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Mikael Ståldal commented on LOG4J2-1493: ---------------------------------------- Yes, might be some kind of race condition when the message is used before being properly initialized. > Cannot set all loggers as async when using JsonLayout > ----------------------------------------------------- > > Key: LOG4J2-1493 > URL: https://issues.apache.org/jira/browse/LOG4J2-1493 > Project: Log4j 2 > Issue Type: Bug > Components: Layouts > Affects Versions: 2.6.2 > Environment: all > Reporter: Jose Leon > > When I set this property: > {noformat} > -DLog4jContextSelector=org.apache.logging.log4j.core.async.AsyncLoggerContextSelector > {noformat} > And use KafkaAppender like so: > {code:xml} > <?xml version="1.0" encoding="UTF-8" ?> > <Configuration status="warn"> > <Appenders> > <Kafka name="kafka" topic="${sys:kafka.topic}"> > <JsonLayout properties="true" locationInfo="true" complete="false" > compact="true" /> > <Property name="bootstrap.servers">${sys:kafka.destinations}</Property> > <Property name="hostname">${sys:hostname}</Property> > <Property name="port">${sys:port}</Property> > <Property name="instance">${sys:instance}</Property> > </Kafka> > </Appenders> > <Loggers> > <Logger name="org.apache.kafka" level="INFO" /> > <Root level="${sys:log.level}"> > <AppenderRef ref="kafka"/> > </Root> > </Loggers> > </Configuration> > {code} > I get this stacktrace and no appenders work; with the goal being to get the > KafkaAppender working at minimum > {noformat} > 2016-08-03 20:31:15,607 Log4j2-AsyncLogger[AsyncContext@764c12b6]1 ERROR > com.fasterxml.jackson.databind.JsonMappingException: (was > java.lang.NullPointerException) (through reference chain: > org.apache.logging.log4j.core.async.RingBufferLogEvent["formattedMessage"]) > com.fasterxml.jackson.databind.JsonMappingException: (was > java.lang.NullPointerException) (through reference chain: > org.apache.logging.log4j.core.async.RingBufferLogEvent["formattedMessage"]) > at > com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:210) > at > com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:177) > at > com.fasterxml.jackson.databind.ser.std.StdSerializer.wrapAndThrow(StdSerializer.java:190) > at > com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFieldsFiltered(BeanSerializerBase.java:724) > at > com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:154) > at > com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:129) > at > com.fasterxml.jackson.databind.ObjectWriter._configAndWriteValue(ObjectWriter.java:1052) > at > com.fasterxml.jackson.databind.ObjectWriter.writeValue(ObjectWriter.java:905) > at > org.apache.logging.log4j.core.layout.AbstractJacksonLayout.toSerializable(AbstractJacksonLayout.java:83) > at > org.apache.logging.log4j.core.layout.JsonLayout.toSerializable(JsonLayout.java:937) > at > org.apache.logging.log4j.core.layout.AbstractJacksonLayout.toSerializable(AbstractJacksonLayout.java:63) > at > org.apache.logging.log4j.core.layout.JsonLayout.toSerializable(JsonLayout.java:801) > at > org.apache.logging.log4j.core.layout.AbstractJacksonLayout.toSerializable(AbstractJacksonLayout.java:33) > at > org.apache.logging.log4j.core.layout.AbstractStringLayout.toByteArray(AbstractStringLayout.java:253) > at > org.apache.logging.log4j.core.appender.mom.kafka.KafkaAppender.append(KafkaAppender.java:80) > at > org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:155) > at > org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:128) > at > org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:119) > at > org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84) > at > org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:390) > at > org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:375) > at > org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:359) > at > org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:79) > at > org.apache.logging.log4j.core.async.AsyncLogger.actualAsyncLog(AsyncLogger.java:309) > at > org.apache.logging.log4j.core.async.RingBufferLogEvent.execute(RingBufferLogEvent.java:149) > at > org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:45) > at > org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:29) > at > com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:128) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:745) > Caused by: java.lang.NullPointerException > at > org.apache.logging.log4j.core.async.RingBufferLogEvent.getFormattedMessage(RingBufferLogEvent.java:213) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > at > com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:536) > at > com.fasterxml.jackson.databind.ser.impl.SimpleBeanPropertyFilter.serializeAsField(SimpleBeanPropertyFilter.j > {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: log4j-dev-unsubscr...@logging.apache.org For additional commands, e-mail: log4j-dev-h...@logging.apache.org