api-docs.md

Packages:

• sparkoperator.k8s.io/v1beta2

sparkoperator.k8s.io/v1beta2

Package v1beta2 is the v1beta2 version of the API.

Resource Types:

• ScheduledSparkApplication
• SparkApplication

ScheduledSparkApplication

Field	Description
apiVersion string	sparkoperator.k8s.io/v1beta2
kind string	ScheduledSparkApplication
metadata Kubernetes meta/v1.ObjectMeta	Refer to the Kubernetes API documentation for the fields of the metadata field.
spec ScheduledSparkApplicationSpec	schedule string Schedule is a cron schedule on which the application should run. template SparkApplicationSpec Template is a template from which SparkApplication instances can be created. suspend bool (Optional) Suspend is a flag telling the controller to suspend subsequent runs of the application if set to true. Defaults to false. concurrencyPolicy ConcurrencyPolicy ConcurrencyPolicy is the policy governing concurrent SparkApplication runs. successfulRunHistoryLimit int32 (Optional) SuccessfulRunHistoryLimit is the number of past successful runs of the application to keep. Defaults to 1. failedRunHistoryLimit int32 (Optional) FailedRunHistoryLimit is the number of past failed runs of the application to keep. Defaults to 1.
status ScheduledSparkApplicationStatus

SparkApplication

SparkApplication represents a Spark application running on and using Kubernetes as a cluster manager.

Field	Description
apiVersion string	sparkoperator.k8s.io/v1beta2
kind string	SparkApplication
metadata Kubernetes meta/v1.ObjectMeta	Refer to the Kubernetes API documentation for the fields of the metadata field.
spec SparkApplicationSpec	type SparkApplicationType Type tells the type of the Spark application. sparkVersion string SparkVersion is the version of Spark the application uses. mode DeployMode Mode is the deployment mode of the Spark application. proxyUser string (Optional) ProxyUser specifies the user to impersonate when submitting the application. It maps to the command-line flag “–proxy-user” in spark-submit. image string (Optional) Image is the container image for the driver, executor, and init-container. Any custom container images for the driver, executor, or init-container takes precedence over this. imagePullPolicy string (Optional) ImagePullPolicy is the image pull policy for the driver, executor, and init-container. imagePullSecrets []string (Optional) ImagePullSecrets is the list of image-pull secrets. mainClass string (Optional) MainClass is the fully-qualified main class of the Spark application. This only applies to Java/Scala Spark applications. mainApplicationFile string (Optional) MainFile is the path to a bundled JAR, Python, or R file of the application. arguments []string (Optional) Arguments is a list of arguments to be passed to the application. sparkConf map[string]string (Optional) SparkConf carries user-specified Spark configuration properties as they would use the “–conf” option in spark-submit. hadoopConf map[string]string (Optional) HadoopConf carries user-specified Hadoop configuration properties as they would use the the “–conf” option in spark-submit. The SparkApplication controller automatically adds prefix “spark.hadoop.” to Hadoop configuration properties. sparkConfigMap string (Optional) SparkConfigMap carries the name of the ConfigMap containing Spark configuration files such as log4j.properties. The controller will add environment variable SPARK_CONF_DIR to the path where the ConfigMap is mounted to. hadoopConfigMap string (Optional) HadoopConfigMap carries the name of the ConfigMap containing Hadoop configuration files such as core-site.xml. The controller will add environment variable HADOOP_CONF_DIR to the path where the ConfigMap is mounted to. volumes []Kubernetes core/v1.Volume (Optional) Volumes is the list of Kubernetes volumes that can be mounted by the driver and/or executors. driver DriverSpec Driver is the driver specification. executor ExecutorSpec Executor is the executor specification. deps Dependencies (Optional) Deps captures all possible types of dependencies of a Spark application. restartPolicy RestartPolicy RestartPolicy defines the policy on if and in which conditions the controller should restart an application. nodeSelector map[string]string (Optional) NodeSelector is the Kubernetes node selector to be added to the driver and executor pods. This field is mutually exclusive with nodeSelector at podSpec level (driver or executor). This field will be deprecated in future versions (at SparkApplicationSpec level). failureRetries int32 (Optional) FailureRetries is the number of times to retry a failed application before giving up. This is best effort and actual retry attempts can be >= the value specified. retryInterval int64 (Optional) RetryInterval is the unit of intervals in seconds between submission retries. pythonVersion string (Optional) This sets the major Python version of the docker image used to run the driver and executor containers. Can either be 2 or 3, default 2. memoryOverheadFactor string (Optional) This sets the Memory Overhead Factor that will allocate memory to non-JVM memory. For JVM-based jobs this value will default to 0.10, for non-JVM jobs 0.40. Value of this field will be overridden by Spec.Driver.MemoryOverhead and Spec.Executor.MemoryOverhead if they are set. monitoring MonitoringSpec (Optional) Monitoring configures how monitoring is handled. batchScheduler string (Optional) BatchScheduler configures which batch scheduler will be used for scheduling timeToLiveSeconds int64 (Optional) TimeToLiveSeconds defines the Time-To-Live (TTL) duration in seconds for this SparkApplication after its termination. The SparkApplication object will be garbage collected if the current time is more than the TimeToLiveSeconds since its termination. batchSchedulerOptions BatchSchedulerConfiguration (Optional) BatchSchedulerOptions provides fine-grained control on how to batch scheduling. sparkUIOptions SparkUIConfiguration (Optional) SparkUIOptions allows configuring the Service and the Ingress to expose the sparkUI dynamicAllocation DynamicAllocation (Optional) DynamicAllocation configures dynamic allocation that becomes available for the Kubernetes scheduler backend since Spark 3.0.
status SparkApplicationStatus

