Are these startup warnings normal?

[Remko Popma <re...@gmail.com>]

If I run a simple HelloWorld log test program, with a log4j2.xml config
that has
<Configuration status="warn">

then I get _a lot_ of warnings (see below).
They seem to be generated by ResolverUtil#addIfMatching when loading
plugins.
Just wondering: has this always been the case, or is this caused by a
recent change?

C:\Users\remko\workspace\log4j-perf\bin>java -cp
.;..\lib\log4j-api-2.0-rc2-SNAPSHOT.jar;..\lib\log4j-core-2.0-rc2-SNAPSHOT.jar;..\lib\disruptor-3.2.0.jar
LOG4J2_537.HelloWorld
2014-03-24 06:48:31,491 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,493 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class'
due to a java.lang.NoClassDefFoundError with message:
com/fasterxml/jackson/core/type/TypeReference
2014-03-24 06:48:31,494 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,496 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,498 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class'
due to a java.lang.NoClassDefFoundError with message:
com/fasterxml/jackson/core/type/TypeReference
2014-03-24 06:48:31,499 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,500 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,502 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,503 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,505 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class'
due toa java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,506 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,512 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class'
due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
2014-03-24 06:48:31,626 WARN Could not examine class
'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a
java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
2014-03-24 06:48:31,634 WARN Could not examine class
'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a
java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
2014-03-24 06:48:31,638 WARN Could not examine class
'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a
java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
2014-03-24 06:48:31,644 WARN Could not examine class
'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class'
due to a java.lang.NoClassDefFoundError with message:
javax/mail/Authenticator
2014-03-24 06:48:31,669 WARN Could not examine class
'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class'
due to a java.lang.NoClassDefFoundError with message:
javax/servlet/ServletContainerInitializer
2014-03-24 06:48:31,670 WARN Could not examine class
'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due
to a java.lang.NoClassDefFoundError with message:
javax/servlet/ServletContextListener
2014-03-24 06:48:31,671 WARN Could not examine class
'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a
java.lang.NoClassDefFoundError with message: javax/servlet/Filter
2014-03-24 06:48:31,686 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,687 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class'
due to a java.lang.NoClassDefFoundError with message:
com/fasterxml/jackson/core/type/TypeReference
2014-03-24 06:48:31,689 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,690 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,691 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class'
due to a java.lang.NoClassDefFoundError with message:
com/fasterxml/jackson/core/type/TypeReference
2014-03-24 06:48:31,693 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,694 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,695 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,697 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,698 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class'
due toa java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,700 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,704 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class'
due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
2014-03-24 06:48:31,741 WARN Could not examine class
'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a
java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
2014-03-24 06:48:31,744 WARN Could not examine class
'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a
java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
2014-03-24 06:48:31,747 WARN Could not examine class
'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a
java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
2014-03-24 06:48:31,749 WARN Could not examine class
'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class'
due to a java.lang.NoClassDefFoundError with message:
javax/mail/Authenticator
2014-03-24 06:48:31,759 WARN Could not examine class
'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class'
due to a java.lang.NoClassDefFoundError with message:
javax/servlet/ServletContainerInitializer
2014-03-24 06:48:31,761 WARN Could not examine class
'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due
to a java.lang.NoClassDefFoundError with message:
javax/servlet/ServletContextListener
2014-03-24 06:48:31,763 WARN Could not examine class
'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a
java.lang.NoClassDefFoundError with message: javax/servlet/Filter
2014-03-24 06:48:31,789 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,790 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class'
due to a java.lang.NoClassDefFoundError with message:
com/fasterxml/jackson/core/type/TypeReference
2014-03-24 06:48:31,792 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,794 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,796 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class'
due to a java.lang.NoClassDefFoundError with message:
com/fasterxml/jackson/core/type/TypeReference
2014-03-24 06:48:31,798 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,800 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,801 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,803 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,804 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class'
due toa java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,805 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class'
due to a java.lang.NoClassDefFoundError with message:
javax/persistence/AttributeConverter
2014-03-24 06:48:31,808 WARN Could not examine class
'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class'
due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
2014-03-24 06:48:31,840 WARN Could not examine class
'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a
java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
2014-03-24 06:48:31,843 WARN Could not examine class
'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a
java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
2014-03-24 06:48:31,845 WARN Could not examine class
'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a
java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
2014-03-24 06:48:31,849 WARN Could not examine class
'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class'
due to a java.lang.NoClassDefFoundError with message:
javax/mail/Authenticator
2014-03-24 06:48:31,865 WARN Could not examine class
'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class'
due to a java.lang.NoClassDefFoundError with message:
javax/servlet/ServletContainerInitializer
2014-03-24 06:48:31,866 WARN Could not examine class
'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due
to a java.lang.NoClassDefFoundError with message:
javax/servlet/ServletContextListener
2014-03-24 06:48:31,868 WARN Could not examine class
'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a
java.lang.NoClassDefFoundError with message: javax/servlet/Filter
06:48:31.945 INFO  LOG4J2_537.HelloWorld 28 main - Hello, World!
C:\Users\remko\workspace\log4j-perf\bin>

Re: Are these startup warnings normal?

[Remko Popma <re...@gmail.com>]

So... has it always been like this?
I think I would have remembered, as it is quite noisy.
Could this be because of a recent change?


