EJB look from a remote client using JNDI throws Slf4j related exception

[arnab_ghosh]

Hi All,

I am using JNDI to look up a remote SessionBean from a remote J2SE daemon process. I have followed the guide: EJB invocations from a remote client using JNDI - WildFly 8 - Project Documentation Editor to set this up. Intermittently I am seeing the below Exception

2016-01-26 01:31:04,295 [MigrationDaemon[asupply]] DEBUG org.jboss.ejb.client.EJBClientContext  - org.jboss.ejb.client.RandomDeploymentNodeSelector@33dd068f deployment node sele

ctor selected degtluv0321 node for appname=aoma.service,modulename=aoma.service.common.ejb,distinctname=

2016-01-26 01:31:07,304 [MigrationDaemon[asupply]] ERROR com.aoma.asset.migration.MigrationDaemon  - Exception in MigrationDaemon: java.lang.ClassNotFoundException: or

g.slf4j.impl.Slf4jLogger

javax.ejb.EJBException: java.lang.ClassNotFoundException: org.slf4j.impl.Slf4jLogger

        at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:236)

        at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:181)

        at org.jboss.ejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:144)

        at com.sun.proxy.$Proxy51.parse(Unknown Source)

        at com.aoma.asset.migration.MigrationJobBuilder.getMigrationJob(MigrationJobBuilder.java:400)

        at com.aoma.asset.migration.MigrationDaemon.submitMigrationTasks(MigrationDaemon.java:832)

        at com.aoma.asset.migration.MigrationDaemon.runOnce(MigrationDaemon.java:799)

        at com.aoma.asset.migration.MigrationDaemon.run(MigrationDaemon.java:775)

        at java.lang.Thread.run(Thread.java:745)

Caused by: java.lang.ClassNotFoundException: org.slf4j.impl.Slf4jLogger

        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

        at java.lang.Class.forName0(Native Method)

        at java.lang.Class.forName(Class.java:348)

        at org.jboss.marshalling.AbstractClassResolver.loadClass(AbstractClassResolver.java:131)

        at org.jboss.marshalling.AbstractClassResolver.resolveClass(AbstractClassResolver.java:112)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadClassDescriptor(RiverUnmarshaller.java:949)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1256)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:276)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:224)

        at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1746)

        at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1659)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1286)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:276)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:224)

        at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1746)

        at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1659)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1286)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:276)

        at org.jboss.marshalling.river.BlockUnmarshaller.readObject(BlockUnmarshaller.java:149)

        at org.jboss.marshalling.river.BlockUnmarshaller.readObject(BlockUnmarshaller.java:135)

        at org.jboss.marshalling.MarshallerObjectInputStream.readObjectOverride(MarshallerObjectInputStream.java:53)

        at org.jboss.marshalling.river.RiverObjectInputStream.readObjectOverride(RiverObjectInputStream.java:307)

        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:365)

        at java.util.TreeMap.buildFromSorted(TreeMap.java:2563)

        at java.util.TreeMap.buildFromSorted(TreeMap.java:2547)

        at java.util.TreeMap.buildFromSorted(TreeMap.java:2504)

        at java.util.TreeMap.readTreeSet(TreeMap.java:2456)

        at java.util.TreeSet.readObject(TreeSet.java:533)

        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:497)

        at org.jboss.marshalling.reflect.SerializableClass.callReadObject(SerializableClass.java:307)

        at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1638)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1286)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:276)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:224)

        at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1746)

        at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1659)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1286)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:276)

        at org.jboss.marshalling.river.BlockUnmarshaller.readObject(BlockUnmarshaller.java:149)

        at org.jboss.marshalling.river.BlockUnmarshaller.readObject(BlockUnmarshaller.java:135)

        at org.jboss.marshalling.MarshallerObjectInputStream.readObjectOverride(MarshallerObjectInputStream.java:53)

        at org.jboss.marshalling.river.RiverObjectInputStream.readObjectOverride(RiverObjectInputStream.java:307)

        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:365)

        at java.util.TreeMap.buildFromSorted(TreeMap.java:2563)

        at java.util.TreeMap.buildFromSorted(TreeMap.java:2504)

        at java.util.TreeMap.readTreeSet(TreeMap.java:2456)

        at java.util.TreeSet.readObject(TreeSet.java:533)

        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:497)

        at org.jboss.marshalling.reflect.SerializableClass.callReadObject(SerializableClass.java:307)

        at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1638)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1286)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:276)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:224)

        at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1746)

        at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1659)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1286)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:276)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:224)

        at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1746)

        at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1659)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1286)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:276)

        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:209)

        at org.jboss.marshalling.AbstractObjectInput.readObject(AbstractObjectInput.java:41)

        at org.jboss.ejb.client.remoting.MethodInvocationResponseHandler$MethodInvocationResultProducer.getResult(MethodInvocationResponseHandler.java:103)

        at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:276)

        at org.jboss.ejb.client.EJBObjectInterceptor.handleInvocationResult(EJBObjectInterceptor.java:64)

        at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:290)

        at org.jboss.ejb.client.EJBHomeInterceptor.handleInvocationResult(EJBHomeInterceptor.java:88)

        at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:290)

        at org.jboss.ejb.client.TransactionInterceptor.handleInvocationResult(TransactionInterceptor.java:46)

        at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:290)

        at org.jboss.ejb.client.ReceiverInterceptor.handleInvocationResult(ReceiverInterceptor.java:129)

        at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:265)

        at org.jboss.ejb.client.EJBClientInvocationContext.awaitResponse(EJBClientInvocationContext.java:453)

        at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:202)

The Daemon process already has the following slf4j related jars in its class path:

slf4j-log4j12.jar

slf4j-api.jar

jcl104-over-slf4j.jar

Does the jboss-client.jar needs any other slf4j related dependencies ?

[arnab_ghosh]

tomekadamski Can you help please ?

Regards

Arnab

[tomekadamski]

Hi Arnab,

Please check that slf4j versions match in server and the client.

Regards,

Tomek

[arnab_ghosh]

They do match. I am using 1.4.3 version. Do i need to upgrade the version ?

[tomekadamski]

Hi Arnab,

Do you have a direct reference to org.slf4j.impl.Slf4jLogger class anywhere in your code?

Regards,

Tomek

[arnab_ghosh]

No Tomek. After enabling more detailed logging, it seem the failure is happening when the Remote SessionBean method invocation returns an object of Class which has the below:

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

private Logger log = LoggerFactory.getLogger(this.getClass());

Please advice