henrydlwang created LOG4J2-2166:
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Summary: while shutdown IBM liberty with dubbo and log4j2(Async);
log4j2 cannot stop
Key: LOG4J2-2166
URL: https://issues.apache.org/jira/browse/LOG4J2-2166
Project: Log4j 2
Issue Type: Bug
Components: Appenders, Configurators
Affects Versions: 2.9.1
Environment: SUSE Linux Enterprise Server 11 PS4;
CPU 4core 64-bit;
IBM liberty-16.0.0.3
IBM J9VM JRE 1.8.0
Reporter: henrydlwang
Attachments: IMG_0288.HEIC, IMG_0290.HEIC, IMG_0291.HEIC
I set properties
Log4jContextSelector=org.apache.logging.log4j.core.async.AsyncLoggerContextSelector
to make all logging async; it works quite well while my app is up which is
running on liberty.
when I try to shut it down with liberty's stop command. Log4j cannot stop
normally, it looks like that its AsyncLoggerDisruptor.stop(at line 152) method
want to load class DiscardingAsyncQueueFullPolicy， but the ClassLoader cannot
be found, so system begin to throws NPE; at the same time log4j cannot write
any more message, as it cannot get logger any more as system is shutting down.
so log4j began to thow exception eventually it cause OOME.
I guess it's async logger issue. so I remove the Log4jContextSelector
properties and try. it works. I will try sync logger and async appender later.
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