diff -r e1b896faca1c -r 2bc0dc4b7119 src/hotspot/share/jfr/recorder/checkpoint/jfrCheckpointManager.cpp
--- a/src/hotspot/share/jfr/recorder/checkpoint/jfrCheckpointManager.cpp	Tue Sep 17 12:06:48 2019 +0200
+++ b/src/hotspot/share/jfr/recorder/checkpoint/jfrCheckpointManager.cpp	Tue Sep 17 12:37:53 2019 +0200
@@ -419,12 +419,16 @@
   }
 }
 
-void JfrCheckpointManager::notify_types_on_rotation() {
-  JfrTypeManager::notify_types_on_rotation();
+void JfrCheckpointManager::on_rotation() {
+  assert(SafepointSynchronize::is_at_safepoint(), "invariant");
+  JfrTypeManager::on_rotation();
+  notify_threads();
+  shift_epoch();
 }
 
 void JfrCheckpointManager::write_type_set() {
   JfrTypeManager::write_type_set();
+  write();
 }
 
 void JfrCheckpointManager::write_type_set_for_unloaded_classes() {