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1. (WO2018024075) SYSTEM AND METHOD FOR DATA REDISTRIBUTION IN DATABASE

Pub. No.:    WO/2018/024075    International Application No.:    PCT/CN2017/092027
Publication Date: Fri Feb 09 00:59:59 CET 2018 International Filing Date: Fri Jul 07 01:59:59 CEST 2017
IPC: G06F 17/30
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
Inventors: CAI, Le
ZHOU, Qingqing
SUN, Yang
Title: SYSTEM AND METHOD FOR DATA REDISTRIBUTION IN DATABASE
Abstract:
A method for data redistribution of a job data in a first datanode (DN) to at least one additional DN in a Massively Parallel Processing (MPP) Database (DB) is provided. The method includes recording a snapshot of the job data, creating a first data portion in the first DN and a redistribution data portion in the first DN, collecting changes to a job data copy stored in a temporary table, and initiating transfer of the redistribution data portion to the at least one additional DN.