feat: give an option to set the priority class for spark-operator pod

Signed-off-by: Praveen Gajulapalli <[email protected]>

charts/spark-operator-chart/README.md

@@ -110,6 +110,7 @@ See [helm uninstall](https://helm.sh/docs/helm/helm_uninstall) for command docum
 | podMonitor.labels | object | `{}` | Pod monitor labels |
 | podMonitor.podMetricsEndpoint | object | `{"interval":"5s","scheme":"http"}` | Prometheus metrics endpoint properties. `metrics.portName` will be used as a port |
 | podSecurityContext | object | `{}` | Pod security context |
+| priorityClassName | string | `""` | Priority class to be used for running spark-operator pod. This helps in managing the pods during preemption. |
 | rbac.annotations | object | `{}` | Optional annotations for rbac |
 | rbac.create | bool | `false` | **DEPRECATED** use `createRole` and `createClusterRole` |
 | rbac.createClusterRole | bool | `true` | Create and use RBAC `ClusterRole` resources |

charts/spark-operator-chart/templates/deployment.yaml

@@ -134,6 +134,9 @@ spec:
         {{- toYaml . | nindent 8 }}
         {{- end }}
       {{- with .Values.nodeSelector }}
+      {{- if .Values.priorityClassName }}
+      priorityClassName: {{ .Values.priorityClassName }}
+      {{- end }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}
       {{- end }}

charts/spark-operator-chart/values.yaml

@@ -210,3 +210,6 @@ istio:
 
 # labelSelectorFilter -- A comma-separated list of key=value, or key labels to filter resources during watch and list based on the specified labels.
 labelSelectorFilter: ""
+
+# priorityClassName -- A priority class to be used for running spark-operator pod.
+priorityClassName: ""