Grid quorum
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Alteeve Wiki :: Grid quorum |
A Grid Quorum system is one where the nodes (n) in the cluster are arranged in an k^2 arrangement. Quorum is determined by having all nodes in one horizontal row plus at least one node from each row below it.
Here is an example of a 25-node cluster in a 5 x 5 grid;
| 01 | 02 | 03 | 04 | 05 |
| 06 | 07 | 08 | 09 | 10 |
| 11 | 12 | 13 | 14 | 15 |
| 16 | 17 | 18 | 19 | 20 |
| 21 | 22 | 23 | 24 | 25 |
An example of this grid having quorum would be votes from;
| 01 | 02 | 03 | 04 | 05 |
| 06 | 07 | 08 | 09 | 10 |
|---|---|---|---|---|
| 11 | 12 | 13 | 14 | 15 |
| 16 | 17 | 18 | 19 | 20 |
| 21 | 22 | 23 | 24 | 25 |
To learn more, please see:
- Principles of Distributed Computing (pdf) by Christian Cachin.
- The Quorum Deployment Problem (ppt) by Seth Gilbert and Grzegorz Malewicz.
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