Hello,

I'm using Wildfly-16.0 with Oracle Java JDK 8 on SPARC Solaris 10 / 11.

During startup I get one or two exceptions like this one here:

27.03. 18:24:19,131 ERROR [org.jboss.msc.service.fail#startFailed] MSC000001: Failed to start service jboss.deployment.unit."web-bdo.war".metrics: org.jboss.msc.service.StartException in service jboss.deployment.unit."web-bdo.war".metrics: Failed to start service
at org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1730)
at org.jboss.msc.service.ServiceControllerImpl$ControllerTask.run(ServiceControllerImpl.java:1558)
at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException
at org.wildfly.extension.microprofile.metrics.PrometheusCollector.addMetricFamilySampleSupplier(PrometheusCollector.java:32)
at org.wildfly.extension.microprofile.metrics.MetricCollector.collectResourceMetrics0(MetricCollector.java:157)
at org.wildfly.extension.microprofile.metrics.MetricCollector.collectResourceMetrics0(MetricCollector.java:166)
at org.wildfly.extension.microprofile.metrics.MetricCollector.collectResourceMetrics0(MetricCollector.java:166)
at org.wildfly.extension.microprofile.metrics.MetricCollector.collectResourceMetrics(MetricCollector.java:92)
at org.wildfly.extension.microprofile.metrics.deployment.DeploymentMetricService.start(DeploymentMetricService.java:54)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1738)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1700)
... 6 more

The application itself which got this exception seems to be working without any problems.

I did not see this on my test machine with 2 quite slow processors. But now on our development server with 8 faster CPUs this comes up.

What to do?

Can I remove the microprofile subsystems from the config?

        <extension module="org.wildfly.extension.microprofile.config-smallrye"/>

        <extension module="org.wildfly.extension.microprofile.health-smallrye"/>

        <extension module="org.wildfly.extension.microprofile.metrics-smallrye"/>

        <extension module="org.wildfly.extension.microprofile.opentracing-smallrye"/>

As far as I understodd, I won't need them, as we will run the Wildfly server directly on Windows or Solaris or AIX boxes without any containers like docker.

Regards, Frank