[LOG4J2-520] RollingRandomAccessFile with Async Appender skip logs

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0-beta9, 2.0-rc1
• Fix Version/s: 2.0-rc2
• Component/s: Appenders

Environment

JDK 1.6, Eclipse

• Assignee: Remko Popma
• Reporter: JavaTech
• Created: 28/Jan/14 14:14
• Updated: 06/May/14 09:43
• Resolved: 05/May/14 13:20

Description

I have written a sample code which will write DEBUG, INFO , WARN logs in a single flile, I have written a logs in FOR loop printing numbers from 1 to 99.
sometime it print numbers incomplete sequence, like 1 to 67, 1 to 89 etc.

log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
  <Appenders>
    <RollingRandomAccessFile name="RollingRandomAccessFile"
      fileName="logs/app.log" filePattern="logs/$${date:yyyy-MM}/app-%d{MM-dd-yyyy}-%i.log"
      immediateFlush="false" append="true" ignoreExceptions="false">
      <PatternLayout>
        <Pattern>%d %-5p [%t] (%F:%L) - %m%n</Pattern>
      </PatternLayout>
      <Policies>
        <TimeBasedTriggeringPolicy />
        <SizeBasedTriggeringPolicy size="100KB"/>
      </Policies>
    </RollingRandomAccessFile>
    <Async name="ASYNC" includeLocation="true">
      <AppenderRef ref="RollingRandomAccessFile" />
    </Async>
  </Appenders>
  <Loggers>
    <Root level="debug" includeLocation="true">
      <AppenderRef ref="ASYNC" />
    </Root>
  </Loggers>
</Configuration>

Sample Java Code

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class LoggerUtil {
	public static Logger logger = LoggerFactory.getLogger(LoggerUtil.class);
	public static void main(String[] args) {
		System.out.println("start");
		logger.debug("debug log");
		logger.info("info log");
		logger.error("error log");
		for(int i = 0; i < 99; i++) {
			logger.warn("{}",i);
			System.out.println("I : - " + i);
		}
		logger.error("finish printing logs");
		System.out.println("end");		
	}
}

Issue Links

• is duplicated by: LOG4J2-521 RollingRandomAccessFile + Async Appender skip logs sometimes (while logging into same file and while switching to another log file)
• relates to: LOG4J2-521 RollingRandomAccessFile + Async Appender skip logs sometimes (while logging into same file and while switching to another log file)