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From "Bill Okara (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LOG4J2-1535) KafkaAppender NullPointerException when putting the related jars in tomcat lib
Date Fri, 19 Aug 2016 22:08:21 GMT

     [ https://issues.apache.org/jira/browse/LOG4J2-1535?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bill Okara updated LOG4J2-1535:
-------------------------------
    Attachment: kafka-test-src.tar.gz

> 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
>         Attachments: kafka-test-src.tar.gz
>
>
> 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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