ApplicationState

(Appears on: SparkApplicationStatus)

ApplicationState tells the current state of the application and an error message in case of failures.

Field	Description
state ApplicationStateType
errorMessage string

ApplicationStateType (string alias)

(Appears on: ApplicationState)

ApplicationStateType represents the type of the current state of an application.

BatchSchedulerConfiguration

(Appears on: SparkApplicationSpec)

BatchSchedulerConfiguration used to configure how to batch scheduling Spark Application

Field	Description
queue string	(Optional) Queue stands for the resource queue which the application belongs to, it’s being used in Volcano batch scheduler.
priorityClassName string	(Optional) PriorityClassName stands for the name of k8s PriorityClass resource, it’s being used in Volcano batch scheduler.
resources Kubernetes core/v1.ResourceList	(Optional) Resources stands for the resource list custom request for. Usually it is used to define the lower-bound limit. If specified, volcano scheduler will consider it as the resources requested.

ConcurrencyPolicy (string alias)

(Appears on: ScheduledSparkApplicationSpec)

Dependencies

(Appears on: SparkApplicationSpec)

Dependencies specifies all possible types of dependencies of a Spark application.

Field	Description
jars []string	(Optional) Jars is a list of JAR files the Spark application depends on.
files []string	(Optional) Files is a list of files the Spark application depends on.
pyFiles []string	(Optional) PyFiles is a list of Python files the Spark application depends on.
packages []string	(Optional) Packages is a list of maven coordinates of jars to include on the driver and executor classpaths. This will search the local maven repo, then maven central and any additional remote repositories given by the “repositories” option. Each package should be of the form “groupId:artifactId:version”.
excludePackages []string	(Optional) ExcludePackages is a list of “groupId:artifactId”, to exclude while resolving the dependencies provided in Packages to avoid dependency conflicts.
repositories []string	(Optional) Repositories is a list of additional remote repositories to search for the maven coordinate given with the “packages” option.

DeployMode (string alias)

(Appears on: SparkApplicationSpec)

DeployMode describes the type of deployment of a Spark application.

DriverInfo

(Appears on: SparkApplicationStatus)

DriverInfo captures information about the driver.

Field	Description
webUIServiceName string
webUIPort int32	UI Details for the UI created via ClusterIP service accessible from within the cluster.
webUIAddress string
webUIIngressName string	Ingress Details if an ingress for the UI was created.
webUIIngressAddress string
podName string

DriverSpec

(Appears on: SparkApplicationSpec)

DriverSpec is specification of the driver.

Field	Description
SparkPodSpec SparkPodSpec	(Members of SparkPodSpec are embedded into this type.)
podName string	(Optional) PodName is the name of the driver pod that the user creates. This is used for the in-cluster client mode in which the user creates a client pod where the driver of the user application runs. It’s an error to set this field if Mode is not in-cluster-client.
coreRequest string	(Optional) CoreRequest is the physical CPU core request for the driver. Maps to spark.kubernetes.driver.request.cores that is available since Spark 3.0.
javaOptions string	(Optional) JavaOptions is a string of extra JVM options to pass to the driver. For instance, GC settings or other logging.
lifecycle Kubernetes core/v1.Lifecycle	(Optional) Lifecycle for running preStop or postStart commands
kubernetesMaster string	(Optional) KubernetesMaster is the URL of the Kubernetes master used by the driver to manage executor pods and other Kubernetes resources. Default to https://kubernetes.default.svc.
serviceAnnotations map[string]string	(Optional) ServiceAnnotations defines the annotations to be added to the Kubernetes headless service used by executors to connect to the driver.
ports []Port	(Optional) Ports settings for the pods, following the Kubernetes specifications.