On Mon, Mar 24, 2014 at 7:14 AM, Matt Sicker <bo...@gmail.com> wrote:

> I noticed that today, too. From the looks of it, I don't think any of
> those warnings are a big deal. They're just indicating that those scanned
> plugins can't be used because they depend on optional dependencies. This is
> actually part of why I support using a more modular architecture over an
> optional class-based approach like we have now. In such a modular
> architecture, you'd only use the JARs containing the plugins you want
> (which should speed up plugin search).
>
> tl;dr: those warning messages look harmless and might be better off placed
> in the INFO level. That, or we could maintain a list of optional class
> names related to the optional plugins that we can filter for in those log
> messages for more information (e.g., log that certain plugins can't be
> loaded due to missing dependencies and an informative message on how to
> handle that).
>
> WARNING: OSGi rambling and brainstorming below!
>
> Then again, in an OSGi bundle interface for log4j-core (e.g.,
> log4j-core-bundle or even just use log4j-osgi as the location for this
> code), we could scan over the annotated classes (@Plugin and such),
> generate a plugins.dat (or use an existing OSGi file format like the XML
> one for declarative services; it looks rather compatible with our existing
> plugin architecture) for each bundle, and then the OSGi bundle that
> integrates them all (core bundle, not the API) can just load those XML
> files and use OSGi's declarative services management to load log4j plugins
> as necessary.
>
>
> On 23 March 2014 16:55, Remko Popma <re...@gmail.com> wrote:
>
>> If I run a simple HelloWorld log test program, with a log4j2.xml config
>> that has
>> <Configuration status="warn">
>>
>> then I get _a lot_ of warnings (see below).
>> They seem to be generated by ResolverUtil#addIfMatching when loading
>> plugins.
>> Just wondering: has this always been the case, or is this caused by a
>> recent change?
>>
>> C:\Users\remko\workspace\log4j-perf\bin>java -cp
>> .;..\lib\log4j-api-2.0-rc2-SNAPSHOT.jar;..\lib\log4j-core-2.0-rc2-SNAPSHOT.jar;..\lib\disruptor-3.2.0.jar
>> LOG4J2_537.HelloWorld
>> 2014-03-24 06:48:31,491 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,493 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> com/fasterxml/jackson/core/type/TypeReference
>> 2014-03-24 06:48:31,494 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,496 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,498 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> com/fasterxml/jackson/core/type/TypeReference
>> 2014-03-24 06:48:31,499 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,500 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,502 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,503 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,505 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class'
>> due toa java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,506 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,512 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class'
>> due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
>> 2014-03-24 06:48:31,626 WARN Could not examine class
>> 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a
>> java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
>> 2014-03-24 06:48:31,634 WARN Could not examine class
>> 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a
>> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>> 2014-03-24 06:48:31,638 WARN Could not examine class
>> 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a
>> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>> 2014-03-24 06:48:31,644 WARN Could not examine class
>> 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/mail/Authenticator
>> 2014-03-24 06:48:31,669 WARN Could not examine class
>> 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/servlet/ServletContainerInitializer
>> 2014-03-24 06:48:31,670 WARN Could not examine class
>> 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due
>> to a java.lang.NoClassDefFoundError with message:
>> javax/servlet/ServletContextListener
>> 2014-03-24 06:48:31,671 WARN Could not examine class
>> 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a
>> java.lang.NoClassDefFoundError with message: javax/servlet/Filter
>> 2014-03-24 06:48:31,686 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,687 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> com/fasterxml/jackson/core/type/TypeReference
>> 2014-03-24 06:48:31,689 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,690 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,691 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> com/fasterxml/jackson/core/type/TypeReference
>> 2014-03-24 06:48:31,693 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,694 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,695 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,697 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,698 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class'
>> due toa java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,700 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,704 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class'
>> due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
>> 2014-03-24 06:48:31,741 WARN Could not examine class
>> 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a
>> java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
>> 2014-03-24 06:48:31,744 WARN Could not examine class
>> 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a
>> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>> 2014-03-24 06:48:31,747 WARN Could not examine class
>> 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a
>> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>> 2014-03-24 06:48:31,749 WARN Could not examine class
>> 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/mail/Authenticator
>> 2014-03-24 06:48:31,759 WARN Could not examine class
>> 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/servlet/ServletContainerInitializer
>> 2014-03-24 06:48:31,761 WARN Could not examine class
>> 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due
>> to a java.lang.NoClassDefFoundError with message:
>> javax/servlet/ServletContextListener
>> 2014-03-24 06:48:31,763 WARN Could not examine class
>> 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a
>> java.lang.NoClassDefFoundError with message: javax/servlet/Filter
>> 2014-03-24 06:48:31,789 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,790 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> com/fasterxml/jackson/core/type/TypeReference
>> 2014-03-24 06:48:31,792 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,794 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,796 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> com/fasterxml/jackson/core/type/TypeReference
>> 2014-03-24 06:48:31,798 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,800 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,801 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,803 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,804 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class'
>> due toa java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,805 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/persistence/AttributeConverter
>> 2014-03-24 06:48:31,808 WARN Could not examine class
>> 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class'
>> due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
>> 2014-03-24 06:48:31,840 WARN Could not examine class
>> 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a
>> java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
>> 2014-03-24 06:48:31,843 WARN Could not examine class
>> 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a
>> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>> 2014-03-24 06:48:31,845 WARN Could not examine class
>> 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a
>> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>> 2014-03-24 06:48:31,849 WARN Could not examine class
>> 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/mail/Authenticator
>> 2014-03-24 06:48:31,865 WARN Could not examine class
>> 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class'
>> due to a java.lang.NoClassDefFoundError with message:
>> javax/servlet/ServletContainerInitializer
>> 2014-03-24 06:48:31,866 WARN Could not examine class
>> 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due
>> to a java.lang.NoClassDefFoundError with message:
>> javax/servlet/ServletContextListener
>> 2014-03-24 06:48:31,868 WARN Could not examine class
>> 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a
>> java.lang.NoClassDefFoundError with message: javax/servlet/Filter
>> 06:48:31.945 INFO  LOG4J2_537.HelloWorld 28 main - Hello, World!
>> C:\Users\remko\workspace\log4j-perf\bin>
>>
>
>
>
> --
> Matt Sicker <bo...@gmail.com>
>

Re: Are these startup warnings normal?

