[LOG4J2-1964] Dynamic reconfiguration does not work for filePattern of RollingFile

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.8.2
• Fix Version/s: 2.9.0
• Component/s: Core

Environment

JDK 1.7.80

• Assignee: Unassigned
• Reporter: Xiaoshuang LU
• Created: 03/Jul/17 02:26
• Updated: 18/Apr/20 05:02
• Resolved: 06/Jul/17 02:47

Description

The initial log4j2.xml file was

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="INFO" monitorInterval="60">
    <Properties>
        <Property name="LOG_HOME">./logs</Property>
    </Properties>

    <Appenders>
        <RollingFile
            name="RollingFileAppender"
            fileName="${LOG_HOME}/log.log"
            filePattern="${LOG_HOME}/log.log.%d{yyyy-MM-dd}.%i">
            <ThresholdFilter level="INFO" onMatch="ACCEPT" onMismatch="DENY"/>
            <PatternLayout pattern="%d{DEFAULT} %p %t %c %L: %m%n"/>
            <Policies>
                <OnStartupTriggeringPolicy/>
                <!--<TimeBasedTriggeringPolicy/>-->
                <SizeBasedTriggeringPolicy size="256MB"/>
            </Policies>
            <DefaultRolloverStrategy max="8"/>
        </RollingFile>
    </Appenders>

    <Loggers>
        <Root level="INFO">
            <AppenderRef ref="RollingFileAppender"/>
        </Root>
    </Loggers>
</Configuration>

And then I changed filePattern to

filePattern="${LOG_HOME}/log.log.%i"

Log file names still contain date.

Issue Links

• duplicates: LOG4J2-1725 RollingFileAppender's filePattern not reloaded when using monitorInterval
• is related to: LOG4J2-2766 TimeBasedTriggeringPolicy of RollingRandomAccessFile is not updated instantly
• relates to: LOG4J2-2009 Rolling appender managers broken on pattern/policy reconfiguration