DriverState (string alias)

DriverState tells the current state of a spark driver.

DynamicAllocation

(Appears on: SparkApplicationSpec)

DynamicAllocation contains configuration options for dynamic allocation.

Field	Description
enabled bool	Enabled controls whether dynamic allocation is enabled or not.
initialExecutors int32	(Optional) InitialExecutors is the initial number of executors to request. If .spec.executor.instances is also set, the initial number of executors is set to the bigger of that and this option.
minExecutors int32	(Optional) MinExecutors is the lower bound for the number of executors if dynamic allocation is enabled.
maxExecutors int32	(Optional) MaxExecutors is the upper bound for the number of executors if dynamic allocation is enabled.
shuffleTrackingTimeout int64	(Optional) ShuffleTrackingTimeout controls the timeout in milliseconds for executors that are holding shuffle data if shuffle tracking is enabled (true by default if dynamic allocation is enabled).

ExecutorSpec

(Appears on: SparkApplicationSpec)

ExecutorSpec is specification of the executor.

Field	Description
SparkPodSpec SparkPodSpec	(Members of SparkPodSpec are embedded into this type.)
instances int32	(Optional) Instances is the number of executor instances.
coreRequest string	(Optional) CoreRequest is the physical CPU core request for the executors. Maps to spark.kubernetes.executor.request.cores that is available since Spark 2.4.
javaOptions string	(Optional) JavaOptions is a string of extra JVM options to pass to the executors. For instance, GC settings or other logging.
deleteOnTermination bool	(Optional) DeleteOnTermination specify whether executor pods should be deleted in case of failure or normal termination. Maps to spark.kubernetes.executor.deleteOnTermination that is available since Spark 3.0.
ports []Port	(Optional) Ports settings for the pods, following the Kubernetes specifications.

ExecutorState (string alias)

(Appears on: SparkApplicationStatus)

ExecutorState tells the current state of an executor.

GPUSpec

(Appears on: SparkPodSpec)

Field	Description
name string	Name is GPU resource name, such as: nvidia.com/gpu or amd.com/gpu
quantity int64	Quantity is the number of GPUs to request for driver or executor.

MonitoringSpec

(Appears on: SparkApplicationSpec)

MonitoringSpec defines the monitoring specification.

Field	Description
exposeDriverMetrics bool	ExposeDriverMetrics specifies whether to expose metrics on the driver.
exposeExecutorMetrics bool	ExposeExecutorMetrics specifies whether to expose metrics on the executors.
metricsProperties string	(Optional) MetricsProperties is the content of a custom metrics.properties for configuring the Spark metric system. If not specified, the content in spark-docker/conf/metrics.properties will be used.
metricsPropertiesFile string	(Optional) MetricsPropertiesFile is the container local path of file metrics.properties for configuring the Spark metric system. If not specified, value /etc/metrics/conf/metrics.properties will be used.
prometheus PrometheusSpec	(Optional) Prometheus is for configuring the Prometheus JMX exporter.

NameKey

(Appears on: SparkPodSpec)

NameKey represents the name and key of a SecretKeyRef.

Field	Description
name string
key string

NamePath

(Appears on: SparkPodSpec)

NamePath is a pair of a name and a path to which the named objects should be mounted to.

Field	Description
name string
path string

Port

(Appears on: DriverSpec, ExecutorSpec)

Port represents the port definition in the pods objects.

Field	Description
name string
protocol string
containerPort int32

PrometheusSpec

(Appears on: MonitoringSpec)

PrometheusSpec defines the Prometheus specification when Prometheus is to be used for collecting and exposing metrics.

Field	Description
jmxExporterJar string	JmxExporterJar is the path to the Prometheus JMX exporter jar in the container.
port int32	(Optional) Port is the port of the HTTP server run by the Prometheus JMX exporter. If not specified, 8090 will be used as the default.
portName string	(Optional) PortName is the port name of prometheus JMX exporter port. If not specified, jmx-exporter will be used as the default.
configFile string	(Optional) ConfigFile is the path to the custom Prometheus configuration file provided in the Spark image. ConfigFile takes precedence over Configuration, which is shown below.
configuration string	(Optional) Configuration is the content of the Prometheus configuration needed by the Prometheus JMX exporter. If not specified, the content in spark-docker/conf/prometheus.yaml will be used. Configuration has no effect if ConfigFile is set.