[Matt Sicker <bo...@gmail.com>]

I noticed that today, too. From the looks of it, I don't think any of those
warnings are a big deal. They're just indicating that those scanned plugins
can't be used because they depend on optional dependencies. This is
actually part of why I support using a more modular architecture over an
optional class-based approach like we have now. In such a modular
architecture, you'd only use the JARs containing the plugins you want
(which should speed up plugin search).

tl;dr: those warning messages look harmless and might be better off placed
in the INFO level. That, or we could maintain a list of optional class
names related to the optional plugins that we can filter for in those log
messages for more information (e.g., log that certain plugins can't be
loaded due to missing dependencies and an informative message on how to
handle that).

WARNING: OSGi rambling and brainstorming below!

Then again, in an OSGi bundle interface for log4j-core (e.g.,
log4j-core-bundle or even just use log4j-osgi as the location for this
code), we could scan over the annotated classes (@Plugin and such),
generate a plugins.dat (or use an existing OSGi file format like the XML
one for declarative services; it looks rather compatible with our existing
plugin architecture) for each bundle, and then the OSGi bundle that
integrates them all (core bundle, not the API) can just load those XML
files and use OSGi's declarative services management to load log4j plugins
as necessary.


On 23 March 2014 16:55, Remko Popma <re...@gmail.com> wrote:

> If I run a simple HelloWorld log test program, with a log4j2.xml config
> that has
> <Configuration status="warn">
>
> then I get _a lot_ of warnings (see below).
> They seem to be generated by ResolverUtil#addIfMatching when loading
> plugins.
> Just wondering: has this always been the case, or is this caused by a
> recent change?
>
> C:\Users\remko\workspace\log4j-perf\bin>java -cp
> .;..\lib\log4j-api-2.0-rc2-SNAPSHOT.jar;..\lib\log4j-core-2.0-rc2-SNAPSHOT.jar;..\lib\disruptor-3.2.0.jar
> LOG4J2_537.HelloWorld
> 2014-03-24 06:48:31,491 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,493 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> com/fasterxml/jackson/core/type/TypeReference
> 2014-03-24 06:48:31,494 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,496 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,498 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> com/fasterxml/jackson/core/type/TypeReference
> 2014-03-24 06:48:31,499 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,500 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,502 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,503 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,505 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class'
> due toa java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,506 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,512 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class'
> due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
> 2014-03-24 06:48:31,626 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a
> java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
> 2014-03-24 06:48:31,634 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a
> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> 2014-03-24 06:48:31,638 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a
> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> 2014-03-24 06:48:31,644 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/mail/Authenticator
> 2014-03-24 06:48:31,669 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/servlet/ServletContainerInitializer
> 2014-03-24 06:48:31,670 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due
> to a java.lang.NoClassDefFoundError with message:
> javax/servlet/ServletContextListener
> 2014-03-24 06:48:31,671 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a
> java.lang.NoClassDefFoundError with message: javax/servlet/Filter
> 2014-03-24 06:48:31,686 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,687 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> com/fasterxml/jackson/core/type/TypeReference
> 2014-03-24 06:48:31,689 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,690 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,691 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> com/fasterxml/jackson/core/type/TypeReference
> 2014-03-24 06:48:31,693 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,694 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,695 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,697 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,698 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class'
> due toa java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,700 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,704 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class'
> due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
> 2014-03-24 06:48:31,741 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a
> java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
> 2014-03-24 06:48:31,744 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a
> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> 2014-03-24 06:48:31,747 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a
> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> 2014-03-24 06:48:31,749 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/mail/Authenticator
> 2014-03-24 06:48:31,759 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/servlet/ServletContainerInitializer
> 2014-03-24 06:48:31,761 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due
> to a java.lang.NoClassDefFoundError with message:
> javax/servlet/ServletContextListener
> 2014-03-24 06:48:31,763 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a
> java.lang.NoClassDefFoundError with message: javax/servlet/Filter
> 2014-03-24 06:48:31,789 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,790 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> com/fasterxml/jackson/core/type/TypeReference
> 2014-03-24 06:48:31,792 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,794 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,796 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> com/fasterxml/jackson/core/type/TypeReference
> 2014-03-24 06:48:31,798 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,800 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,801 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,803 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,804 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class'
> due toa java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,805 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,808 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class'
> due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
> 2014-03-24 06:48:31,840 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a
> java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
> 2014-03-24 06:48:31,843 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a
> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> 2014-03-24 06:48:31,845 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a
> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> 2014-03-24 06:48:31,849 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/mail/Authenticator
> 2014-03-24 06:48:31,865 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/servlet/ServletContainerInitializer
> 2014-03-24 06:48:31,866 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due
> to a java.lang.NoClassDefFoundError with message:
> javax/servlet/ServletContextListener
> 2014-03-24 06:48:31,868 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a
> java.lang.NoClassDefFoundError with message: javax/servlet/Filter
> 06:48:31.945 INFO  LOG4J2_537.HelloWorld 28 main - Hello, World!
> C:\Users\remko\workspace\log4j-perf\bin>
>



-- 
Matt Sicker <bo...@gmail.com>

Re: Are these startup warnings normal?

