[LOG4J2-1014] RollingFileAppender OnStartupTriggerPolicy fails when append="false"

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.2
• Component/s: Appenders

Environment

Windows

• Assignee: Ralph Goers
• Reporter: David Clutter
• Created: 14/May/15 21:31
• Updated: 03/Mar/21 00:01

Description

I want to Roll the File on startup and when the file is 1MB. The current file should be cleared when the roll happens so append="false". When append is false the startup trigger clears the main file without rolling it.

If i set append to "true". the startup trigger rolls the file properly but then it keeps appending so my first rolled log is 1MB, the second is 2MB, the third is 3MB. and so that the main file just keeps growing and the rolled files are each an increment bigger than the previous.

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN">
    <Properties>
        <Property name="patternLayout">%d{yyyy-MM-dd HH:mm:ss.SSS} [%10.10t] %X{client} %-5p %c{2} - %m%n</Property>
    </Properties>
    <Appenders>
        <RollingFile name="ProbeFile" fileName="probe.log" filePattern="probe-%i.log" append="false">
            <PatternLayout pattern="${patternLayout}"/>
            <Policies>
                <OnStartupTriggeringPolicy />
                <SizeBasedTriggeringPolicy size="1 MB"/>
            </Policies>
            <DefaultRolloverStrategy max="10"/>
        </RollingFile>
    </Appenders>

    <!-- Logger Levels: all, trace, debug, info, warn, error, fatal, off -->
    <Loggers>
        <Root level="info">
            <AppenderRef ref="ProbeFile"/>
        </Root>
    </Loggers>
</Configuration>