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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:

    <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>

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.

  was:
I have log4j2.xml configuration with several log-files definitions like:

    <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>

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 month.


> 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:
>     <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>
> 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.



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