nickva commented on a change in pull request #3764:
URL: https://github.com/apache/couchdb/pull/3764#discussion_r715652735



##########
File path: src/chttpd/src/chttpd_changes.erl
##########
@@ -604,31 +605,49 @@ keep_sending_changes(Args, Acc0, FirstRound) ->
                 true ->
                     case wait_updated(Timeout, TimeoutFun, UserAcc3) of
                         {updated, UserAcc4} ->
-                            UserCtx = fabric2_db:get_user_ctx(Db),
-                            DbOptions1 = [{user_ctx, UserCtx} | DbOptions],
-                            case fabric2_db:open(fabric2_db:name(Db), 
DbOptions1) of
-                                {ok, Db2} ->
-                                    ?MODULE:keep_sending_changes(
-                                        Args#changes_args{limit = NewLimit},
-                                        ChangesAcc#changes_acc{
-                                            db = Db2,
-                                            user_acc = UserAcc4,
-                                            seq = EndSeq,
-                                            prepend = Prepend2,
-                                            timeout = Timeout,
-                                            timeout_fun = TimeoutFun
-                                        },
-                                        false
-                                    );
-                                _Else ->
-                                    end_sending_changes(Callback, UserAcc3, 
EndSeq)
+                            AccumulatedTime = timer:now_diff(os:timestamp(), 
T0) div 1000,

Review comment:
       To avoid the `div 1000` could use the more modern (OTP 18+) time 
functions here:
   
   ```
   1> erlang:system_time(millisecond).
   1632492974842
   2> T0 = erlang:system_time(millisecond), timer:sleep(1000), 
erlang:system_time(millisecond) - T0.
   1000
   ```
   
   
   




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