--- a/src/jdk.jfr/share/classes/jdk/jfr/internal/RequestEngine.java	Fri Jul 05 17:11:55 2019 +0200
+++ b/src/jdk.jfr/share/classes/jdk/jfr/internal/RequestEngine.java	Mon Jul 08 18:11:26 2019 +0200
@@ -263,6 +263,7 @@
             if (r_delta >= r_period) {
                 r_delta = 0;
                 MetadataRepository.getInstance().flush();
+                Utils.notifyFlush();
             }
             long left = (r_period - r_delta);
             if (left < 0) {