| Summary: | NIO Connector: Exception invoking method readBufSize / writeBufSize in the JMX Proxy Servlet | ||
|---|---|---|---|
| Product: | Tomcat 7 | Reporter: | Sven Woltmann <sven.asf> |
| Component: | Connectors | Assignee: | Tomcat Developers Mailing List <dev> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | ||
| Priority: | P2 | ||
| Version: | 7.0.25 | ||
| Target Milestone: | --- | ||
| Hardware: | PC | ||
| OS: | Linux | ||
Fixed in trunk and 7.0.x and will be included in 7.0.26 onwards. For reference:
The NPE was thrown from the following code in SocketProperties, where Integer txBufSize is null:
public int getTxBufSize() {
return txBufSize.intValue();
}
MBeanDumper#dumpBeans() skips null values. It is OK to skip such NPEs as well. The fix in 7.0.26 is r1244746
Hi, It's strange but I've got almost the same exception but at Tomcat 8.0.33. 2017-07-20 14:18:45,572 ERROR [chedulerFactoryBean#0_Worker-9] [shc.ecom.sywlocal.monitoring.HTTPReporter] - Got exception: javax.management.RuntimeOperationsException: Exception invoking method writeBufSize at org.apache.tomcat.util.modeler.BaseModelMBean.getAttribute(BaseModelMBean.java:196) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:647) at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:678) at com.codahale.metrics.JmxAttributeGauge.getValue(JmxAttributeGauge.java:44) at com.shc.ecom.sywlocal.monitoring.HTTPReporter.createMeasurementObject(HTTPReporter.java:123) at com.shc.ecom.sywlocal.monitoring.HTTPReporter.createWebContainerData(HTTPReporter.java:363) at com.shc.ecom.sywlocal.monitoring.HTTPReporter.createMeasurementObjects(HTTPReporter.java:151) at com.shc.ecom.sywlocal.monitoring.HTTPReporter.report(HTTPReporter.java:89) at sun.reflect.GeneratedMethodAccessor151.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.util.MethodInvoker.invoke(MethodInvoker.java:269) at org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.java:312) at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:114) at org.quartz.core.JobRunShell.run(JobRunShell.java:202) at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:525) Caused by: java.lang.NullPointerException at org.apache.tomcat.util.net.SocketProperties.getTxBufSize(SocketProperties.java:300) at org.apache.tomcat.util.net.NioEndpoint.getWriteBufSize(NioEndpoint.java:493) at sun.reflect.GeneratedMethodAccessor147.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.tomcat.util.modeler.BaseModelMBean.getAttribute(BaseModelMBean.java:189) ... 15 more Will create proper bug for Tomcat 8.0.33 later. Thanks, Evgeny Kochnev and ... 2017-07-20 14:15:37,491 ERROR [chedulerFactoryBean#0_Worker-9] [shc.ecom.sywlocal.monitoring.HTTPReporter] - Got exception: javax.management.RuntimeOperationsException: Exception invoking method readBufSize at org.apache.tomcat.util.modeler.BaseModelMBean.getAttribute(BaseModelMBean.java:196) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:647) at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:678) at com.codahale.metrics.JmxAttributeGauge.getValue(JmxAttributeGauge.java:44) at com.shc.ecom.sywlocal.monitoring.HTTPReporter.createMeasurementObject(HTTPReporter.java:123) at com.shc.ecom.sywlocal.monitoring.HTTPReporter.createWebContainerData(HTTPReporter.java:363) at com.shc.ecom.sywlocal.monitoring.HTTPReporter.createMeasurementObjects(HTTPReporter.java:151) at com.shc.ecom.sywlocal.monitoring.HTTPReporter.report(HTTPReporter.java:89) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.util.MethodInvoker.invoke(MethodInvoker.java:269) at org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.java:312) at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:114) at org.quartz.core.JobRunShell.run(JobRunShell.java:202) at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:525) Caused by: java.lang.NullPointerException at org.apache.tomcat.util.net.SocketProperties.getRxBufSize(SocketProperties.java:272) at org.apache.tomcat.util.net.NioEndpoint.getReadBufSize(NioEndpoint.java:497) at sun.reflect.GeneratedMethodAccessor121.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.tomcat.util.modeler.BaseModelMBean.getAttribute(BaseModelMBean.java:189) ... 16 more More info ... It happens when I try to get: ThreadPool.ajp-nio-8009.readBufSize or ThreadPool.ajp-nio-8009.writeBufSize Thanks, Evgeny Kochnev |
