attach the catalina.out again, didn't seem to go through last time...
On Thu, Aug 18, 2016 at 4:33 PM, Bill Okara <billok...@gmail.com> wrote: > Hi, > > When trying out the log4j2 Kafka appender, it works ok if all the > log4j2/kafka-client related jars are packaged in the webapp's > WEB-INF/lib, like: > >>ls WEB-INF/lib/ > jackson-core-2.8.1.jar > log4j-core-2.6.2.jar > lz4-1.3.0.jar > kafka-clients-0.10.0.1.jar > log4j-slf4j-impl-2.6.2.jar > slf4j-api-1.7.21.jar > log4j-api-2.6.2.jar > log4j-web-2.6.2.jar > snappy-java-1.1.2.6.jar > > > But if the jars are provided in tomcat/lib (for all webapps), and each > webapp will have its own log4j2.xml (as in attached war), then when > launching the webapp, will encounter: > > ----- > 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) > --------- > > (full stack trace as in attached catalina.out) > > > To reproduce the error, simply: > 1) build the attached webapp, and deploy the output to tomcat/webapps > 2) move the WEB-INF/lib/*.jar to tomcat/lib (make sure WEB-INF/lib is > empty after move) > 3) start tomcat > > Tested with tomcat 7.0.70 > > Anyone encounter similar problem? or is this a bug? (log4j2 or > kafka-client bug?) > > > Thanks, > Bill
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