[LOG4J2-2816] NullPointerException from AsyncLogger

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.13.0
• Fix Version/s: 3.0.0, 2.15.0
• Component/s: Core
• Assignee: Volkan Yazici
• Reporter: Denis
• Created: 10/Apr/20 16:22
• Updated: 25/Jul/21 20:05
• Resolved: 23/Jul/21 12:10

Description

We've got several times following NullPointerException (example from our stdout.log):
 

84449.232: [purging class loader data graph, 0.0000003 secs]
AsyncLogger error handling event seq=1037012, value='org.apache.logging.log4j.core.async.RingBufferLogEvent@2a7b2d78': java.lang.NullPointerException: null
java.lang.NullPointerException
 at org.apache.logging.log4j.core.async.RingBufferLogEvent.execute(RingBufferLogEvent.java:161)
 at org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:46)
 at org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:29)
 at com.lmax.disruptor.BatchEventProcessor.processEvents(BatchEventProcessor.java:168)
 at com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:125)
 at java.lang.Thread.run(Thread.java:748)
AsyncLogger error handling event seq=1037022, value='org.apache.logging.log4j.core.async.RingBufferLogEvent@d5d330f': java.lang.NullPointerException: null
java.lang.NullPointerException
 at org.apache.logging.log4j.core.async.RingBufferLogEvent.execute(RingBufferLogEvent.java:161)
 at org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:46)
 at org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:29)
 at com.lmax.disruptor.BatchEventProcessor.processEvents(BatchEventProcessor.java:168)
 at com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:125)
 at java.lang.Thread.run(Thread.java:748)
84450.232: [deflating idle monitors, 0.0000624 secs]

 

What is interesting this NPEs always preceeded by

84449.232: [purging class loader data graph, 0.0000003 secs] vm message

Issue Links

• links to: GitHub Pull Request #487
• links to: GitHub Pull Request #488