Once users upgrade to the new election protocol we will start automatically adding j:true to any w:majority writes. This could trigger a dassert on debug builds if journaling is off because we will consider the write concern with j:true to not be valid since journaling is disabled.
In addition, it may cause errors to be returned to the client.

I think to fix this, we should not append j:true to w:majority writes if journaling is disabled.