Leon Finker created LOG4J2-1914:
-----------------------------------
Summary: AsyncLogger and message formatting
(ConcurrentModificationException)
Key: LOG4J2-1914
URL: https://issues.apache.org/jira/browse/LOG4J2-1914
Project: Log4j 2
Issue Type: Bug
Affects Versions: 2.7
Reporter: Leon Finker
Hi,
The docs specify that the default for log4j.format.msg.async is false. But we
still got the following log4j2 AsyncLogger processing exception. Does it mean
that message formatting is async or maybe async up to 2.7 only? Or is this
something else? Thank you
2017-05-18 08:02:44,570 Log4j2-TF-3-AsyncLoggerConfig-2 ERROR An exception
occurred processing Appender AppLogFile
java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextNode(Unknown Source)
at java.util.HashMap$EntryIterator.next(Unknown Source)
at java.util.HashMap$EntryIterator.next(Unknown Source)
at
org.apache.logging.log4j.message.ParameterFormatter.appendMap(ParameterFormatter.java:569)
at
org.apache.logging.log4j.message.ParameterFormatter.appendPotentiallyRecursiveValue(ParameterFormatter.java:505)
at
org.apache.logging.log4j.message.ParameterFormatter.recursiveDeepToString(ParameterFormatter.java:432)
at
org.apache.logging.log4j.message.ParameterFormatter.formatMessage2(ParameterFormatter.java:189)
at
org.apache.logging.log4j.message.ParameterizedMessage.formatTo(ParameterizedMessage.java:225)
at
org.apache.logging.log4j.core.pattern.MessagePatternConverter.format(MessagePatternConverter.java:117)
at
org.apache.logging.log4j.core.pattern.PatternFormatter.format(PatternFormatter.java:38)
at
org.apache.logging.log4j.core.layout.PatternLayout$PatternSerializer.toSerializable(PatternLayout.java:294)
at
org.apache.logging.log4j.core.layout.PatternLayout.toText(PatternLayout.java:195)
at
org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:180)
at
org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:57)
at
org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.directEncodeEvent(AbstractOutputStreamAppender.java:176)
at
org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.tryAppend(AbstractOutputStreamAppender.java:169)
at
org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:160)
at
org.apache.logging.log4j.core.appender.RollingRandomAccessFileAppender.append(RollingRandomAccessFileAppender.java:104)
at
org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:156)
at
org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:129)
at
org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:120)
at
org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84)
at
org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:447)
at
org.apache.logging.log4j.core.async.AsyncLoggerConfig.asyncCallAppenders(AsyncLoggerConfig.java:114)
at
org.apache.logging.log4j.core.async.AsyncLoggerConfigDisruptor$Log4jEventWrapperHandler.onEvent(AsyncLoggerConfigDisruptor.java:112)
at
org.apache.logging.log4j.core.async.AsyncLoggerConfigDisruptor$Log4jEventWrapperHandler.onEvent(AsyncLoggerConfigDisruptor.java:98)
at
com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:129)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown
Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
Source)
at java.lang.Thread.run(Unknown Source)
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