RestartPolicy

(Appears on: SparkApplicationSpec)

RestartPolicy is the policy of if and in which conditions the controller should restart a terminated application. This completely defines actions to be taken on any kind of Failures during an application run.

Field	Description
type RestartPolicyType	Type specifies the RestartPolicyType.
onSubmissionFailureRetries int32	(Optional) OnSubmissionFailureRetries is the number of times to retry submitting an application before giving up. This is best effort and actual retry attempts can be >= the value specified due to caching. These are required if RestartPolicy is OnFailure.
onFailureRetries int32	(Optional) OnFailureRetries the number of times to retry running an application before giving up.
onSubmissionFailureRetryInterval int64	(Optional) OnSubmissionFailureRetryInterval is the interval in seconds between retries on failed submissions.
onFailureRetryInterval int64	(Optional) OnFailureRetryInterval is the interval in seconds between retries on failed runs.

RestartPolicyType (string alias)

(Appears on: RestartPolicy)

ScheduleState (string alias)

(Appears on: ScheduledSparkApplicationStatus)

ScheduledSparkApplicationSpec

(Appears on: ScheduledSparkApplication)

Field	Description
schedule string	Schedule is a cron schedule on which the application should run.
template SparkApplicationSpec	Template is a template from which SparkApplication instances can be created.
suspend bool	(Optional) Suspend is a flag telling the controller to suspend subsequent runs of the application if set to true. Defaults to false.
concurrencyPolicy ConcurrencyPolicy	ConcurrencyPolicy is the policy governing concurrent SparkApplication runs.
successfulRunHistoryLimit int32	(Optional) SuccessfulRunHistoryLimit is the number of past successful runs of the application to keep. Defaults to 1.
failedRunHistoryLimit int32	(Optional) FailedRunHistoryLimit is the number of past failed runs of the application to keep. Defaults to 1.

ScheduledSparkApplicationStatus

(Appears on: ScheduledSparkApplication)

Field	Description
lastRun Kubernetes meta/v1.Time	LastRun is the time when the last run of the application started.
nextRun Kubernetes meta/v1.Time	NextRun is the time when the next run of the application will start.
lastRunName string	LastRunName is the name of the SparkApplication for the most recent run of the application.
pastSuccessfulRunNames []string	PastSuccessfulRunNames keeps the names of SparkApplications for past successful runs.
pastFailedRunNames []string	PastFailedRunNames keeps the names of SparkApplications for past failed runs.
scheduleState ScheduleState	ScheduleState is the current scheduling state of the application.
reason string	Reason tells why the ScheduledSparkApplication is in the particular ScheduleState.

SecretInfo

(Appears on: SparkPodSpec)

SecretInfo captures information of a secret.

Field	Description
name string
path string
secretType SecretType

SecretType (string alias)

(Appears on: SecretInfo)

SecretType tells the type of a secret.

SparkApplicationSpec

(Appears on: SparkApplication, ScheduledSparkApplicationSpec)

SparkApplicationSpec describes the specification of a Spark application using Kubernetes as a cluster manager. It carries every pieces of information a spark-submit command takes and recognizes.

