaction processor having a plurality of processing regions, the computer program product comprising a computer readable storage medium having program code embodied therewith, the program code executable by a processor to perform a method comprising:

initiating a transaction by a transaction initiator region;

routing an initiated transaction by a transaction router component to one of said plurality of processing regions;

restricting transaction routing operations by an affinity controller component to maintain affinities; and

activating an affinity responsive to completion of a recoverable data operation at said one of said plurality of processing regions.

13. A computer program product as claimed in claim 12, wherein the method further comprises:

operating said unit of work affinity component to permit rerouting a transaction to a different one of said plurality of processing regions responsive to an indication of lack of completion of a recoverable data operation at said one of said plurality of processing regions.

14. A computer program product as claimed in claim 13, wherein said lack of completion of a recoverable data operation at said one of said plurality of processing regions is associated with a routing rejection or an abnormal transaction termination.

15. A computer program product as claimed in claim 12, wherein said distributed transaction processor comprises an online transaction processing system.

16. A method as claimed in claim 12, wherein said distributed transaction processor comprises a transactional database system.