nickva commented on issue #3750:
URL: https://github.com/apache/couchdb/issues/3750#issuecomment-920294880
I think this might fix it:
```
git diff
diff --git a/src/fabric/src/fabric_view_map.erl
b/src/fabric/src/fabric_view_map.erl
index b8d0d392a..eed6af74e 100644
--- a/src/fabric/src/fabric_view_map.erl
+++ b/src/fabric/src/fabric_view_map.erl
@@ -147,9 +147,9 @@ handle_message({meta, Meta0}, {Worker, From}, State) ->
end;
handle_message(#view_row{}, {_, _}, #collector{limit=0} = State) ->
- #collector{callback=Callback} = State,
- {_, Acc} = Callback(complete, State#collector.user_acc),
- {stop, State#collector{user_acc=Acc}};
+ % rely on limit=0 special clause in maybe_send_row to wait until all
+ % shard ranges reply
+ fabric_view:maybe_send_row(State);
handle_message(#view_row{} = Row, {_,From}, #collector{sorted=false} = St)
->
#collector{callback=Callback, user_acc=AccIn, limit=Limit} = St,
```
We rely on the logic in
https://github.com/apache/couchdb/blob/9f081914fe1fd7f31c2c1c7b3ead89427cf342f3/src/fabric/src/fabric_view.erl#L124-L134
to already wait until we have completed the ring with meta only (we don't bump
counters with any rows returned)
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