[Ralph Goers <ra...@dslextreme.com>]

I am looking at this again because the build has become very noisy.  These messages are all coming from ResolverUtil.  ResolverUtil is in the list of “verbose classes” that are only supposed to log at error even if status=“debug” is specified unless the verbose attribute is specified. It appears that this suppression is no longer working properly and needs to be fixed.  In looking at StatusConfiguration and XMLConfiguration though I am not sure why this isn’t working properly.

Ralph

On Mar 23, 2014, at 3:35 PM, Remko Popma <re...@gmail.com> wrote:

> Understood, thanks. If this has always been the behaviour then there is no reason to change it now.
> -Remko
> 
> 
> On Mon, Mar 24, 2014 at 7:25 AM, Ralph Goers <ra...@dslextreme.com> wrote:
> That warning message has been present since the first commit.  However, I don’t recall ever seeing it before. I guess that is because I usually run at error level.
> 
> The warning makes sense as it is basically saying the plugin won’t work due to a missing dependency.  Can you think of a better way to deal with this?
> 
> Ralph
> 
> 
> On Mar 23, 2014, at 2:55 PM, Remko Popma <re...@gmail.com> wrote:
> 
> > If I run a simple HelloWorld log test program, with a log4j2.xml config that has
> > <Configuration status="warn">
> >
> > then I get _a lot_ of warnings (see below).
> > They seem to be generated by ResolverUtil#addIfMatching when loading plugins.
> > Just wondering: has this always been the case, or is this caused by a recent change?
> >
> > C:\Users\remko\workspace\log4j-perf\bin>java -cp .;..\lib\log4j-api-2.0-rc2-SNAPSHOT.jar;..\lib\log4j-core-2.0-rc2-SNAPSHOT.jar;..\lib\disruptor-3.2.0.jar LOG4J2_537.HelloWorld
> > 2014-03-24 06:48:31,491 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,493 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,494 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,496 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,498 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,499 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,500 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,502 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,503 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,505 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class' due toa java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,506 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,512 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class' due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
> > 2014-03-24 06:48:31,626 WARN Could not examine class 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
> > 2014-03-24 06:48:31,634 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,638 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,644 WARN Could not examine class 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class' due to a java.lang.NoClassDefFoundError with message: javax/mail/Authenticator
> > 2014-03-24 06:48:31,669 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContainerInitializer
> > 2014-03-24 06:48:31,670 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContextListener
> > 2014-03-24 06:48:31,671 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/Filter
> > 2014-03-24 06:48:31,686 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,687 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,689 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,690 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,691 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,693 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,694 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,695 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,697 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,698 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class' due toa java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,700 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,704 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class' due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
> > 2014-03-24 06:48:31,741 WARN Could not examine class 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
> > 2014-03-24 06:48:31,744 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,747 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,749 WARN Could not examine class 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class' due to a java.lang.NoClassDefFoundError with message: javax/mail/Authenticator
> > 2014-03-24 06:48:31,759 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContainerInitializer
> > 2014-03-24 06:48:31,761 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContextListener
> > 2014-03-24 06:48:31,763 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/Filter
> > 2014-03-24 06:48:31,789 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,790 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,792 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,794 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,796 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,798 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,800 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,801 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,803 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,804 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class' due toa java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,805 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,808 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class' due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
> > 2014-03-24 06:48:31,840 WARN Could not examine class 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
> > 2014-03-24 06:48:31,843 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,845 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,849 WARN Could not examine class 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class' due to a java.lang.NoClassDefFoundError with message: javax/mail/Authenticator
> > 2014-03-24 06:48:31,865 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContainerInitializer
> > 2014-03-24 06:48:31,866 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContextListener
> > 2014-03-24 06:48:31,868 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/Filter
> > 06:48:31.945 INFO  LOG4J2_537.HelloWorld 28 main - Hello, World!
> > C:\Users\remko\workspace\log4j-perf\bin>
> 
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: log4j-dev-unsubscribe@logging.apache.org
> For additional commands, e-mail: log4j-dev-help@logging.apache.org
> 
> 

Re: Are these startup warnings normal?

[Remko Popma <re...@gmail.com>]

Thanks for taking the time to look at this. I've been swamped at work recently and unable to contribute much to log4j at the moment...
Remko

