SEAMLESS DATA MIGRATION ACROSS DATABASES

摘要

Techniques are disclosed for enabling the migration of data with minimized impact on consumers of the data. A data migration agent updates pointers to active data locations and coordinates a migration from a first data resource to a second data resource so that seamless migration may be carried out. A data access layer of a distributed computing environment can take advantage of the pointers and metadata written by the data migration agent to serve requests to resources of the distributed computing environment so that read availability is available regardless of migration status.

主权项

1. A method of seamless data migration, comprising:
transferring a replica of a database partition from a source partition to a target partition while maintaining read and write properties of the source partition, wherein changes in the source partition during transfer are tracked as a source delta; disabling write operations on the source partition after the transfer of the replica is complete; applying the source delta to the target partition upon disabling the write operations on the source partition; and updating a pointer of a data locator with a direction to the target partition after applying the source delta to the target partition.