title: How does mongodb replica set react in this scenario?
body: <p>Given the scenario of a typical replica set (one primary, one secondary and one arbiter) in which 3 members are deployed on 3 independent network nodes. If the network connection between primary and secondary is broken, while anything else is all good, how does mongodb react?</p>
  
  <p>Under this circumstances, the arbiter knows the primary and the secondary are both alive, and the primary is not actually impacted although it will continue reporting the disconnection of secondary, but to the secondary, will it trigger an election to be the primary? Then what happens to the original primary? and so on.</p>
  
  <p>I can't figure out what will happen, and this scenario is hard to create on my PC. Dose anyone has a clue?</p>