LoggerFactory is not a Logback LoggerContext but Logback is on the classpath. Talend Log4J competing implementation error

[JessevdW]

Hey all,

I've run into a problem after building a very simple Route that I use for a demo. Some information

on my configurations.

• I'm running Talend Cloud Real-Time Big Data Platform version 7.2.1
• I'm using Java SE 8 [1.8.0_151] (but i've also tried 1.8.0_171)
• The bindings shown in Talend are as follows:

  Starting job PostDataConsumer at 10:47 19/09/2019.

  SLF4J: Class path contains multiple SLF4J bindings.

  SLF4J: Found binding in [jar:file:/*/Talend/Talend-Studio-20190620_1446-V7.2.1/configuration/.m2/repository/org/apache/activemq/activemq-all/5.15.9/activemq-all-5.15.9.jar!/org/slf4j/impl/StaticLoggerBinder.class]

  SLF4J: Found binding in [jar:file:/*/Talend/Talend-Studio-20190620_1446-V7.2.1/configuration/.m2/repository/org/talend/libraries/slf4j-log4j12-1.7.5/6.0.0/slf4j-log4j12-1.7.5-6.0.0.jar!/org/slf4j/impl/StaticLoggerBinder.class]

  SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.

  SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]

  [statistics] connecting to socket on port 3715

  [statistics] connected

  Job PostDataConsumer ended at 10:47 19/09/2019. [exit code=0]

Whenever i try to run the PostDataConsumer.sh file (made by Talend after I build the route) i get the following error:

Exception in thread "main" java.lang.reflect.InvocationTargetException
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.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:50)
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51)
Caused by: java.lang.IllegalArgumentException: LoggerFactory is not a Logback LoggerContext but Logback is on the classpath. Either remove Logback or the competing implementation (class org.slf4j.impl.Log4jLoggerFactory loaded from jar:file:/Users/jessevanderwolf/Documents/Projects/School/IntoData/SimpleMicroserviceUseCase/PostDataConsumer/PostDataConsumer_0.1.jar!/BOOT-INF/lib/slf4j-log4j12-1.7.5-6.0.0.jar!/). If you are using WebLogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml: org.slf4j.impl.Log4jLoggerFactory
at org.springframework.util.Assert.instanceCheckFailed(Assert.java:655)
at org.springframework.util.Assert.isInstanceOf(Assert.java:555)
at org.springframework.boot.logging.logback.LogbackLoggingSystem.getLoggerContext(LogbackLoggingSystem.java:286)
at org.springframework.boot.logging.logback.LogbackLoggingSystem.beforeInitialize(LogbackLoggingSystem.java:102)
at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationStartingEvent(LoggingApplicationListener.java:220)
at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:199)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
at org.springframework.boot.context.event.EventPublishingRunListener.starting(EventPublishingRunListener.java:69)
at org.springframework.boot.SpringApplicationRunListeners.starting(SpringApplicationRunListeners.java:48)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:302)
at microservices.postdataconsumer_0_1.PostDataConsumer.main(PostDataConsumer.java:353)
... 8 more

I've already tried the following:

1. Disable Log4j in compontents via File > Project Settings > Log4j
2. Make an exclusion like the documentation -> http://www.slf4j.org/codes.html#multiple_bindings suggests
3. use different Java jdk's [1.8.0_151, 1.8.0_171]

Hope you guys can help me out.

[Anonymous]

Hello,

Could you please post the full error stack trace here? We have a known ESB issue in V 7.2.1.

Are you running your route as MicroService jar?

Best regards

Sabrina

[JessevdW]

Hey xdshi,

I've added the stack trace to the main question.

I'm using a Talend route which contains a cMQConnectionfactory component and a cJMS componentent. It also calls a subjob. This is because the standard cHttp component in the route did not work (different issue) so I used a subjob to do a Http request using the tHttpRequest component.

I've also added the Talend project in a zipfile.

Jesse

SampleProject.zip

[Spretorius]

Hi 

Just a follow up also experiencing the same problem on ESB 7.2.1 when exporting as a micro service.jar to docker. What is the current state of the bug and is there any work around that can be used?

Regards,

[JessevdW · Accepted solution]

Seems like downloading the latest patch fixed the issue. The build where i encountered the issue 

was as follows:

Version: 7.2.1

Build id: 20190725_0259

The latest patch i downloaded via the talend portal, configured and tested the route on

was as follows:

Version: 7.2.1

Build id: 20190909_1200_patch

You can look up this in information in the studio via Talend Studio > About talend studio.

[Auser1635229904]

Spring boot automatically configures the LogBack because of the web starter. According to this documentation, we should remove the default logback module from the project