Clear server pool when a server is marked unknown

p · p · commit 2097f8ae0d3f · 2019-08-02T16:08:12.000-04:00
diff --git a/lib/mongo/server.rb b/lib/mongo/server.rb
@@ -474,7 +474,11 @@ def unknown!
 
     # @api private
     def update_description(description)
+      clear_pool = @pool && description.unknown? && !@description.unknown?
       @description = description
+      if clear_pool
+        @pool.disconnect!
+      end
     end
 
     # @api private
