[KAFKA-7099] KafkaLog4jAppender - not sending any message with level DEBUG

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 0.10.2.0
• Component/s: log
• Assignee: Unassigned
• Reporter: Vincent Lebreil
• Created: 26/Jun/18 13:03
• Updated: 28/Jun/18 10:29
• Resolved: 28/Jun/18 10:29

Description

KafkaLog4jAppender can be stuck if it is defined at root category with level DEBUG

log4j.rootLogger=DEBUG, kafka

log4j.appender.kafka=org.apache.kafka.log4jappender.KafkaLog4jAppender

DEBUG org.apache.kafka.clients.producer.KafkaProducer:131 - Exception occurred during message send:

org.apache.kafka.common.errors.TimeoutException: Failed to update metadata after 60000 ms.

KafkaLog4jAppender is using a KafkaProducer using itself Log4j with messages at levels TRACE and DEBUG. The appender used in this case is also the KafkaLog4jAppender.

Issue Links

• is duplicated by: KAFKA-6415 KafkaLog4jAppender deadlocks when logging from producer network thread