Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/2145#discussion_r68043366
--- Diff:
flink-core/src/main/java/org/apache/flink/metrics/reporter/JMXReporter.java ---
@@ -73,10 +86,61 @@ public JMXReporter() {
//
------------------------------------------------------------------------
@Override
- public void open(Configuration config) {}
+ public void open(Configuration config) {
+ this.jmxServer = startJmxServer(config);
+ }
+
+ private static JMXServer startJmxServer(Configuration config) {
+ JMXServer jmxServer;
+
+ String portRange = config.getString(KEY_METRICS_JMX_PORT,
"9010-9025");
+ String[] ports = portRange.split("-");
+
+ if (ports.length == 0 || ports.length > 2) {
+ throw new IllegalArgumentException("JMX port range was
configured incorrectly. " +
+ "Expected: <startPort>[-<endPort>] Configured:
" + portRange);
+ }
+
+ if (ports.length == 1) { //single port was configured
+ int port = Integer.parseInt(ports[0]);
+ jmxServer = new JMXServer(port);
+ try {
+ jmxServer.start();
+ } catch (IOException e) {
+ throw new RuntimeException("Could not start JMX
server on port " + port + ".");
+ }
+ return jmxServer;
+ } else { //port range was configured
+ int start = Integer.parseInt(ports[0]);
+ int end = Integer.parseInt(ports[1]);
+ while (true) {
+ try {
+ jmxServer = new JMXServer(start);
+ jmxServer.start();
+ LOG.info("Starting JMX on port " +
start + ".");
--- End diff --
I mean it could also be interesting to see which ports where tried to start
the JMX server on. Maybe as a debug logging statement.
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