The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 06, 2023
Filed:
Dec. 14, 2021
Yuk Kuen Chan, Markham, CA;
Ronen Grosman, Markham, CA;
Seyyed Mohammad Hadi Sajjadpour, Markham, CA;
Hoi Leng Lao, Markham, CA;
Wen Hao Zhang, Scarborough, CA;
Chung Yin Alan Wong, Toronto, CA;
Yuk Kuen Chan, Markham, CA;
Ronen Grosman, Markham, CA;
Seyyed Mohammad Hadi Sajjadpour, Markham, CA;
Hoi leng Lao, Markham, CA;
Wen Hao Zhang, Scarborough, CA;
Chung Yin Alan Wong, Toronto, CA;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A method and system of processing database transactions in a distributed online transaction processing (OLTP) database is provided. Overhead and network bandwidth associated with a global transaction manager are reduced and scalability improved by determining whether incoming statements are single-shard or multi-shard. For single-shard statements, a local transaction identifier (TXID) stored and associated with a data record reference by the statement is retrieved. The retrieved TXID is compared against a copy of a list of prepared transactions that are pending in a respective data node. If the TXID is in the copy of the prepared list, the statement is caused to await until the previous transaction has been committed or aborted. The visibility of a change committed by the previous is then determined, and the statement is processed.