由于 kafka log4jappender 在启动纱线作业时出现异常

Question

When I run my yarn jobs with this log4j.properties as a configuration it fails with the below exception. If I remove KAFKA from rootLogger the jobs launch fine.

This is the same issue that has been reported here: https://github.com/wso2/product-ei/issues/2786

But I have not found a solution for this.

Environment: CDH 6.3.3

This is my log4j.properties file.

log4j.rootLogger=DEBUG,stdout,KAFKA
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Threshold=DEBUG
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%-5p %L %X{taskId} %X{stsId}     %d{yyyy-MM-dd HH:mm:ss}     %c     %t     %m%n  

log4j.appender.alog=org.apache.log4j.RollingFileAppender
log4j.appender.alog.maxFileSize=10MB
log4j.appender.alog.maxBackupIndex=5
log4j.appender.alog.file=../logs/serverx.log
log4j.appender.alog.append=false
log4j.appender.alog.layout=org.apache.log4j.PatternLayout
log4j.appender.alog.layout.conversionPattern=%-5p %X{taskId} 
%X{stsId}  %d{yyyy-MM-dd HH:mm:ss}     %c     %t     %m%n
log4j.appender.KAFKA=org.apache.kafka.log4jappender.KafkaLog4jAppender
log4j.appender.KAFKA.layout=org.apache.log4j.EnhancedPatternLayout
log4j.appender.KAFKA.layout.conversionPattern=%d%C{1}%t%5p %-4p%X{taskId} %X{stsId} %d{yyyy-MM-dd HH:mm:ss} %c %t %m%n%throwable

log4j.appender.KAFKA.topic=cdhuser_rocplus_roclog
log4j.appender.KAFKA.securityProtocol=PLAINTEXT
log4j.appender.KAFKA.ignoreExceptions=false

Exception:

Unexpected problem occured during version sanity check
Reported exception:
java.lang.NullPointerException
    at org.slf4j.LoggerFactory.versionSanityCheck(LoggerFactory.java:267)
    at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:126)
    at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:412)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383)
    at org.apache.kafka.clients.CommonClientConfigs.<clinit>(CommonClientConfigs.java:32)
    at org.apache.kafka.clients.producer.ProducerConfig.<clinit>(ProducerConfig.java:333)
    at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:327)
    at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:299)
    at org.apache.kafka.log4jappender.KafkaLog4jAppender.getKafkaProducer(KafkaLog4jAppender.java:279)
    at org.apache.kafka.log4jappender.KafkaLog4jAppender.activateOptions(KafkaLog4jAppender.java:273)
    at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:307)
    at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:172)
    at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:104)
    at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:842)
    at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:768)
    at org.apache.log4j.PropertyConfigurator.configureRootCategory(PropertyConfigurator.java:648)
    at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:514)
    at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:580)
    at org.apache.log4j.helpers.OptionConverter.selectAndConfigure(OptionConverter.java:526)
    at org.apache.log4j.LogManager.<clinit>(LogManager.java:127)
    at org.slf4j.impl.Log4jLoggerFactory.<init>(Log4jLoggerFactory.java:66)
    at org.slf4j.impl.StaticLoggerBinder.<init>(StaticLoggerBinder.java:72)
    at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:45)
    at org.apache.spark.internal.Logging$.org$apache$spark$internal$Logging$$isLog4j12(Logging.scala:217)
    at org.apache.spark.internal.Logging$class.initializeLogging(Logging.scala:122)
    at org.apache.spark.internal.Logging$class.initializeLogIfNecessary(Logging.scala:111)
    at org.apache.spark.deploy.yarn.ApplicationMaster$.initializeLogIfNecessary(ApplicationMaster.scala:771)
    at org.apache.spark.internal.Logging$class.initializeLogIfNecessary(Logging.scala:102)
    at org.apache.spark.deploy.yarn.ApplicationMaster$.initializeLogIfNecessary(ApplicationMaster.scala:771)
    at org.apache.spark.internal.Logging$class.log(Logging.scala:49)
    at org.apache.spark.deploy.yarn.ApplicationMaster$.log(ApplicationMaster.scala:771)
    at org.apache.spark.deploy.yarn.ApplicationMaster$.main(ApplicationMaster.scala:786)
    at org.apache.spark.deploy.yarn.ApplicationMaster.main(ApplicationMaster.scala)
Exception in thread "main" java.lang.ExceptionInInitializerError
    at org.apache.kafka.clients.producer.ProducerConfig.<clinit>(ProducerConfig.java:333)
    at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:327)
    at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:299)
    at org.apache.kafka.log4jappender.KafkaLog4jAppender.getKafkaProducer(KafkaLog4jAppender.java:279)
    at org.apache.kafka.log4jappender.KafkaLog4jAppender.activateOptions(KafkaLog4jAppender.java:273)
    at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:307)
    at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:172)
    at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:104)
    at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:842)
    at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:768)
    at org.apache.log4j.PropertyConfigurator.configureRootCategory(PropertyConfigurator.java:648)
    at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:514)
    at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:580)
    at org.apache.log4j.helpers.OptionConverter.selectAndConfigure(OptionConverter.java:526)
    at org.apache.log4j.LogManager.<clinit>(LogManager.java:127)
    at org.slf4j.impl.Log4jLoggerFactory.<init>(Log4jLoggerFactory.java:66)
    at org.slf4j.impl.StaticLoggerBinder.<init>(StaticLoggerBinder.java:72)
    at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:45)
    at org.apache.spark.internal.Logging$.org$apache$spark$internal$Logging$$isLog4j12(Logging.scala:217)
    at org.apache.spark.internal.Logging$class.initializeLogging(Logging.scala:122)
    at org.apache.spark.internal.Logging$class.initializeLogIfNecessary(Logging.scala:111)
    at org.apache.spark.deploy.yarn.ApplicationMaster$.initializeLogIfNecessary(ApplicationMaster.scala:771)
    at org.apache.spark.internal.Logging$class.initializeLogIfNecessary(Logging.scala:102)
    at org.apache.spark.deploy.yarn.ApplicationMaster$.initializeLogIfNecessary(ApplicationMaster.scala:771)
    at org.apache.spark.internal.Logging$class.log(Logging.scala:49)
    at org.apache.spark.deploy.yarn.ApplicationMaster$.log(ApplicationMaster.scala:771)
    at org.apache.spark.deploy.yarn.ApplicationMaster$.main(ApplicationMaster.scala:786)
    at org.apache.spark.deploy.yarn.ApplicationMaster.main(ApplicationMaster.scala)
Caused by: java.lang.NullPointerException
    at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:418)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383)
    at org.apache.kafka.clients.CommonClientConfigs.<clinit>(CommonClientConfigs.java:32)
    ... 28 more

Answer 1

We had the same problem with CDH 6.3.3

Looks like there are a problem with the libraries kafka-log4j-appender:2.2.1-cdh6.3.3 and slf4j-api:1.7.25.

The workarround that used was specify a different version of slf4j-api and slf4j-log4j12 libraries (Didn't work with 1.7 version and we had to use the 1.8 version).

The steps to solve this issue are:

• First you have to specify these libraries as dependency in the pom.xml file ...

  1.8.0-beta4

   <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${slf4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>${slf4j.version}</version> </dependency>

• Use a plugin to copy this dependencies to target directory ...

   <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> <version>3.1.1</version> <executions> <execution> <phase>package</phase> <goals> <goal>copy-dependencies</goal> </goals> </execution> </executions> <configuration> <includeScope>provided</includeScope> <outputDirectory>target</outputDirectory> <includeArtifactIds>slf4j-api,slf4j-log4j12</includeArtifactIds> <stripVersion>true</stripVersion> </configuration> </plugin>

• Include the following properties with spark:

spark.driver.extraClassPath=slf4j-api.jar:slf4j-log4j12.jar
spark.executor.extraClassPath=slf4j-api.jar:slf4j-log4j12.jar

• And finally use this parameter with spark-submit :

--jars slf4j-api.jar,slf4j-log4j12.jar