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Let's have two servers we want to put in the same replicaset A and B

On A : rs.initiate( [a config whith only A])
On B : rs.initiate( [a config whith only B])

then on A : rs.reconfig([a config with A and B])

A will have two primaries in the replicaset. B will have only himself.

The reconfig on A should fail instead of work to avoid this situation

duplicates

SERVER-22287 Merging replica sets with replication protocol version 1 may result in two primaries

is duplicated by

SERVER-7477 Calling rs.initiate() on 2 nodes when setting up replica set results in two primaries

Assignee:: [DO NOT USE] Backlog - Replication Team
Reporter:: Grégoire Seux
Participants:: [DO NOT USE] Backlog - Replication Team, Grégoire Seux, Kristina Chodorow, Spencer Brody
Votes:: 3 Vote for this issue
Watchers:: 10 Start watching this issue