--- /dev/null	2020-01-02 04:43:18.583999853 +0000
+++ new/test/jdk/jfr/api/recording/dump/TestDumpMultiple.java	2020-01-30 06:30:46.870447144 +0000
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2018, 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.recording.dump;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.jfr.consumer.RecordingFile;
+import jdk.test.lib.Asserts;
+import jdk.test.lib.jfr.Events;
+import jdk.test.lib.jfr.SimpleEventHelper;
+
+/**
+ * @test
+ * @summary Test copyTo and parse file
+ * @key jfr
+ *
+ * @library /lib /
+ * @run main/othervm jdk.jfr.api.recording.dump.TestDumpMultiple
+ */
+public class TestDumpMultiple {
+
+    public static void main(String[] args) throws Exception {
+        Recording rA = new Recording();
+        Recording rB = new Recording();
+
+        // Enable event in one recording and disable in the other.
+        // Both recordings should still get the events, since we always
+        // get the "union" of all settings.
+        SimpleEventHelper.enable(rA, true);
+        SimpleEventHelper.enable(rB, false);
+
+        SimpleEventHelper.createEvent(0); // To no recording
+
+        rA.start();
+        SimpleEventHelper.createEvent(1); // Only to recA
+
+        rB.start();
+        SimpleEventHelper.createEvent(2); // To both recordings
+
+        rA.stop();
+
+        // This event will not be in recB.
+        // The reason is that recA has stopped so event is no longer enabled.
+        SimpleEventHelper.createEvent(3);
+
+        // Enable the event and create a new event for recB
+        SimpleEventHelper.enable(rB, true);
+        SimpleEventHelper.createEvent(4);
+
+        rB.stop();
+        SimpleEventHelper.createEvent(5); // To no recording
+
+        Path pathA = Paths.get(".", "recA.jfr");
+        Path pathB = Paths.get(".", "recB.jfr");
+        rA.dump(pathA);
+        rB.dump(pathB);
+        rB.close();
+        rA.close();
+
+        verifyRecording(pathA, 1, 2);
+        verifyRecording(pathB, 2, 4);
+    }
+
+    private static void verifyRecording(Path path, int... ids) throws Exception {
+        Asserts.assertTrue(Files.exists(path), "Recording file does not exist: " + path);
+        int countEvent = 0;
+        for (RecordedEvent event : RecordingFile.readAllEvents(path)) {
+            int id = Events.assertField(event, "id").getValue();
+            System.out.printf("Recording '%s' id=%d%n", path, id);
+            Asserts.assertTrue(ids.length > countEvent, "Found extra event");
+            Events.assertField(event, "id").equal(ids[countEvent]);
+            ++countEvent;
+        }
+        // We expect exactly 4 events in each file. 2 events * 2 chunks
+        Asserts.assertEquals(countEvent, ids.length, "Found too few events");
+    }
+
+}