3 Replies Latest reply on Apr 25, 2019 3:26 AM by Alexander Taran

    Operation ("read-attribute") failed

    Alexander Taran Newbie

      Server hung and in server.log just wrote this:

      How understand why it hung? How to fix without reboot server?

       

      ERROR [org.jboss.as.controller.management-operation] (External Management Request Threads -- 5) WFLYCTL0013: Operation ("read-attribute") failed - address: ([

          ("deployment" => "deploy"),

          ("subsystem" => "undertow")

      ]): java.lang.NullPointerException

              at org.wildfly.extension.undertow.DeploymentDefinition$SessionManagerStatsHandler.executeRuntimeStep(DeploymentDefinition.java:101)

              at org.jboss.as.controller.AbstractRuntimeOnlyHandler$1.execute(AbstractRuntimeOnlyHandler.java:53)

              at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:890)

              at org.jboss.as.controller.AbstractOperationContext.processStages(AbstractOperationContext.java:659)

              at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:370)

              at org.jboss.as.controller.OperationContextImpl.executeOperation(OperationContextImpl.java:1329)

              at org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:400)

              at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:222)

              at org.jboss.as.domain.http.server.DomainApiHandler.handleRequest(DomainApiHandler.java:219)

              at io.undertow.server.handlers.encoding.EncodingHandler.handleRequest(EncodingHandler.java:72)

              at org.jboss.as.domain.http.server.security.SubjectDoAsHandler$1.run(SubjectDoAsHandler.java:72)

              at org.jboss.as.domain.http.server.security.SubjectDoAsHandler$1.run(SubjectDoAsHandler.java:68)

              at java.security.AccessController.doPrivileged(Native Method)

              at javax.security.auth.Subject.doAs(Subject.java:422)

              at org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:149)

              at org.jboss.as.domain.http.server.security.SubjectDoAsHandler.handleRequest(SubjectDoAsHandler.java:68)

              at org.jboss.as.domain.http.server.security.SubjectDoAsHandler.handleRequest(SubjectDoAsHandler.java:63)

              at io.undertow.server.handlers.BlockingHandler.handleRequest(BlockingHandler.java:56)

              at org.jboss.as.domain.http.server.DomainApiCheckHandler.handleRequest(DomainApiCheckHandler.java:95)

              at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)

              at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:805)

              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

              at java.lang.Thread.run(Thread.java:748)

              at org.jboss.threads.JBossThread.run(JBossThread.java:320)