[LOG4J2-3671] Support (and upgrade to) LMAX Disruptor 4.0.0

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 2.20.1
• Component/s: Core
• Assignee: Unassigned
• Reporter: Misagh Moayyed
• Created: 02/Oct/23 08:02
• Updated: 02/Oct/23 08:58
• Resolved: 02/Oct/23 08:58

Description

The latest version of the LMAX Disruptor, that is 4.0.0, is not compatible with Log4j v2. Certain classes such as SequenceReportingEventHandler, are removed from Disruptor v4:

Exception in thread "main" java.lang.NoClassDefFoundError: com/lmax/disruptor/SequenceReportingEventHandler
        at java.base/java.lang.ClassLoader.defineClass1(Native Method)
        at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1027)
        at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
        at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862)
        at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760)
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681)
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)
        at org.apache.logging.log4j.core.async.AsyncLoggerDisruptor.start(AsyncLoggerDisruptor.java:125)
        at org.apache.logging.log4j.core.async.AsyncLoggerContext.start(AsyncLoggerContext.java:75)
        at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:155)
        at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:47)
        at org.apache.logging.log4j.LogManager.getContext(LogManager.java:196)
        at org.apache.commons.logging.LogAdapter$Log4jLog.<clinit>(LogAdapter.java:146)
        at org.apache.commons.logging.LogAdapter$Log4jAdapter.createLog(LogAdapter.java:113)
        at org.apache.commons.logging.LogAdapter.createLog(LogAdapter.java:95)
        at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:67)
        at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:59)        
Caused by: java.lang.ClassNotFoundException: com.lmax.disruptor.SequenceReportingEventHandler
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)
        ... 24 more 

 

The following classes reference the now-removed class:

• AsyncLoggerConfigDisruptor
• RingBufferLogEventHandler

 

The current supported version of Disruptor seems to be 3.4.4. 

Issue Links

• duplicates: LOG4J2-3595 Supporting disruptor 4.x