public class Test extends Thread {

    private String name;

    private Logger LOGGER;

    public Test(String name) {
        this.name=name;
    }

    @Override
    public void run() {

        System.setProperty("taskLogFolder", Global.getInstance().getLogRoot().toString());
        System.setProperty("taskLogName", name);

        LoggerContext loggerContext = Configurator.initialize(name, new File(Global.getInstance().getAppRoot()+WEB_INF_DIR+"taskLog4j2.xml").toString());

        LOGGER = loggerContext.getLogger(name);

        for(int i=0;i<100;i++) {
            LOGGER.info(LOGGER.getName()+" "+i);
        }

        //LOGGER.info(LOGGER.getName());

    }

}

new Test("task-8").start();
new Test("task-2").start();
new Test("task-3").start();
new Test("task-4").start();
new Test("task-5").start();
new Test("task-6").start();
new Test("task-7").start();

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="info" monitorInterval = "30">

    <Properties>
        <Property name="pattern">%d{yyyy-MM-dd HH:mm:ss.SSS} [%level] [thread-id %T] %l - %msg%n</Property>
    </Properties>

    <Appenders>
        <RollingFile name="fileLogger" fileName="${sys:taskLogFolder}/${sys:taskLogName}.log" filePattern="${sys:taskLogFolder}/${sys:taskLogName}-%d{yyyy-MM-dd}.log">
            <PatternLayout>
                <pattern>${pattern}</pattern>
            </PatternLayout>
            <Policies>
                <TimeBasedTriggeringPolicy interval="1" modulate="true" />
            </Policies>
        </RollingFile>

        <Console name="console" target="SYSTEM_OUT">
            <PatternLayout pattern="${pattern}" />
        </Console>
    </Appenders>

    <Loggers>
        <Root level="info" additivity="false">
            <appender-ref ref="console" />
            <appender-ref ref="fileLogger" />
        </Root>
        <Logger name="com.test.*" level="info">
            <appender-ref ref="fileLogger" level="info" />
        </Logger>
    </Loggers>

</Configuration>