dongjoon-hyun opened a new pull request, #520:
URL: https://github.com/apache/spark-kubernetes-operator/pull/520
### What changes were proposed in this pull request?
This PR aims to add `On-Demand PVC` example.
### Why are the changes needed?
To illustrate how Apache Spark uses the PVC in the on-demand manner.
```
$ kubectl apply -f examples/pi-with-on-demand-pvc.yaml
sparkapplication.spark.apache.org/pi-with-on-demand-pvc created
$ kubectl get sparkapp
NAME CURRENT STATE AGE
pi-with-on-demand-pvc RunningHealthy 6s
$ kubectl get pod -l spark-role
NAME READY STATUS
RESTARTS AGE
pi-with-on-demand-pvc-0-driver 1/1 Running 0
11s
spark-kubernetes-operator-67964b9b47-vql44 1/1 Running 0
6m17s
spark-pi-5d91cc9c90d4b8cf-exec-1 1/1 Running 0
7s
spark-pi-5d91cc9c90d4b8cf-exec-2 0/1 ContainerCreating 0
6s
spark-pi-5d91cc9c90d4b8cf-exec-3 1/1 Running 0
6s
$ kubectl get pvc
NAME STATUS VOLUME
CAPACITY ACCESS MODES STORAGECLASS VOLUMEATTRIBUTESCLASS
AGE
spark-pi-5d91cc9c90d4b8cf-exec-1-pvc-0 Bound
pvc-a848829b-4b7e-4e55-a9b5-1d9230e67fc1 1Gi RWOP local-path
<unset> 12s
spark-pi-5d91cc9c90d4b8cf-exec-2-pvc-0 Bound
pvc-e5ef5a62-9238-4a67-84ce-d7f2ba4069aa 1Gi RWOP local-path
<unset> 11s
spark-pi-5d91cc9c90d4b8cf-exec-3-pvc-0 Bound
pvc-94db625d-5b16-4b4f-81c5-92fbad150d7e 1Gi RWOP local-path
<unset> 11s
$ kubectl get pv
NAME CAPACITY ACCESS MODES RECLAIM
POLICY STATUS CLAIM STORAGECLASS
VOLUMEATTRIBUTESCLASS REASON AGE
pvc-94db625d-5b16-4b4f-81c5-92fbad150d7e 1Gi RWOP Delete
Bound default/spark-pi-5d91cc9c90d4b8cf-exec-3-pvc-0 local-path
<unset> 11s
pvc-a848829b-4b7e-4e55-a9b5-1d9230e67fc1 1Gi RWOP Delete
Bound default/spark-pi-5d91cc9c90d4b8cf-exec-1-pvc-0 local-path
<unset> 12s
pvc-e5ef5a62-9238-4a67-84ce-d7f2ba4069aa 1Gi RWOP Delete
Bound default/spark-pi-5d91cc9c90d4b8cf-exec-2-pvc-0 local-path
<unset> 11s
```
### Does this PR introduce _any_ user-facing change?
No behavior change.
### How was this patch tested?
Manually tested with `Rancher Desktop`.
### Was this patch authored or co-authored using generative AI tooling?
Generated-by: `Gemini 3.1 Pro (High)` on `Antigravity`
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