Sent from my iPhone

> On 2014/04/07, at 7:45, Ralph Goers <ra...@dslextreme.com> wrote:
> 
> It is a bug in StatusLogger.getStackTraceElement.
> 
> Ralph
> 
>> On Apr 6, 2014, at 3:37 PM, Ralph Goers <ra...@dslextreme.com> wrote:
>> 
>> I’m stepping through this in the debugger and the reason it isn’t working is that the caller of the log statement no longer shows up properly as ResolverUtil but is instead AbstractLoggerProvider.
>> 
>> Ralph
>> 
>>> On Mar 23, 2014, at 3:35 PM, Remko Popma <re...@gmail.com> wrote:
>>> 
>>> Understood, thanks. If this has always been the behaviour then there is no reason to change it now.
>>> -Remko
>>> 
>>> 
>>>> On Mon, Mar 24, 2014 at 7:25 AM, Ralph Goers <ra...@dslextreme.com> wrote:
>>>> That warning message has been present since the first commit.  However, I don’t recall ever seeing it before. I guess that is because I usually run at error level.
>>>> 
>>>> The warning makes sense as it is basically saying the plugin won’t work due to a missing dependency.  Can you think of a better way to deal with this?
>>>> 
>>>> Ralph
>>>> 
>>>> 
>>>> On Mar 23, 2014, at 2:55 PM, Remko Popma <re...@gmail.com> wrote:
>>>> 
>>>> > If I run a simple HelloWorld log test program, with a log4j2.xml config that has
>>>> > <Configuration status="warn">
>>>> >
>>>> > then I get _a lot_ of warnings (see below).
>>>> > They seem to be generated by ResolverUtil#addIfMatching when loading plugins.
>>>> > Just wondering: has this always been the case, or is this caused by a recent change?
>>>> >
>>>> > C:\Users\remko\workspace\log4j-perf\bin>java -cp .;..\lib\log4j-api-2.0-rc2-SNAPSHOT.jar;..\lib\log4j-core-2.0-rc2-SNAPSHOT.jar;..\lib\disruptor-3.2.0.jar LOG4J2_537.HelloWorld
>>>> > 2014-03-24 06:48:31,491 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,493 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
>>>> > 2014-03-24 06:48:31,494 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,496 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,498 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
>>>> > 2014-03-24 06:48:31,499 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,500 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,502 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,503 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,505 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class' due toa java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,506 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,512 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class' due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
>>>> > 2014-03-24 06:48:31,626 WARN Could not examine class 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
>>>> > 2014-03-24 06:48:31,634 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>>>> > 2014-03-24 06:48:31,638 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>>>> > 2014-03-24 06:48:31,644 WARN Could not examine class 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class' due to a java.lang.NoClassDefFoundError with message: javax/mail/Authenticator
>>>> > 2014-03-24 06:48:31,669 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContainerInitializer
>>>> > 2014-03-24 06:48:31,670 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContextListener
>>>> > 2014-03-24 06:48:31,671 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/Filter
>>>> > 2014-03-24 06:48:31,686 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,687 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
>>>> > 2014-03-24 06:48:31,689 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,690 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,691 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
>>>> > 2014-03-24 06:48:31,693 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,694 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,695 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,697 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,698 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class' due toa java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,700 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,704 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class' due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
>>>> > 2014-03-24 06:48:31,741 WARN Could not examine class 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
>>>> > 2014-03-24 06:48:31,744 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>>>> > 2014-03-24 06:48:31,747 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>>>> > 2014-03-24 06:48:31,749 WARN Could not examine class 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class' due to a java.lang.NoClassDefFoundError with message: javax/mail/Authenticator
>>>> > 2014-03-24 06:48:31,759 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContainerInitializer
>>>> > 2014-03-24 06:48:31,761 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContextListener
>>>> > 2014-03-24 06:48:31,763 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/Filter
>>>> > 2014-03-24 06:48:31,789 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,790 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
>>>> > 2014-03-24 06:48:31,792 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,794 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,796 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
>>>> > 2014-03-24 06:48:31,798 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,800 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,801 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,803 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,804 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class' due toa java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,805 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>>>> > 2014-03-24 06:48:31,808 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class' due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
>>>> > 2014-03-24 06:48:31,840 WARN Could not examine class 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
>>>> > 2014-03-24 06:48:31,843 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>>>> > 2014-03-24 06:48:31,845 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>>>> > 2014-03-24 06:48:31,849 WARN Could not examine class 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class' due to a java.lang.NoClassDefFoundError with message: javax/mail/Authenticator
>>>> > 2014-03-24 06:48:31,865 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContainerInitializer
>>>> > 2014-03-24 06:48:31,866 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContextListener
>>>> > 2014-03-24 06:48:31,868 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/Filter
>>>> > 06:48:31.945 INFO  LOG4J2_537.HelloWorld 28 main - Hello, World!
>>>> > C:\Users\remko\workspace\log4j-perf\bin>
>>>> 
>>>> 
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: log4j-dev-unsubscribe@logging.apache.org
>>>> For additional commands, e-mail: log4j-dev-help@logging.apache.org
> 

Re: Are these startup warnings normal?

[Ralph Goers <ra...@dslextreme.com>]

It is a bug in StatusLogger.getStackTraceElement.

Ralph

On Apr 6, 2014, at 3:37 PM, Ralph Goers <ra...@dslextreme.com> wrote:

