--- /dev/null	2018-06-17 23:18:20.806999507 +0800
+++ new/test/jdk/jfr/api/flightrecorder/TestRecorderInitializationCallback.java	2019-01-29 11:01:06.281032954 +0800
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.jfr.api.flightrecorder;
+
+import static jdk.testlibrary.Asserts.assertEquals;
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+import jdk.jfr.FlightRecorder;
+import jdk.jfr.FlightRecorderListener;
+
+/*
+ * @test
+ * @summary Test Flight Recorder initialization callback is only called once
+ * @key jfr
+ * @library /lib/testlibrary
+ * @run main/othervm jdk.jfr.api.flightrecorder.TestRecorderInitializationCallback
+ */
+public class TestRecorderInitializationCallback {
+
+    private static class TestListener implements FlightRecorderListener {
+        private final AtomicInteger count = new AtomicInteger();
+
+        @Override
+        public void recorderInitialized(FlightRecorder recorder) {
+            count.incrementAndGet();
+            System.out.println("recorderInitialized: " + recorder + " count=" + count);
+            // Get the recorder again, should not trigger listener
+            FlightRecorder.getFlightRecorder();
+        }
+    }
+
+    public static void main(String[] args) throws Throwable {
+        TestListener t = new TestListener();
+        FlightRecorder.addListener(t);
+        // trigger initialization
+        FlightRecorder.getFlightRecorder();
+        assertEquals(1, t.count.intValue(), "Expected 1 notification, got " + t.count);
+    }
+}