[LOG4J2-3392] AppenderLoggingException logging any exception to a MongoDB Appender

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.16.0
• Fix Version/s: 2.17.2
• Assignee: Gary D. Gregory
• Reporter: Omer U
• Created: 04/Feb/22 15:29
• Updated: 07/Feb/22 12:51
• Resolved: 05/Feb/22 19:32

Description

Logging an exception with

LOG.warn("test log", new RuntimeException("test ex"));

 

does not work and throws the following exception:

org.apache.logging.log4j.core.appender.AppenderLoggingException: Unable to write to database in appender: Can't find a codec for class org.apache.logging.log4j.mongodb4.MongoDb4DocumentObject.

 

There's a blog post [1] providing a workaround which is rewrite of MongoDb4Provider which causes classpath issues.
 

 

[1]https://blog.termian.dev/posts/log4j2-mongodb-appender/