> I’m stepping through this in the debugger and the reason it isn’t working is that the caller of the log statement no longer shows up properly as ResolverUtil but is instead AbstractLoggerProvider.
> 
> Ralph
> 
> On Mar 23, 2014, at 3:35 PM, Remko Popma <re...@gmail.com> wrote:
> 
>> Understood, thanks. If this has always been the behaviour then there is no reason to change it now.
>> -Remko
>> 
>> 
>> On Mon, Mar 24, 2014 at 7:25 AM, Ralph Goers <ra...@dslextreme.com> wrote:
>> That warning message has been present since the first commit.  However, I don’t recall ever seeing it before. I guess that is because I usually run at error level.
>> 
>> The warning makes sense as it is basically saying the plugin won’t work due to a missing dependency.  Can you think of a better way to deal with this?
>> 
>> Ralph
>> 
>> 
>> On Mar 23, 2014, at 2:55 PM, Remko Popma <re...@gmail.com> wrote:
>> 
>> > If I run a simple HelloWorld log test program, with a log4j2.xml config that has
>> > <Configuration status="warn">
>> >
>> > then I get _a lot_ of warnings (see below).
>> > They seem to be generated by ResolverUtil#addIfMatching when loading plugins.
>> > Just wondering: has this always been the case, or is this caused by a recent change?
>> >
>> > C:\Users\remko\workspace\log4j-perf\bin>java -cp .;..\lib\log4j-api-2.0-rc2-SNAPSHOT.jar;..\lib\log4j-core-2.0-rc2-SNAPSHOT.jar;..\lib\disruptor-3.2.0.jar LOG4J2_537.HelloWorld
>> > 2014-03-24 06:48:31,491 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,493 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
>> > 2014-03-24 06:48:31,494 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,496 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,498 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
>> > 2014-03-24 06:48:31,499 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,500 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,502 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,503 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,505 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class' due toa java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,506 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,512 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class' due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
>> > 2014-03-24 06:48:31,626 WARN Could not examine class 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
>> > 2014-03-24 06:48:31,634 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>> > 2014-03-24 06:48:31,638 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>> > 2014-03-24 06:48:31,644 WARN Could not examine class 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class' due to a java.lang.NoClassDefFoundError with message: javax/mail/Authenticator
>> > 2014-03-24 06:48:31,669 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContainerInitializer
>> > 2014-03-24 06:48:31,670 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContextListener
>> > 2014-03-24 06:48:31,671 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/Filter
>> > 2014-03-24 06:48:31,686 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,687 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
>> > 2014-03-24 06:48:31,689 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,690 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,691 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
>> > 2014-03-24 06:48:31,693 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,694 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,695 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,697 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,698 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class' due toa java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,700 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,704 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class' due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
>> > 2014-03-24 06:48:31,741 WARN Could not examine class 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
>> > 2014-03-24 06:48:31,744 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>> > 2014-03-24 06:48:31,747 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>> > 2014-03-24 06:48:31,749 WARN Could not examine class 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class' due to a java.lang.NoClassDefFoundError with message: javax/mail/Authenticator
>> > 2014-03-24 06:48:31,759 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContainerInitializer
>> > 2014-03-24 06:48:31,761 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContextListener
>> > 2014-03-24 06:48:31,763 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/Filter
>> > 2014-03-24 06:48:31,789 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,790 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
>> > 2014-03-24 06:48:31,792 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,794 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,796 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
>> > 2014-03-24 06:48:31,798 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,800 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,801 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,803 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,804 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class' due toa java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,805 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
>> > 2014-03-24 06:48:31,808 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class' due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
>> > 2014-03-24 06:48:31,840 WARN Could not examine class 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
>> > 2014-03-24 06:48:31,843 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>> > 2014-03-24 06:48:31,845 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
>> > 2014-03-24 06:48:31,849 WARN Could not examine class 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class' due to a java.lang.NoClassDefFoundError with message: javax/mail/Authenticator
>> > 2014-03-24 06:48:31,865 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContainerInitializer
>> > 2014-03-24 06:48:31,866 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContextListener
>> > 2014-03-24 06:48:31,868 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/Filter
>> > 06:48:31.945 INFO  LOG4J2_537.HelloWorld 28 main - Hello, World!
>> > C:\Users\remko\workspace\log4j-perf\bin>
>> 
>> 
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: log4j-dev-unsubscribe@logging.apache.org
>> For additional commands, e-mail: log4j-dev-help@logging.apache.org
>> 
>> 
> 

Re: Are these startup warnings normal?

[Ralph Goers <ra...@dslextreme.com>]

I’m stepping through this in the debugger and the reason it isn’t working is that the caller of the log statement no longer shows up properly as ResolverUtil but is instead AbstractLoggerProvider.

Ralph

On Mar 23, 2014, at 3:35 PM, Remko Popma <re...@gmail.com> wrote:

