Tomcat error logs show "cached - no such method"

[CommunityUser]

I notice that I have this error repeated about 5 times in a row,  sporadically throughout the day. What may be causing this?

Running AppServerAgent-3.7.12

RedHat Linux 2.6.32-358.18.1.el6.x86_64

INFO   | jvm 1    | 2014/02/10 10:29:06 | com.singularity.ee.agent.util.i: cached - no such method
INFO   | jvm 1    | 2014/02/10 10:29:06 |     at com.singularity.ee.agent.util.yf.<clinit>(yf.java:74)
INFO   | jvm 1    | 2014/02/10 10:29:06 |     at com.singularity.ee.agent.appagent.kernel.c.e(c.java:281)
INFO   | jvm 1    | 2014/02/10 10:29:06 |     at com.singularity.ee.agent.appagent.kernel.c.start(c.java:97)
INFO   | jvm 1    | 2014/02/10 10:29:06 |     at com.singularity.ee.agent.appagent.kernel.JavaAgent.initialize(JavaAgent.java:235)
INFO   | jvm 1    | 2014/02/10 10:29:06 |     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
INFO   | jvm 1    | 2014/02/10 10:29:06 |     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
INFO   | jvm 1    | 2014/02/10 10:29:06 |     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
INFO   | jvm 1    | 2014/02/10 10:29:06 |     at java.lang.reflect.Method.invoke(Method.java:606)
INFO   | jvm 1    | 2014/02/10 10:29:06 |     at com.singularity.ee.agent.appagent.AgentEntryPoint$1.run(AgentEntryPoint.java:173)

[Arun_Dasetty]

Hi,

Can you please send the zipped version of <agent_dir>/logs directory to assist you better.

We see such errors when either there is no enough permissions for agent install directory or when there is any custom configuration earlier ,let us know if this is the case?

Regards,

Arun

[CommunityUser]

Hi Arun,

The permissions are all open on that directory (chmod -R 777).

<?xml version="1.0" encoding="UTF-8"?>
<controller-info>
    <controller-host>*********</controller-host>
    <controller-port>443</controller-port>
    <controller-ssl-enabled>true</controller-ssl-enabled>
    <application-name>Oak</application-name>
    <tier-name>Prod</tier-name>
    <node-name>Node1</node-name>
    <agent-runtime-dir></agent-runtime-dir>
    <enable-orchestration>false</enable-orchestration>
    <account-name>university</account-name>
    <account-access-key>**********</account-access-key>
    <force-agent-registration>false</force-agent-registration>
    <agent-install>shared</agent-install>
</controller-info>

I have not set any other custom configurations.

Thanks,
Craig

[Arun_Dasetty]

Hi Craig,

Can you change the node name from "Node1" to some different name say: "testNode1" as "Node1" is reserver for controller internal agent, please change the node name in controller-info.xml of agent directory and restart the server after saving changes and if you still see the error please send the zipped version <agent_install_dir>/logs directory to assist you better?

Regards,

Arun

[CommunityUser]

Hi Arun,

Node1 is not the name I use, that is my obfuscated name.

What are you looking for in the logs specifically, or which log?

Thanks,
Craig

[Arun_Dasetty]

We are looking for agent.log to see complete error stacktace and bct.log

[CommunityUser]

There is no stack trace other than the error I submitted. That is the problem. If there was a stack trace I would have submitted it.
What has caused this error in the past?

Thanks!

Craig

[Arun_Dasetty]

Hi Craig,

We see similar error stacktraces earlier for the following cases:

- when user added some custom correlation config and the rule is not correct in <agent_dir>/conf/app-agent-config.xml

-  When there is a BT that wraps a service that tries to send request to other service though some ws or rmi calls and agent invokes with that but failed to get information of where the calls are getting resolved when call the underlying server api to get such info

- When user have not provide enough executable permissions to agent install dir

Can you please add the node level property on one of the node having this issue and let us know how it goes with new load:
Property = enable-interceptors-for-security
Description = Node property to enable security interceptors
Type = Boolean
Value = true

- refer doc for steps to modify node property:

http://docs.appdynamics.com/display/PRO13S/App+Agent+Node+Properties#AppAgentNodeProperties-Toregist...

Regards,

Arun

[CommunityUser]

There is no error stack in the agent log. This error in my application TOMCAT log, and is caused by the JavaAgent. Since the agent startup is linked to the application, the error is in the application log, not the agent log.

Have you ever seen this error before?

Thanks,
Craig

[Arun_Dasetty]

Hi Craig,

Yes, we see similar error "cached - no such method" earlier but we would like to see the root error as part of complete stack trace and provided us complete application logs and also zipped verison of <agent_dir>/logs will help us to assist you better?

Regards,

Arun