/api/metrics fails with Kafka 1.0 and Java 9

[manderson23]

The following exception is visible in the broker logs

[2017-11-13 10:20:52,018] WARN /api/metrics (org.eclipse.jetty.servlet.ServletHandler) java.lang.reflect.InaccessibleObjectException: Unable to make public long com.sun.management.internal.OperatingSystemImpl.getOpenFileDescriptorCount() accessible: module jdk.management does not "opens com.sun.management.internal" to unnamed module @141e5bef at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:337) at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:281) at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:198) at java.base/java.lang.reflect.Method.setAccessible(Method.java:192) at com.yammer.metrics.core.VirtualMachineMetrics.fileDescriptorUsage(VirtualMachineMetrics.java:257) at com.yammer.metrics.reporting.MetricsServlet.writeVmMetrics(MetricsServlet.java:253) at com.yammer.metrics.reporting.MetricsServlet.doGet(MetricsServlet.java:175) at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:587) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) at org.eclipse.jetty.server.Server.handle(Server.java:499) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:258) at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555) at java.base/java.lang.Thread.run(Thread.java:844)

[azunke]

Hey, I am also facing the same issue. Did you get anything related to the issue?

[MrMoronIV]

does this mean this package doesn't work anymore in later versions?

[MrMoronIV]

In other words, this project is dead no?

[manderson23]

@MrMoronIV looks like it. Most people seem to use Prometheus JMX exporter for Kafka metrics.