Bill Okara created LOG4J2-1535:
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Summary: KafkaAppender NullPointerException when putting the
related jars in tomcat lib
Key: LOG4J2-1535
URL: https://issues.apache.org/jira/browse/LOG4J2-1535
Project: Log4j 2
Issue Type: Improvement
Components: Appenders
Affects Versions: 2.6.2
Environment: Tomcat 7.0.70
Reporter: Bill Okara
By putting the log4j2 and kafka appender related jars in tomcat/lib (instead of
packaged in WEB-INF/lib), got NullPointerException when initializing the
log4j2.xml.
Steps to reproduce:
1) unzip the attached kafka-test-src.tar.gz, build the project with maven:
> mvn clean package
2) get all the dependency jars by:
> mvn dependency:copy-dependencies
3) copy the *.jar from $project/target/dependency/*.jar to tomcat/lib/
4) deploy the war to tomcat
5) start tomcat
Will see errors like:
Caused by: java.lang.NullPointerException at
org.apache.kafka.clients.producer.KafkaProducer.close(KafkaProducer.java:658)
at
org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:333)
at
org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:188)
at
org.apache.logging.log4j.core.appender.mom.kafka.DefaultKafkaProducerFactory.newKafkaProducer(DefaultKafkaProducerFactory.java:29)
at
org.apache.logging.log4j.core.appender.mom.kafka.KafkaManager.startup(KafkaManager.java:86)
at
org.apache.logging.log4j.core.appender.mom.kafka.KafkaAppender.start(KafkaAppender.java:96)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:247)
at
org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:496)
at
org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:566)
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