https://bz.apache.org/bugzilla/show_bug.cgi?id=65404
Bug ID: 65404
Summary: after upgrade Tomcat 8.5.57 to 8.5.66 the Tomcat
Manager Status page is unstable
Product: Tomcat 8
Version: 8.5.66
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: Manager
Assignee: dev@tomcat.apache.org
Reporter: jor...@ze.com
Target Milestone: ----
Unfortunately we use an APM that relies on the Tomcat Manager Status page.
This was working fine with Tomcat 8.5.57
Since upgrading to Tomcat 8.5.66 the Status page has become unstable.
After some time (could be a couple hours, could be days) it will eventually
start missing the info at the bottom of the page and an error will be logged:
22-Jun-2021 13:34:26.736 SEVERE [http-nio-8080-exec-7]
org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for
servlet [Status] in context with path [/manager] threw exception
[javax.management.AttributeNotFoundException: Cannot find attribute maxTime for
BaseModelMbean[null]] with root cause
javax.management.AttributeNotFoundException: Cannot find attribute
maxTime for BaseModelMbean[null]
at
org.apache.tomcat.util.modeler.ManagedBean.getGetter(ManagedBean.java:435)
at
org.apache.tomcat.util.modeler.BaseModelMBean.getAttribute(BaseModelMBean.java:166)
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:647)
at
com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:678)
at
org.apache.catalina.manager.StatusTransformer.writeConnectorState(StatusTransformer.java:357)
This is somewhat similar to a previous bug but intermittent
(https://bz.apache.org/bugzilla/show_bug.cgi?id=62918)
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