[LOG4J2-1232] Incorrect log rotation in last week of year

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.3, 2.5
• Fix Version/s: 2.6
• Assignee: Unassigned
• Reporter: Nikolai
• Created: 28/Dec/15 11:52
• Updated: 07/Feb/21 16:53
• Resolved: 07/Feb/21 16:53

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 lines and information is lost!

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