Why distributed election protocol choose “half of participants” as a threshold?
In distributed election protocols or consistency models, we normally choose "If half of participants acknowledge, then confirm it", what confused me is that why we choose "half" as a threshold, but not 2/5, 1/3? Or it's just from experience?
distribution distributed-system consistency
asked Nov 14 '18 at 6:53
SimonCqk
2016
add a comment |
In distributed election protocols or consistency models, we normally choose "If half of participants acknowledge, then confirm it", what confused me is that why we choose "half" as a threshold, but not 2/5, 1/3? Or it's just from experience?
distribution distributed-system consistency
asked Nov 14 '18 at 6:53
SimonCqk
2016
Because if at least half needs to agree on a decision, there can be at most one decision made. In a system where only1/3is needed you could end up with a system partitioned in such a way that you have 3 equally valid but conflicting outcomes
– Mathias R. Jessen
Nov 14 '18 at 7:04
add a comment |
In distributed election protocols or consistency models, we normally choose "If half of participants acknowledge, then confirm it", what confused me is that why we choose "half" as a threshold, but not 2/5, 1/3? Or it's just from experience?
distribution distributed-system consistency
asked Nov 14 '18 at 6:53
SimonCqk
2016
In distributed election protocols or consistency models, we normally choose "If half of participants acknowledge, then confirm it", what confused me is that why we choose "half" as a threshold, but not 2/5, 1/3? Or it's just from experience?
distribution distributed-system consistency
distribution distributed-system consistency
asked Nov 14 '18 at 6:53
SimonCqk
2016
asked Nov 14 '18 at 6:53
SimonCqk
2016
asked Nov 14 '18 at 6:53
SimonCqk
2016
asked Nov 14 '18 at 6:53
SimonCqk
2016
asked Nov 14 '18 at 6:53
SimonCqk
2016
2016
Because if at least half needs to agree on a decision, there can be at most one decision made. In a system where only1/3is needed you could end up with a system partitioned in such a way that you have 3 equally valid but conflicting outcomes
– Mathias R. Jessen
Nov 14 '18 at 7:04
add a comment |
Because if at least half needs to agree on a decision, there can be at most one decision made. In a system where only1/3is needed you could end up with a system partitioned in such a way that you have 3 equally valid but conflicting outcomes
– Mathias R. Jessen
Nov 14 '18 at 7:04
Because if at least half needs to agree on a decision, there can be at most one decision made. In a system where only
1/3 is needed you could end up with a system partitioned in such a way that you have 3 equally valid but conflicting outcomes– Mathias R. Jessen
Nov 14 '18 at 7:04
Because if at least half needs to agree on a decision, there can be at most one decision made. In a system where only
1/3 is needed you could end up with a system partitioned in such a way that you have 3 equally valid but conflicting outcomes– Mathias R. Jessen
Nov 14 '18 at 7:04
add a comment |
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Because if at least half needs to agree on a decision, there can be at most one decision made. In a system where only
1/3is needed you could end up with a system partitioned in such a way that you have 3 equally valid but conflicting outcomes– Mathias R. Jessen
Nov 14 '18 at 7:04