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https://issues.apache.org/jira/browse/LOG4J2-2669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16900745#comment-16900745
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Edith Chui commented on LOG4J2-2669:
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Same behaviours happened in 2.12.0 too.
Simply say the behaviour when using the problem version is that the log message
wrote on 1 Jan was not moved to file with file name 1 Jan, but moved to another
day, such as 31 Dec. As a result, log message wrote on 31 Dec is being erased.
I have already attached a simple program to simulate this behaviour. I was
using 2.11.1 before, and the rolling behaviour is normal as usual. Once
upgrade, the behaviour became incorrect. You can switch using different
versions of log4j2 in pom.xml to take observation.
Thanks.
> RollingFileAppender is not rolled by date correctly
> ---------------------------------------------------
>
> Key: LOG4J2-2669
> URL: https://issues.apache.org/jira/browse/LOG4J2-2669
> Project: Log4j 2
> Issue Type: Bug
> Components: Appenders, Core
> Affects Versions: 2.11.2, 2.12.0
> Reporter: Edith Chui
> Priority: Major
> Attachments: log4j2.issue.zip
>
>
> Since version 2.11.2, the log42 library is unable to roll the file by date.
> It will move the previous day's log to an existing log backup file with date
> different to the log date.
> e.g. Assume previous day is 1 Jan, and some logs with log date 1 Jan were
> written in test.log already. Running application on 2 Jan and continue do
> some logging, the previous day log will be moved to 31 Dec and the log on 31
> Dec was erased. After observed for few more days, the rolling is still
> incorrect.
> Using the same configuration, no such problem was occurred in 2.11.1.
> Sample :
> {code:java}
> <RollingFile name="fileAppender" fileName="C:/temp/test.log"
> filePattern="C:/temp/test_%d{yyyy-MM-dd}.bak">
> <PatternLayout pattern="%d{ISO8601} [%p] [%t] [%C] at [${hostName}] %m\r\n"
> />
> <Policies>
> <TimeBasedTriggeringPolicy interval="1" modulate="true" />
> </Policies>
> <DefaultRolloverStrategy>
> <Delete basePath="C:/temp/test.log" maxDepth="1">
> <IfLastModified age="10d" />
> </Delete>
> </DefaultRolloverStrategy>
> </RollingFile>{code}
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