src/jdk.jfr/share/classes/jdk/jfr/internal/dcmd/DCmdDump.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 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

@@ -122,10 +122,14 @@
             beginTime = Instant.now().minus(duration);
         }
         Recording recording = null;
         if (name != null) {
             recording = findRecording(name);
+            var dest = recording.getDestination();
+            if ((filename == null) && (dest != null)) {
+                filename = dest.toString();
+            }
         }
         PlatformRecorder recorder = PrivateAccess.getInstance().getPlatformRecorder();
         synchronized (recorder) {
             dump(recorder, recording, name, filename, maxSize, pathToGcRoots, beginTime, endTime);
         }