LIVE MIGRATION OF DISTRIBUTED DATABASES
First Claim
1. A method, comprising:
- implementing, by a processing device, a first intermediate database access mode with respect to a distributed database to be migrated from an original set of storage servers to a destination set of storage servers, wherein, in the first database access mode, database read requests are routed to the original set of storage servers and database update requests are routed to both the original set of storage servers and the destination set of storage servers;
copying, while operating in the first intermediate database access mode, a plurality of records of the distributed database from the original set of storage servers to the destination set of storage servers;
switching, by the processing device, to a second intermediate database access mode, in which database read requests are routed to the destination set of storage servers and database update requests are routed to both the original set of storage servers and the destination set of storage servers; and
switching, by the processing device, to a post-migration database access mode, in which database read and update requests are routed to the destination set of storage servers.
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Accused Products
Abstract
An example method of live migration of distributed databases may include implementing a first intermediate database access mode with respect to a distributed database to be migrated from an original set of storage servers to a destination set of storage servers, wherein, in the first database access mode, database read requests are routed to the original set of storage servers and database update requests are routed to both the original set of storage servers and the destination set of storage servers. The method may further include copying a plurality of records of the distributed database from the original set of storage servers to the destination set of storage servers. The method may further include switching to a second intermediate database access mode, in which database read requests are routed to the destination set of storage servers and database update requests are routed to both the original set of storage servers and the destination set of storage servers. The method may further include switching to a post-migration database access mode, in which database read and update requests are routed to the destination set of storage servers.
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Citations
20 Claims
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1. A method, comprising:
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implementing, by a processing device, a first intermediate database access mode with respect to a distributed database to be migrated from an original set of storage servers to a destination set of storage servers, wherein, in the first database access mode, database read requests are routed to the original set of storage servers and database update requests are routed to both the original set of storage servers and the destination set of storage servers; copying, while operating in the first intermediate database access mode, a plurality of records of the distributed database from the original set of storage servers to the destination set of storage servers; switching, by the processing device, to a second intermediate database access mode, in which database read requests are routed to the destination set of storage servers and database update requests are routed to both the original set of storage servers and the destination set of storage servers; and switching, by the processing device, to a post-migration database access mode, in which database read and update requests are routed to the destination set of storage servers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system, comprising:
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a memory to store a distributed database configuration; a processing device, operatively coupled to the memory, the processing device to; implement a first intermediate database access mode with respect to a distributed database to be migrated from an original set of storage servers to a destination set of storage servers, wherein, in the first database access mode, database read requests are routed to the original set of storage servers and database update requests are routed, based on the distributed database configuration, to both the original set of storage servers and the destination set of storage servers; copy, while operating in the first intermediate database access mode, a plurality of records of the distributed database from the original set of storage servers to the destination set of storage servers; switch to a second intermediate database access mode, in which database read requests are routed to the destination set of storage servers and database update requests are routed to both the original set of storage servers and the destination set of storage servers; and switch to a post-migration database access mode, in which database read and update requests are routed to the destination set of storage servers. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A computer-readable non-transitory storage medium comprising executable instructions that, when executed by a processing device, cause the processing device to:
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implement, by the processing device, a first intermediate database access mode with respect to a distributed database to be migrated from an original set of storage servers to a destination set of storage servers, wherein, in the first database access mode, database read requests are routed to the original set of storage servers and database update requests are routed to both the original set of storage servers and the destination set of storage servers; copy, while operating in the first intermediate database access mode, a plurality of records of the distributed database from the original set of storage servers to the destination set of storage servers; switch, by the processing device, to a second intermediate database access mode, in which database read requests are routed to the destination set of storage servers and database update requests are routed to both the original set of storage servers and the destination set of storage servers; and switch, by the processing device, to a post-migration database access mode, in which database read and update requests are routed to the destination set of storage servers - View Dependent Claims (18, 19, 20)
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Specification