Previously Completed JIRA Tickets

Marcus Hirt marcus.hirt at
Tue Nov 27 18:06:19 UTC 2018

Hi Ken,

JMC-5612: This smells like either a new content type or normalizing the event 
          type. I am keeping it open but moving it to a later release. 

JMC-5406: Indeed - resolved as fixed.

JMC-5575: Need to test against an Oracle JDK 8. Keeping it open.

JMC-5366: Reported from outside the JMC team. I don't think this should hold up
          the release, and any change to improve this would be risky at this 
          point. I am moving it to 7.1.0.
JMC-4556: Indeed - resolved as fixed.

Thank you for looking at these!

Kind regards,

On 2018-11-27, 18:35, "jmc-dev on behalf of Erik Gahlin" <jmc-dev-bounces at on behalf of erik.gahlin at> wrote:

    Hi Ken,
    You can create a large recording like this:
    import jdk.jfr.*;
    public class LargeRecording {
         static class MyEvent extends Event {
         public static void main(String[] args) throws Exception {
             try (Recording r = new Recording()) {
                 do {
                     for (int i = 0; i < 1_000_000; i++) {
                         MyEvent e = new MyEvent();
                     System.out.println("Size: " + r.getSize() / (1024 * 
    1024) + " MB");
                 } while (r.getSize() < 1024 * 1024 * 1024);
                 Path file = Files.createTempFile("large-recording", ".jfr");
                 System.out.println("Dumping file at " + file);
                 System.out.println("File will be removed in 30 s. ");
                 System.out.println("File removed!");
    > Hi all,
    > I've created a list of bugs that most likely have been solved so that they
    > can be resolved on JIRA. Please let me know if there was any issues with
    > how I attempted to replicate.
    > 1. Select OldObjectSample in Event Browser
    > 2. Objects that are not in an array display an Array Size of -1 rather than
    > MININT
    > -
    > EventAppearance class no longer exists in flightrecorder.configuration
    > -
    > 1. Added a Custom Event to a JVM and opened the Recording Wizard
    > 2. Selected my custom event and the Enabled checkbox was not visually
    > selected and did not record when started unless selected
    > -
    >     I'm not sure about this one as I'm unable to create large recordings on
    > my machine, a few hundred megabytes max so I haven't noticed any
    > significant lag. However it appears a large portion of the data is
    > persisted after the page is loaded for the first time so I'm wondering if
    > this is mostly an issue if you try to switch between a number of pages that
    > have yet to be loaded.
    >       As well the Outline tab only updates the highlighted selection to the
    > last selection which seems to indicates the load is being aborted at some
    > point. An example to make this more clear would be if we select Thread ->
    > Memory -> File I/O -> Socket I/O very quickly we'll only see Threads
    > initially highlighted then Socket I/O will load and be highlighted,
    > skipping over B and C.
    >      Any more information regarding this one would be great thanks.
    > -
    >       Again not sure about this one as I'm not aware of what
    > FilterMatcher.regexpMatch() looked like at the time this bug was opened as
    > there is no history as a result of the move to the OpenJDK. That being said
    > it caches the most recently compiled Pattern as a class variable and only
    > compiles a new Pattern if it doesn't equal the filterString.
    >       This to me sounds like some changes were made since the ticket refers
    > to a new pattern being compiled each time it's called. If someone could
    > clarify this that would be great.
    > Thanks,
    > Ken Dobson

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