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https://issues.apache.org/jira/browse/LOGCXX-464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15226241#comment-15226241
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Martijn Buijs commented on LOGCXX-464:
--------------------------------------
Just for completeness, an extract from my xml config:
{code:xml}
<appender name="rollingfile"
class="org.apache.log4j.rolling.RollingFileAppender">
<param name="append" value="true" />
<param name="bufferedio" value="true" />
<rollingPolicy class="org.apache.log4j.rolling.TimeBasedRollingPolicy">
<param name="FileNamePattern" value="%d{yyyyMMdd.HH}.log"/>
</rollingPolicy>
<layout class="org.apache.log4j.PatternLayout">
<param name="conversionpattern" value="%d{ISO8601} %-5p [%-30.30c:%5L]
%m%n"/>
</layout>
</appender>
{code}
> TimeBasedRollingPolicy should append as configured on rollover
> --------------------------------------------------------------
>
> Key: LOGCXX-464
> URL: https://issues.apache.org/jira/browse/LOGCXX-464
> Project: Log4cxx
> Issue Type: Bug
> Components: Appender
> Affects Versions: 0.10.0
> Environment: Win32, Linux
> Reporter: Martijn Buijs
>
> I'm using log4cxx 0.10.0 configured through xml to use a RollingFileAppender
> that rolls/triggers using a TimeBasedRollingPolicy.
> * The append property on the RollingFileAppender is true.
> * The FileNamePattern of the TimeBasedRollingPolicy is set to use the
> following pattern: {code}%d{yyyyMMdd.HH}.log{code}
> This setup I use in an embedded system that is not directly connected to the
> internet and has no battery powered rtc. This means that the system time is
> always 1970-01-01 01:00:00 at boot, normally time is synchronized by the user
> after boot.
> In this case the following situation can occur:
> # Current time is 2016-04-05 15:20:00, my application is logging to
> {code}20160405.15.log{code}
> # User restarts the system, time is now 1970-01-01 01:00, my application
> starts at boot and starts logging to {code}19700101.01.log{code}
> # User synchronizes time to 2016-04-05 15:25:00. Now the application
> truncates {code}20160405.15.log{code} and start writing logs to it.
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