Service `popular` supresses intermediate results

[demos/kafka/wordcount] / popular

diff --git a/popular b/popular
index e88db15..feb9d86 160000 (submodule)
--- a/popular
+++ b/popular
@@ -1 +1 @@
-Subproject commit e88db15eafe64ac083d066be29ad94058930bb5d
+Subproject commit feb9d86212983d93d3546f5a4d9b15f14cd57314