> Understood, thanks. If this has always been the behaviour then there is no reason to change it now.
> -Remko
> 
> 
> On Mon, Mar 24, 2014 at 7:25 AM, Ralph Goers <ra...@dslextreme.com> wrote:
> That warning message has been present since the first commit.  However, I don’t recall ever seeing it before. I guess that is because I usually run at error level.
> 
> The warning makes sense as it is basically saying the plugin won’t work due to a missing dependency.  Can you think of a better way to deal with this?
> 
> Ralph
> 
> 
> On Mar 23, 2014, at 2:55 PM, Remko Popma <re...@gmail.com> wrote:
> 
> > If I run a simple HelloWorld log test program, with a log4j2.xml config that has
> > <Configuration status="warn">
> >
> > then I get _a lot_ of warnings (see below).
> > They seem to be generated by ResolverUtil#addIfMatching when loading plugins.
> > Just wondering: has this always been the case, or is this caused by a recent change?
> >
> > C:\Users\remko\workspace\log4j-perf\bin>java -cp .;..\lib\log4j-api-2.0-rc2-SNAPSHOT.jar;..\lib\log4j-core-2.0-rc2-SNAPSHOT.jar;..\lib\disruptor-3.2.0.jar LOG4J2_537.HelloWorld
> > 2014-03-24 06:48:31,491 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,493 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,494 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,496 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,498 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,499 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,500 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,502 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,503 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,505 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class' due toa java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,506 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,512 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class' due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
> > 2014-03-24 06:48:31,626 WARN Could not examine class 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
> > 2014-03-24 06:48:31,634 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,638 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,644 WARN Could not examine class 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class' due to a java.lang.NoClassDefFoundError with message: javax/mail/Authenticator
> > 2014-03-24 06:48:31,669 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContainerInitializer
> > 2014-03-24 06:48:31,670 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContextListener
> > 2014-03-24 06:48:31,671 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/Filter
> > 2014-03-24 06:48:31,686 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,687 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,689 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,690 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,691 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,693 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,694 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,695 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,697 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,698 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class' due toa java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,700 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,704 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class' due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
> > 2014-03-24 06:48:31,741 WARN Could not examine class 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
> > 2014-03-24 06:48:31,744 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,747 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,749 WARN Could not examine class 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class' due to a java.lang.NoClassDefFoundError with message: javax/mail/Authenticator
> > 2014-03-24 06:48:31,759 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContainerInitializer
> > 2014-03-24 06:48:31,761 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContextListener
> > 2014-03-24 06:48:31,763 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/Filter
> > 2014-03-24 06:48:31,789 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,790 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,792 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,794 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,796 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,798 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,800 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,801 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,803 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,804 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class' due toa java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,805 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,808 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class' due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
> > 2014-03-24 06:48:31,840 WARN Could not examine class 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
> > 2014-03-24 06:48:31,843 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,845 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,849 WARN Could not examine class 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class' due to a java.lang.NoClassDefFoundError with message: javax/mail/Authenticator
> > 2014-03-24 06:48:31,865 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContainerInitializer
> > 2014-03-24 06:48:31,866 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContextListener
> > 2014-03-24 06:48:31,868 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/Filter
> > 06:48:31.945 INFO  LOG4J2_537.HelloWorld 28 main - Hello, World!
> > C:\Users\remko\workspace\log4j-perf\bin>
> 
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: log4j-dev-unsubscribe@logging.apache.org
> For additional commands, e-mail: log4j-dev-help@logging.apache.org
> 
> 

Re: Are these startup warnings normal?

[Remko Popma <re...@gmail.com>]

Understood, thanks. If this has always been the behaviour then there is no
reason to change it now.
-Remko


On Mon, Mar 24, 2014 at 7:25 AM, Ralph Goers <ra...@dslextreme.com>wrote:

> That warning message has been present since the first commit.  However, I
> don't recall ever seeing it before. I guess that is because I usually run
> at error level.
>
> The warning makes sense as it is basically saying the plugin won't work
> due to a missing dependency.  Can you think of a better way to deal with
> this?
>
> Ralph
>
>
> On Mar 23, 2014, at 2:55 PM, Remko Popma <re...@gmail.com> wrote:
>
> > If I run a simple HelloWorld log test program, with a log4j2.xml config
> that has
> > <Configuration status="warn">
> >
> > then I get _a lot_ of warnings (see below).
> > They seem to be generated by ResolverUtil#addIfMatching when loading
> plugins.
> > Just wondering: has this always been the case, or is this caused by a
> recent change?
> >
> > C:\Users\remko\workspace\log4j-perf\bin>java -cp
> .;..\lib\log4j-api-2.0-rc2-SNAPSHOT.jar;..\lib\log4j-core-2.0-rc2-SNAPSHOT.jar;..\lib\disruptor-3.2.0.jar
> LOG4J2_537.HelloWorld
> > 2014-03-24 06:48:31,491 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,493 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,494 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,496 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,498 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,499 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,500 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,502 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,503 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,505 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class'
> due toa java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,506 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,512 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class'
> due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
> > 2014-03-24 06:48:31,626 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a
> java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
> > 2014-03-24 06:48:31,634 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a
> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,638 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a
> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,644 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/mail/Authenticator
> > 2014-03-24 06:48:31,669 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/servlet/ServletContainerInitializer
> > 2014-03-24 06:48:31,670 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due
> to a java.lang.NoClassDefFoundError with message:
> javax/servlet/ServletContextListener
> > 2014-03-24 06:48:31,671 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a
> java.lang.NoClassDefFoundError with message: javax/servlet/Filter
> > 2014-03-24 06:48:31,686 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,687 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,689 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,690 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,691 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,693 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,694 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,695 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,697 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,698 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class'
> due toa java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,700 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,704 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class'
> due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
> > 2014-03-24 06:48:31,741 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a
> java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
> > 2014-03-24 06:48:31,744 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a
> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,747 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a
> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,749 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/mail/Authenticator
> > 2014-03-24 06:48:31,759 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/servlet/ServletContainerInitializer
> > 2014-03-24 06:48:31,761 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due
> to a java.lang.NoClassDefFoundError with message:
> javax/servlet/ServletContextListener
> > 2014-03-24 06:48:31,763 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a
> java.lang.NoClassDefFoundError with message: javax/servlet/Filter
> > 2014-03-24 06:48:31,789 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,790 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,792 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,794 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,796 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> com/fasterxml/jackson/core/type/TypeReference
> > 2014-03-24 06:48:31,798 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,800 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,801 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,803 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,804 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class'
> due toa java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,805 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/persistence/AttributeConverter
> > 2014-03-24 06:48:31,808 WARN Could not examine class
> 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class'
> due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
> > 2014-03-24 06:48:31,840 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a
> java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
> > 2014-03-24 06:48:31,843 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a
> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,845 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a
> java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> > 2014-03-24 06:48:31,849 WARN Could not examine class
> 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/mail/Authenticator
> > 2014-03-24 06:48:31,865 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class'
> due to a java.lang.NoClassDefFoundError with message:
> javax/servlet/ServletContainerInitializer
> > 2014-03-24 06:48:31,866 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due
> to a java.lang.NoClassDefFoundError with message:
> javax/servlet/ServletContextListener
> > 2014-03-24 06:48:31,868 WARN Could not examine class
> 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a
> java.lang.NoClassDefFoundError with message: javax/servlet/Filter
> > 06:48:31.945 INFO  LOG4J2_537.HelloWorld 28 main - Hello, World!
> > C:\Users\remko\workspace\log4j-perf\bin>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: log4j-dev-unsubscribe@logging.apache.org
> For additional commands, e-mail: log4j-dev-help@logging.apache.org
>
>

Re: Are these startup warnings normal?