JDK versions tested with: 1.7.0_02 (x64) and 1.7.0_03 (x64) I am using the new NIO connector, configured like this: <Connector protocol="org.apache.coyote.ajp.AjpNioProtocol" port="8009" redirectPort="8443" URIEncoding="UTF-8" maxThreads="50" minSpareThreads="10" connectionTimeout="600000" acceptorThreadCount="2" /> I query the JMX proxy for the thread pool status like this: http://www.mydomain.com/manager/jmxproxy/?qry=Catalina:type=ThreadPool,name=%22ajp-nio-8009%22 The JMX proxy servlet returns a valid response, and the server's general operation is not affected in any way. But at the same time, Tomcat logs the following two exceptions to catalina.out: Feb 15, 2012 12:26:49 PM org.apache.catalina.mbeans.MBeanDumper dumpBeans Schwerwiegend: Error getting attribute Catalina:type=ThreadPool,name="ajp-nio-8009" readBufSize javax.management.RuntimeOperationsException: Exception invoking method readBufSize at org.apache.tomcat.util.modeler.BaseModelMBean.getAttribute(BaseModelMBean.java:197) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:647) at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:668) at org.apache.catalina.mbeans.MBeanDumper.dumpBeans(MBeanDumper.java:81) at org.apache.catalina.manager.JMXProxyServlet.listBeans(JMXProxyServlet.java:166) at org.apache.catalina.manager.JMXProxyServlet.doGet(JMXProxyServlet.java:121) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:581) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.ajp.AjpNioProcessor.process(AjpNioProcessor.java:184) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1600) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.NullPointerException at org.apache.tomcat.util.net.SocketProperties.getRxBufSize(SocketProperties.java:251) at org.apache.tomcat.util.net.NioEndpoint.getReadBufSize(NioEndpoint.java:613) at sun.reflect.GeneratedMethodAccessor1196.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.apache.tomcat.util.modeler.BaseModelMBean.getAttribute(BaseModelMBean.java:190) ... 25 more Feb 15, 2012 12:26:49 PM org.apache.catalina.mbeans.MBeanDumper dumpBeans Schwerwiegend: Error getting attribute Catalina:type=ThreadPool,name="ajp-nio-8009" writeBufSize javax.management.RuntimeOperationsException: Exception invoking method writeBufSize at org.apache.tomcat.util.modeler.BaseModelMBean.getAttribute(BaseModelMBean.java:197) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:647) at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:668) at org.apache.catalina.mbeans.MBeanDumper.dumpBeans(MBeanDumper.java:81) at org.apache.catalina.manager.JMXProxyServlet.listBeans(JMXProxyServlet.java:166) at org.apache.catalina.manager.JMXProxyServlet.doGet(JMXProxyServlet.java:121) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:581) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.ajp.AjpNioProcessor.process(AjpNioProcessor.java:184) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1600) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.NullPointerException at org.apache.tomcat.util.net.SocketProperties.getTxBufSize(SocketProperties.java:283) at org.apache.tomcat.util.net.NioEndpoint.getWriteBufSize(NioEndpoint.java:609) at sun.reflect.GeneratedMethodAccessor1151.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.apache.tomcat.util.modeler.BaseModelMBean.getAttribute(BaseModelMBean.java:190) ... 25 more