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https://issues.apache.org/jira/browse/LOG4J2-392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13832454#comment-13832454
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Andre Bogus commented on LOG4J2-392:
------------------------------------
Hi again. I now think the problem is that the classes in question log *a lot* -
so much that they overwhelm the appender, creating a huge backlog, which the
AsyncLoggerThread is trying to finish. The shutdown hook apparently closes all
files, which is the right thing to do - but it would be even better to join the
appender thread before doing that.
I'm attaching a very small intuitive program that exhibits the problematic
behavior, just by logging a lot.
Regards,
Andre
> Intermittent errors with appenders
> ----------------------------------
>
> Key: LOG4J2-392
> URL: https://issues.apache.org/jira/browse/LOG4J2-392
> Project: Log4j 2
> Issue Type: Bug
> Components: Appenders
> Affects Versions: 2.0-beta8, 2.0-beta9
> Environment: Windows 7 SP1 64bit
> Reporter: ilynaf
> Attachments: AppenderOverwhelmer.java, Log4J2.zip, log4j2.xml
>
>
> I intermittently receive following errors after upgrading to beta 8.
> EVERYTHING was working well with beta 6:
> * 1st error (happens most frequently)
> 2013-09-05 10:48:37,722 ERROR Attempted to append to non-started appender
> LogFile
> * 2nd error:
> 2013-09-05 10:49:38,268 ERROR Attempted to append to non-started appender
> LogFile
> 2013-09-05 10:49:38,268 ERROR Unable to write to stream
> log/ui-selenium-tests.log for appender LogFile
> 2013-09-05 10:49:38,269 ERROR An exception occurred processing Appender
> LogFile org.apache.logging.log4j.core.appender.AppenderRuntimeException:
> Error writing to RandomAccessFile log/ui-selenium-tests.log
> at
> org.apache.logging.log4j.core.appender.rolling.FastRollingFileManager.flush(FastRollingFileManager.java:108)
> at
> org.apache.logging.log4j.core.appender.rolling.FastRollingFileManager.write(FastRollingFileManager.java:89)
> at
> org.apache.logging.log4j.core.appender.OutputStreamManager.write(OutputStreamManager.java:129)
> at
> org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:115)
> at
> org.apache.logging.log4j.core.appender.FastRollingFileAppender.append(FastRollingFileAppender.java:97)
> at
> org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:102)
> at
> org.apache.logging.log4j.core.appender.AsyncAppender$AsyncThread.run(AsyncAppender.java:228)
> Caused by: java.io.IOException: Write error
> at java.io.RandomAccessFile.writeBytes(Native Method)
> at java.io.RandomAccessFile.write(Unknown Source)
> at
> org.apache.logging.log4j.core.appender.rolling.FastRollingFileManager.flush(FastRollingFileManager.java:105)
> ... 6 more
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