[Ralph Goers <ra...@dslextreme.com>]

That warning message has been present since the first commit.  However, I don’t recall ever seeing it before. I guess that is because I usually run at error level.  

The warning makes sense as it is basically saying the plugin won’t work due to a missing dependency.  Can you think of a better way to deal with this?

Ralph


On Mar 23, 2014, at 2:55 PM, Remko Popma <re...@gmail.com> wrote:

> If I run a simple HelloWorld log test program, with a log4j2.xml config that has
> <Configuration status="warn">
> 
> then I get _a lot_ of warnings (see below).
> They seem to be generated by ResolverUtil#addIfMatching when loading plugins.
> Just wondering: has this always been the case, or is this caused by a recent change?
> 
> C:\Users\remko\workspace\log4j-perf\bin>java -cp .;..\lib\log4j-api-2.0-rc2-SNAPSHOT.jar;..\lib\log4j-core-2.0-rc2-SNAPSHOT.jar;..\lib\disruptor-3.2.0.jar LOG4J2_537.HelloWorld
> 2014-03-24 06:48:31,491 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,493 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> 2014-03-24 06:48:31,494 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,496 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,498 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> 2014-03-24 06:48:31,499 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,500 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,502 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,503 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,505 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class' due toa java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,506 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,512 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class' due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
> 2014-03-24 06:48:31,626 WARN Could not examine class 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
> 2014-03-24 06:48:31,634 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> 2014-03-24 06:48:31,638 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> 2014-03-24 06:48:31,644 WARN Could not examine class 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class' due to a java.lang.NoClassDefFoundError with message: javax/mail/Authenticator
> 2014-03-24 06:48:31,669 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContainerInitializer
> 2014-03-24 06:48:31,670 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContextListener
> 2014-03-24 06:48:31,671 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/Filter
> 2014-03-24 06:48:31,686 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,687 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> 2014-03-24 06:48:31,689 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,690 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,691 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> 2014-03-24 06:48:31,693 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,694 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,695 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,697 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,698 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class' due toa java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,700 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,704 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class' due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
> 2014-03-24 06:48:31,741 WARN Could not examine class 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
> 2014-03-24 06:48:31,744 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> 2014-03-24 06:48:31,747 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> 2014-03-24 06:48:31,749 WARN Could not examine class 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class' due to a java.lang.NoClassDefFoundError with message: javax/mail/Authenticator
> 2014-03-24 06:48:31,759 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContainerInitializer
> 2014-03-24 06:48:31,761 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContextListener
> 2014-03-24 06:48:31,763 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/Filter
> 2014-03-24 06:48:31,789 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,790 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> 2014-03-24 06:48:31,792 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextMapJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,794 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,796 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter$1.class' due to a java.lang.NoClassDefFoundError with message: com/fasterxml/jackson/core/type/TypeReference
> 2014-03-24 06:48:31,798 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ContextStackJsonAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,800 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/LevelAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,801 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MarkerAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,803 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/MessageAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,804 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/StackTraceElementAttributeConverter.class' due toa java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,805 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/jpa/converter/ThrowableAttributeConverter.class' due to a java.lang.NoClassDefFoundError with message: javax/persistence/AttributeConverter
> 2014-03-24 06:48:31,808 WARN Could not examine class 'org/apache/logging/log4j/core/appender/db/nosql/mongodb/MongoDBConnection$1.class' due to a java.lang.NoClassDefFoundError with message: org/bson/Transformer
> 2014-03-24 06:48:31,840 WARN Could not examine class 'org/apache/logging/log4j/core/net/AbstractJMSReceiver.class' due to a java.lang.NoClassDefFoundError withmessage: javax/jms/MessageListener
> 2014-03-24 06:48:31,843 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSQueueReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> 2014-03-24 06:48:31,845 WARN Could not examine class 'org/apache/logging/log4j/core/net/JMSTopicReceiver.class' due to a java.lang.NoClassDefFoundError with message: javax/jms/MessageListener
> 2014-03-24 06:48:31,849 WARN Could not examine class 'org/apache/logging/log4j/core/net/SMTPManager$SMTPManagerFactory$1.class' due to a java.lang.NoClassDefFoundError with message: javax/mail/Authenticator
> 2014-03-24 06:48:31,865 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContainerInitializer.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContainerInitializer
> 2014-03-24 06:48:31,866 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletContextListener.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/ServletContextListener
> 2014-03-24 06:48:31,868 WARN Could not examine class 'org/apache/logging/log4j/core/web/Log4jServletFilter.class' due to a java.lang.NoClassDefFoundError with message: javax/servlet/Filter
> 06:48:31.945 INFO  LOG4J2_537.HelloWorld 28 main - Hello, World!
> C:\Users\remko\workspace\log4j-perf\bin>


---------------------------------------------------------------------
To unsubscribe, e-mail: log4j-dev-unsubscribe@logging.apache.org
For additional commands, e-mail: log4j-dev-help@logging.apache.org