What if Priority 0 Replica Set Members got newest oplog

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I got a deployment with three nodes:

A: priority 2, vote 1
B: priority 1, vote 1
C: priority 0, vote 1

In normal case, A is Primary, B/C are Secondary. Assume the at a time point, B got oplog the timestamp of which is 100, C got 110. Then A crash, What will happen exactly?

As describe in this document, Priority 0 Replica Set Members will never become primary, so I think B will become primary, but what about the data. I’m using MongoDB 4.4 BTW.

Thanks for any input.

  • It depends on the Write Concern Read the document and if you have questions, then asked it here.

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