Thomas F Harwood

US Patent:

20220237166, Jul 28, 2022

Filed:

Apr 14, 2022

Appl. No.:

17/721142

Inventors:

- Waltham MA, US
Oleg Levin - Acton MA, US
Yan Avlasov - Lexington MA, US
Seth Theodore Proctor - Arlington MA, US
Thomas Jonathan Harwood - Concord MA, US

Assignee:

NuoDB, Inc. - Waltham MA

International Classification:

G06F 16/22
G06F 16/27

Abstract:

Techniques are disclosed for implementing a unified partitioning scheme within distributed database systems to allow a table to be horizontally partitioned and those partitions stored on and serviced by a storage group. A storage group is a subset of storage manager (SM) nodes, and each SM node is configured to persist database data in durable storage. The distributed database system assigns each storage group to a subset of SM nodes. The distributed database system can address each storage group using a symbolic mapping that allows transactions to identify a particular storage group, and to direct read and write operations to a subset of SM nodes servicing that storage group. An administrator can update this mapping on-the-fly to cause the distributed database system to dynamically adjust an implemented partitioning scheme without necessarily interrupting on-going database operations.

US Patent:

20180357264, Dec 13, 2018

Filed:

Aug 3, 2018

Appl. No.:

16/054357

Inventors:

- Cambridge MA, US
Oleg Levin - Acton MA, US
Yan Avlasov - Lexington MA, US
Seth Theodore Proctor - Arlington MA, US
Thomas Jonathan Harwood - Concord MA, US

International Classification:

G06F 17/30

Abstract:

Techniques are disclosed for implementing a unified partitioning scheme within distributed database systems to allow a table to be horizontally partitioned and those partitions stored on and serviced by a storage group. A storage group is a subset of storage manager (SM) nodes, and each SM node is configured to persist database data in durable storage. The distributed database system assigns each storage group to a subset of SM nodes. The distributed database system can address each storage group using a symbolic mapping that allows transactions to identify a particular storage group, and to direct read and write operations to a subset of SM nodes servicing that storage group. An administrator can update this mapping on-the-fly to cause the distributed database system to dynamically adjust an implemented partitioning scheme without necessarily interrupting on-going database operations.

US Patent:

20160350392, Dec 1, 2016

Filed:

May 29, 2015

Appl. No.:

14/725916

Inventors:

- Cambridge MA, US
Oleg Levin - Acton MA, US
Yan Avlasov - Lexington MA, US
Seth Theodore Proctor - Arlington MA, US
Thomas Jonathan Harwood - Concord MA, US

Assignee:

NuoDB, INC. - Cambridge MA

International Classification:

G06F 17/30

Abstract:

Techniques are disclosed for implementing a unified partitioning scheme within distributed database systems to allow a table to be horizontally partitioned and those partitions stored on and serviced by a storage group. A storage group is a subset of storage manager (SM) nodes, and each SM node is configured to persist database data in durable storage. The distributed database system assigns each storage group to a subset of SM nodes. The distributed database system can address each storage group using a symbolic mapping that allows transactions to identify a particular storage group, and to direct read and write operations to a subset of SM nodes servicing that storage group. An administrator can update this mapping on-the-fly to cause the distributed database system to dynamically adjust an implemented partitioning scheme without necessarily interrupting on-going database operations.