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Posted to notifications@logging.apache.org by "Jacob Shields (Jira)" <ji...@apache.org> on 2021/01/26 23:59:00 UTC
[jira] [Comment Edited] (LOG4J2-2816) NullPointerException from
AsyncLogger
[ https://issues.apache.org/jira/browse/LOG4J2-2816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17272498#comment-17272498 ]
Jacob Shields edited comment on LOG4J2-2816 at 1/26/21, 11:58 PM:
------------------------------------------------------------------
On Log4j 2.12.1, LMAX Disruptor 3.4.2, we experience the same issue:
{code:java}
AsyncLogger error handling event seq=44735, value='org.apache.logging.log4j.core.async.RingBufferLogEvent@54ddc702': 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:45)
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.base/java.lang.Thread.run(Thread.java:834)
{code}
Line 161 in {{RingBufferLogEvent.java}} points to {{asyncLogger}} being {{null}}, as previously hypothesized.
was (Author: jshields-squarespace):
On Log4j 2.12.1, LMAX Disruptor 3.4.2, we experience the same issue:
{code:java}
AsyncLogger error handling event seq=44735, value='org.apache.logging.log4j.core.async.RingBufferLogEvent@54ddc702': 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:45)
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.base/java.lang.Thread.run(Thread.java:834)
{code}
> NullPointerException from AsyncLogger
> -------------------------------------
>
> Key: LOG4J2-2816
> URL: https://issues.apache.org/jira/browse/LOG4J2-2816
> Project: Log4j 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.13.0
> Reporter: Denis
> Priority: Minor
>
> We've got several times following NullPointerException (example from our stdout.log):
>
> {code:java}
> 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]
> {code}
>
> What is interesting this NPEs always preceeded by
> {code}
> 84449.232: [purging class loader data graph, 0.0000003 secs] vm message
> {code}
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