Right now I have a cronjob that downloads data and I want to share it to another container that does the processing for the data as new ones are uploaded. I wanted to know if there was a way without any external services to share this data between the cronjob pod and my main pod?

I've tried creating a persistent volume and persistent volume claim to share the data but when the cronjob downloads the data it doesn't appear in the other pod even though the volume is mounted.

apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: download
spec:

  concurrencyPolicy: Forbid
  suspend: false 

  schedule: "* * * * *"
  jobTemplate:
    spec:

      template:
        spec:
          volumes:
            - name: downloaded-data-claim
              persistentVolumeClaim:
                claimName: downloaded-data-claim

#container and image is here where it downloads

kind: PersistentVolume
metadata:
  name: downloaded-data
spec:
  capacity:
    storage: 1Gi
  accessModes:
    - ReadWriteMany
  persistentVolumeReclaimPolicy: Retain
  claimRef:
    name: downloaded-data-claim
    namespace: default
  hostPath:
    path: "/tmp/"

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: downloaded-data-claim
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 1Gi
  volumeName: downloaded-data

and then the pod mounts the volume

      volumes:
        - name: downloaded-data-claim 
          presistentVolumeClaim: 
            claimName: downloaded-data-claim
        - name: output
          emptyDir: {}

      containers:

        - name: "rand"
          image: <filler>
          imagePullPolicy: <filler>
          volumeMounts:
            - name: downloaded-data-claim 
              mountPath: /input
            - name: output  
              mountPath: /output  
          resources: