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https://issues.apache.org/jira/browse/LOG4J2-1232?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Nikolai updated LOG4J2-1232:
----------------------------
    Description: 
I have log4j2.xml configuration with several log-files definitions like:
{code:xml}
<RollingRandomAccessFile name="FIX_MESSAGES_FILE_MARKET_DATA" 
fileName="logs/market_data_msg.log"
                         
filePattern="logs/market_data_msg.log-%d{yyyy-MM-'W'W}" immediateFlush="false">
  <PatternLayout pattern="%m%n"/>
  <Policies>
    <TimeBasedTriggeringPolicy/>
  </Policies>
</RollingRandomAccessFile>
{code}
Today (2015-12-28) all log files suddenly become almost empty. Reason in 
permanent rotation current log file in file "market_data_msg.log-2014-12-W5" 
(wrong year). As result of permanent rotation both files contains only 0 or 1 
lines and information is lost!

Obviously, the problem related with the fact that today started last week of 
the year.

  was:
I have log4j2.xml configuration with several log-files definitions like:
{code:xml}
<RollingRandomAccessFile name="FIX_MESSAGES_FILE_MARKET_DATA" 
fileName="logs/market_data_msg.log"
                         
filePattern="logs/market_data_msg.log-%d{yyyy-MM-'W'W}" immediateFlush="false">
  <PatternLayout pattern="%m%n"/>
  <Policies>
    <TimeBasedTriggeringPolicy/>
  </Policies>
</RollingRandomAccessFile>
{code}
Today (2015-12-28) all log files suddenly become almost empty. Reason in 
permanent rotation current log file in file "market_data_msg.log-2014-12-W5" 
(wrong year). As result of permanent rotation both files contains only 0 or 1 
line and information is lost!

Obviously, the problem related with the fact that today started last week of 
the year.


> Incorrect log rotation in last week of year
> -------------------------------------------
>
>                 Key: LOG4J2-1232
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-1232
>             Project: Log4j 2
>          Issue Type: Bug
>    Affects Versions: 2.3, 2.5
>            Reporter: Nikolai
>            Priority: Critical
>
> I have log4j2.xml configuration with several log-files definitions like:
> {code:xml}
> <RollingRandomAccessFile name="FIX_MESSAGES_FILE_MARKET_DATA" 
> fileName="logs/market_data_msg.log"
>                          
> filePattern="logs/market_data_msg.log-%d{yyyy-MM-'W'W}" 
> immediateFlush="false">
>   <PatternLayout pattern="%m%n"/>
>   <Policies>
>     <TimeBasedTriggeringPolicy/>
>   </Policies>
> </RollingRandomAccessFile>
> {code}
> Today (2015-12-28) all log files suddenly become almost empty. Reason in 
> permanent rotation current log file in file "market_data_msg.log-2014-12-W5" 
> (wrong year). As result of permanent rotation both files contains only 0 or 1 
> lines and information is lost!
> Obviously, the problem related with the fact that today started last week of 
> the year.



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