About the [cluster Event:'message'](https://github.com/nodejs/node/blob/master/doc/api/cluster.md#event-message), is this example wrong ? When I run the code in my machine, It shows `numReqs` didn't increase as below:  <!-- Thank you for reporting a possible bug in Node.js. Please fill in as much of the template below as you can. Version: output of `node -v` Platform: output of `uname -a` (UNIX), or version and 32 or 64-bit (Windows) Subsystem: if known, please specify the affected core module name If possible, please provide code that demonstrates the problem, keeping it as simple and free of external dependencies as you can. --> * **Version**: v10.12.0 * **Platform**: macOS High Sierra 10.13.3 * **Subsystem**: <!-- Please provide more details below this comment. -->
About the cluster Event:'message',
is this example wrong ?
When I run the code in my machine, It shows
numReqsdidn't increase as below: