log4j-core/src/test/resources/rolling-file-appender-reconfigure.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="debug" monitorInterval="10">
  <Properties>
    <Property name="logFilePath">target/log4j-1967</Property>
  </Properties>
  <Appenders>
    <Console name="CONSOLE" target="SYSTEM_OUT">
      <PatternLayout pattern="[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n" />
    </Console>
    <RollingFile name="LOG_FILE" fileName="${logFilePath}.log" filePattern="${logFilePath}.%i.log"
      immediateFlush="true">
      <PatternLayout pattern="[%d{yyyyMMdd.HH:mm:ss.SSS}:%-5level][%-17t][%-30c][%m]%n" />
      <Policies>
        <SizeBasedTriggeringPolicy size="100MB" />
      </Policies>
      <DefaultRolloverStrategy max="1000" />
    </RollingFile>
    <RollingFile name="ERROR_FILE" fileName="${logFilePath}.error.log" filePattern="${logFilePath}.error.%i.log"
      immediateFlush="true">
      <PatternLayout pattern="[%d{yyyyMMdd.HH:mm:ss.SSS}:%-5level][%-17t][%-30c{2}][%m]%n" />
      <Policies>
        <SizeBasedTriggeringPolicy size="100MB" />
      </Policies>
      <DefaultRolloverStrategy max="1000" />
    </RollingFile>
  </Appenders>
  <Loggers>
    <Logger name="a" level="warn" additivity="false" />
    <Logger name="b" level="warn" additivity="false" />
    <Logger name="c" level="warn" additivity="false" />
    <Logger name="d" level="warn" additivity="false" />
    <Logger name="e" level="warn" additivity="false" />

    <Root level="debug" additivity="false">
      <AppenderRef ref="LOG_FILE" level="debug" />
      <AppenderRef ref="ERROR_FILE" level="error" />
    </Root>
  </Loggers>
</Configuration>