/**
* Finds the first free worker node key based on the number of tasks the worker has applied.
*
- * If a worker is found with `0` running tasks, it is detected as free and its worker node key is returned.
+ * If a worker is found with `0` executing tasks, it is detected as free and its worker node key is returned.
*
* If no free worker is found, `-1` is returned.
*
/**
* Finds the last free worker node key based on the number of tasks the worker has applied.
*
- * If a worker is found with `0` running tasks, it is detected as free and its worker node key is returned.
+ * If a worker is found with `0` executing tasks, it is detected as free and its worker node key is returned.
*
* If no free worker is found, `-1` is returned.
*