Github user zentol commented on a diff in the pull request: https://github.com/apache/flink/pull/2145#discussion_r68396189 --- Diff: flink-core/src/main/java/org/apache/flink/metrics/reporter/JMXReporter.java --- @@ -265,4 +329,72 @@ public Object getValue() { return gauge.getValue(); } } + + /** + * JMX Server implementation that JMX clients can connect to. + * + * Heavily based on j256 simplejmx project + * + * https://github.com/j256/simplejmx/blob/master/src/main/java/com/j256/simplejmx/server/JmxServer.java + */ + private static class JMXServer { + private int port; + private Registry rmiRegistry; + private JMXConnectorServer connector; + + public JMXServer(int port) { + this.port = port; + } + + public void start() throws IOException { + startRmiRegistry(); + startJmxService(); + } + + public void stop() throws IOException { + if (connector != null) { + try { + connector.stop(); + } finally { + connector = null; + } + } + if (rmiRegistry != null) { + try { + UnicastRemoteObject.unexportObject(rmiRegistry, true); + } catch (NoSuchObjectException e) { + throw new IOException("Could not unexport our RMI registry", e); + } finally { + rmiRegistry = null; + } + } + } + + private void startRmiRegistry() throws IOException { + if (rmiRegistry != null) { + return; + } + rmiRegistry = LocateRegistry.createRegistry(port); + } + + private void startJmxService() throws IOException { + if (connector != null) { + return; + } + String serverHost = "localhost"; + String registryHost = ""; + String serviceUrl = + "service:jmx:rmi://" + serverHost + ":" + port + "/jndi/rmi://" + registryHost + ":" + port + "/jmxrmi"; --- End diff -- No, it does not allow connecting via remote. This also applies to the current version. I also remembered that this was not considered a required feature during implementation.
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