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Merge branch 'master' of github.com:coreos/etcd

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Brandon Philips
2014-06-25 08:57:54 -07:00
parent ac7e6bb002 4b45cd4110
commit cd820269a6
1 changed files with 3 additions and 3 deletions
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Documentation/optimal-cluster-size.md
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@@ -28,11 +28,11 @@ The other important cluster optimization is to always have an odd active cluster
|--------------|------------|-------------------|
| 1 peers | 1 peers | None |
| 3 peers | 2 peers | 1 peer |
| 4 peers | 3 peers | 2 peers |
| 5 peers | 3 peers | **3 peers** |
| 4 peers | 3 peers | 1 peer |
| 5 peers | 3 peers | **2 peers** |
| 6 peers | 4 peers | 2 peers |
| 7 peers | 4 peers | **3 peers** |
| 8 peers | 5 peers | 3 peers |
| 9 peers | 5 peers | **4 peers** |
As you can see, adding another peer to bring the number of active peers up to an odd size is always worth it. During a network partition, an odd number of active peers also guarantees that there will almost always be a majority of the cluster that can continue to operate and be the source of truth when the partition ends.
As you can see, adding another peer to bring the number of active peers up to an odd size is always worth it. During a network partition, an odd number of active peers also guarantees that there will almost always be a majority of the cluster that can continue to operate and be the source of truth when the partition ends.