final long pid = ProcessHandle.current().pid();
            assertEquals("winhost:" + pid, systemHelper.getInstanceId());
        } finally {
            envMap.remove("COMPUTERNAME");
        }
    }

    @Test
    public void test_getInstanceId_uniquePerProcess() {
        // Verify that instanceId contains PID for process uniqueness

     * to ensure uniqueness across multiple JVMs on the same host.
     *
     * @return The instance ID.
     */
    public String getInstanceId() {
        final String targetName = ComponentUtil.getFessConfig().getSchedulerTargetName();
        final String hostname = getHostname();
        final long pid = ProcessHandle.current().pid();
        if (StringUtil.isNotBlank(targetName)) {