Dell Products Inc.

Xuhui Yang

Pan Xiao

Helen Hailan Dong

Renyuan Tong

Data replication is described. An example method includes determining an aging degree of a first-type storage disk in a source storage device and determining a transmission time length for replicating target data from a second-type storage disk in the source storage device to a destination storage device, wherein the target data is stored in the second-type storage disk in the source storage device. Based on the transmission time length and the aging degree, it can be determined to migrate the target data from the second-type storage disk to the first-type storage disk, and, accordingly, the target data can be replicated from the first-type storage disk in the source storage device to the destination storage device. The data replication of the described technology can significantly improve data replication efficiency, and reduce the possibility of data loss, thereby significantly improving the performance of a storage system.

Method, electronic device, and computer program product for data replication

A load balancing method for use in conjunction with an application or service provided by a distributed computing system may begin by electing, from a group of participants, a leader for each of a plurality of tasks associated with the application or service. Responsive to detecting a signal or some other indication to run a particular task, the elected leader of the particular task may delegate responsibility to run the particular task to a particular participant. The particular participant, upon subsequently discovering that responsibility for the particular task has been delegated to it, responds by running the particular task. In some embodiments, the elected leader for a task may delegate responsibility for running the task to a least-loaded participant.

Load balancing with multi-leader election and leadership delegation

An apparatus in an illustrative embodiment comprises at least one processing device that includes a processor coupled to a memory. The at least one processing device is configured to establish with a coordination service for one or more distributed applications a participant identifier for a given participant in a multi-leader election algorithm implemented in a distributed computing system comprising multiple compute nodes, the compute nodes corresponding to participants having respective participant identifiers, and to interact with the coordination service in performing an iteration of the multi-leader election algorithm to determine a current assignment of respective ones of the participants as leaders for respective processing tasks of the distributed computing system. In some embodiments, the at least one processing device comprises at least a portion of a particular one of the compute nodes of the distributed computing system, and the coordination service comprises one or more external servers.

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Chengdu, China

Xuhui Yang