Invention Application
- Patent Title: METHOD AND SYSTEM FOR UNIFORM, CONSISTENT, STATELESS AND DETERMINISTIC CONSISTENT HASHING FOR FIXED SIZE PARTITIONS
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Application No.: US16567473Application Date: 2019-09-11
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Publication No.: US20210073043A1Publication Date: 2021-03-11
- Inventor: Ivan Skuliber , Dennis P. Mathew , Michael A. Bellomo
- Applicant: Synchronoss Technologies, Inc.
- Applicant Address: US NJ Bridgewater
- Assignee: Synchronoss Technologies, Inc.
- Current Assignee: Synchronoss Technologies, Inc.
- Current Assignee Address: US NJ Bridgewater
- Main IPC: G06F9/50
- IPC: G06F9/50 ; G06F3/06

Abstract:
A computer implemented method and system for uniform, consistent, stateless, and deterministic consistent hashing for fixed size partitions. The method comprises receiving server information for a plurality of servers in a server pool; ordering the server information for the plurality of servers; calculating a mean number of partitions per server in the server pool; calculating a first maximum allowed number of partitions for a server by applying a floor function to the calculated mean number of partitions per server in the server pool; in the order of the ordered server information, assigning partitions to servers based on a hashing function, using the first maximum allowed number of partitions per server; calculating a second maximum allowed number of partitions for a server by applying a ceiling function to the calculated mean number of partitions per server in the server pool; in the order of the ordered server information, assigning partitions to servers based on a hashing function, using the second maximum allowed number of partitions per server; and assigning unassigned partitions wherein assigning comprises: for each unassigned partition, mapping the partition to a server with the least number of assigned partitions at a time of the mapping.
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