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https://issues.apache.org/jira/browse/LOG4J2-1946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16054336#comment-16054336
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Lucio Farinosi edited comment on LOG4J2-1946 at 6/19/17 5:03 PM:
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Please find in the attached log4j_trace.log the required trace. The breaking
point is @ 2017-06-19 17:59:09,814
was (Author: lucio.farinosi):
breaking point @ 2017-06-19 17:59:09,814
> DefaultRolloverStrategy is failing if some log file is deleted from the
> current sequence
> ----------------------------------------------------------------------------------------
>
> Key: LOG4J2-1946
> URL: https://issues.apache.org/jira/browse/LOG4J2-1946
> Project: Log4j 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.8.2
> Reporter: Lucio Farinosi
> Attachments: log4j_issue.zip, log4j_trace.log, screenshot-1.png
>
>
> A wrong behaviour in rollover strategy has been reported to me today which is
> related to a problem on the DefaultRolloverStrategy.
> The case specific settings are:
> - RollingRandomAccessFile appender
> - SizeBasedTriggeringPolicy set to 1MB
> - DefaultRolloverStrategy with max set to 20
> - filePattern without date (i.e. C:/log/test.log.%i)
> When the rollover action begins (the moment the 20th file is completed) if
> someone deletes one of more files from the current sequence (for example
> test.log.8 and/or test.log.9 or whatever) the purgeAscending method is
> failing in engaging the rollover actions in the correct way and this results
> in a rollover effect limited only to 2 files (the other files are not updated
> anymore - in a similar way already observed and fixed in
> https://issues.apache.org/jira/browse/LOG4J2-1821).
> I managed to reproduce the problem in the attached simple project, even in
> single threaded execution.
> Note that I managed to workaround the problem adding a fake fileIndex to the
> appender appender.R.strategy.fileIndex=xxxx which results in engaging the
> purgeDescending method of the same class which is working fine.
> The completed log4j2.properties file is listed below.
> status=INFO
> monitorInterval=5
> appender.R.type=RollingRandomAccessFile
> appender.R.name=R
> appender.R.fileName=C:/log/test.log
> appender.R.layout.type=PatternLayout
> appender.R.layout.pattern=%d{dd-MM-yyyy HH:mm:ss,SSS} [%mdc] %p %c{1.} [%t]
> %m %ex%n
> appender.R.filePattern=C:/log/test.log.%i
> appender.R.policies.type=Policies
> appender.R.policies.size.type=SizeBasedTriggeringPolicy
> appender.R.policies.size.size=1MB
> appender.R.strategy.type=DefaultRolloverStrategy
> appender.R.strategy.max=20
> rootLogger.level=INFO
> rootLogger.appenderRef.R.ref=R
> #added to workaround the issue
> #appender.R.strategy.fileIndex=xxxx
> Could you please check it out and/or advise accordingly?
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