pod didn't trigger scale-up (it wouldn't fit if a new node is added)

Autoscaling worked fine (kubernetes added new 1cpu/2gbRAM droplet/node to cluster automatically) when i started a kubernetes Job with requested memory: "800Mi", parallelism: 2 but when i tried to start a job with requested memmory: "2000Mi, parallelism: 2 it showing error in job’s event logs

pod didn't trigger scale-up (it wouldn't fit if a new node is added): 1 Insufficient memory

kubectl apply -f job.yaml

apiVersion: batch/v1
kind: Job
metadata:
  name: scaling-test
spec:
  parallelism: 2
  template:
    metadata:
      name: scaling-test
    spec:
      containers:
        - name: debian
          image: debian
          command: ["/bin/sh","-c"]
          args: ["sleep 300"]
          resources:
            requests:
              cpu: "100m"
              memory: "1900Mi"
      restartPolicy: Never

My assumption was, kubernetes while autoscaling will add new node with respect to job’s requested resource requirements.(add 1cpu/3gbRAM node) any idea how to make kubernetes autoscale and provision a node based on job’s requested resources?