公开(公告)号：US20230009909A1

公开(公告)日：2023-01-12

申请号：US17856171

申请日：2022-07-01

Applicant: MongoDB, Inc.

Inventor： Mark Porter ,  Max Jacob Hirschhom ,  Daniel William Gottlied ,  Garaudy Etienne ,  Andrew Michalski Schwerin ,  Judah Schvimer ,  Siyuan Zhou ,  Kaloian Manassiev ,  Esha Maharishi

IPC: G06F16/27 ,  G06F16/28

Abstract: A method is provided for resharding a sharded database sharded according to a first shard key. The method includes: receiving, by a processor an instruction to reshard the sharded database; receiving, at the processor, a new shard key to be used in a resharding process to reshard the sharded database; determining, by the processor, whether a duration of unavailability of the sharded database during the resharding process is less than a predetermined amount of time; and automatically performing, by the processor, the resharding process according to the new shard key to produce a resharded database, if the duration of unavailability is less than the predetermined amount of time. The method may be performed without users noticing a significant interruption to read/write operations from/to the database.