Field	Description
type SparkApplicationType	Type tells the type of the Spark application.
sparkVersion string	SparkVersion is the version of Spark the application uses.
mode DeployMode	Mode is the deployment mode of the Spark application.
proxyUser string	(Optional) ProxyUser specifies the user to impersonate when submitting the application. It maps to the command-line flag “–proxy-user” in spark-submit.
image string	(Optional) Image is the container image for the driver, executor, and init-container. Any custom container images for the driver, executor, or init-container takes precedence over this.
imagePullPolicy string	(Optional) ImagePullPolicy is the image pull policy for the driver, executor, and init-container.
imagePullSecrets []string	(Optional) ImagePullSecrets is the list of image-pull secrets.
mainClass string	(Optional) MainClass is the fully-qualified main class of the Spark application. This only applies to Java/Scala Spark applications.
mainApplicationFile string	(Optional) MainFile is the path to a bundled JAR, Python, or R file of the application.
arguments []string	(Optional) Arguments is a list of arguments to be passed to the application.
sparkConf map[string]string	(Optional) SparkConf carries user-specified Spark configuration properties as they would use the “–conf” option in spark-submit.
hadoopConf map[string]string	(Optional) HadoopConf carries user-specified Hadoop configuration properties as they would use the the “–conf” option in spark-submit. The SparkApplication controller automatically adds prefix “spark.hadoop.” to Hadoop configuration properties.
sparkConfigMap string	(Optional) SparkConfigMap carries the name of the ConfigMap containing Spark configuration files such as log4j.properties. The controller will add environment variable SPARK_CONF_DIR to the path where the ConfigMap is mounted to.
hadoopConfigMap string	(Optional) HadoopConfigMap carries the name of the ConfigMap containing Hadoop configuration files such as core-site.xml. The controller will add environment variable HADOOP_CONF_DIR to the path where the ConfigMap is mounted to.
volumes []Kubernetes core/v1.Volume	(Optional) Volumes is the list of Kubernetes volumes that can be mounted by the driver and/or executors.
driver DriverSpec	Driver is the driver specification.
executor ExecutorSpec	Executor is the executor specification.
deps Dependencies	(Optional) Deps captures all possible types of dependencies of a Spark application.
restartPolicy RestartPolicy	RestartPolicy defines the policy on if and in which conditions the controller should restart an application.
nodeSelector map[string]string	(Optional) NodeSelector is the Kubernetes node selector to be added to the driver and executor pods. This field is mutually exclusive with nodeSelector at podSpec level (driver or executor). This field will be deprecated in future versions (at SparkApplicationSpec level).
failureRetries int32	(Optional) FailureRetries is the number of times to retry a failed application before giving up. This is best effort and actual retry attempts can be >= the value specified.
retryInterval int64	(Optional) RetryInterval is the unit of intervals in seconds between submission retries.
pythonVersion string	(Optional) This sets the major Python version of the docker image used to run the driver and executor containers. Can either be 2 or 3, default 2.
memoryOverheadFactor string	(Optional) This sets the Memory Overhead Factor that will allocate memory to non-JVM memory. For JVM-based jobs this value will default to 0.10, for non-JVM jobs 0.40. Value of this field will be overridden by Spec.Driver.MemoryOverhead and Spec.Executor.MemoryOverhead if they are set.
monitoring MonitoringSpec	(Optional) Monitoring configures how monitoring is handled.
batchScheduler string	(Optional) BatchScheduler configures which batch scheduler will be used for scheduling
timeToLiveSeconds int64	(Optional) TimeToLiveSeconds defines the Time-To-Live (TTL) duration in seconds for this SparkApplication after its termination. The SparkApplication object will be garbage collected if the current time is more than the TimeToLiveSeconds since its termination.
batchSchedulerOptions BatchSchedulerConfiguration	(Optional) BatchSchedulerOptions provides fine-grained control on how to batch scheduling.
sparkUIOptions SparkUIConfiguration	(Optional) SparkUIOptions allows configuring the Service and the Ingress to expose the sparkUI
dynamicAllocation DynamicAllocation	(Optional) DynamicAllocation configures dynamic allocation that becomes available for the Kubernetes scheduler backend since Spark 3.0.

SparkApplicationStatus

(Appears on: SparkApplication)

SparkApplicationStatus describes the current status of a Spark application.

Field	Description
sparkApplicationId string	SparkApplicationID is set by the spark-distribution(via spark.app.id config) on the driver and executor pods
submissionID string	SubmissionID is a unique ID of the current submission of the application.
lastSubmissionAttemptTime Kubernetes meta/v1.Time	LastSubmissionAttemptTime is the time for the last application submission attempt.
terminationTime Kubernetes meta/v1.Time	CompletionTime is the time when the application runs to completion if it does.
driverInfo DriverInfo	DriverInfo has information about the driver.
applicationState ApplicationState	AppState tells the overall application state.
executorState map[string]github.com/GoogleCloudPlatform/spark-on-k8s-operator/pkg/apis/sparkoperator.k8s.io/v1beta2.ExecutorState	ExecutorState records the state of executors by executor Pod names.
executionAttempts int32	ExecutionAttempts is the total number of attempts to run a submitted application to completion. Incremented upon each attempted run of the application and reset upon invalidation.
submissionAttempts int32	SubmissionAttempts is the total number of attempts to submit an application to run. Incremented upon each attempted submission of the application and reset upon invalidation and rerun.

SparkApplicationType (string alias)

(Appears on: SparkApplicationSpec)

SparkApplicationType describes the type of a Spark application.

SparkPodSpec

(Appears on: DriverSpec, ExecutorSpec)

SparkPodSpec defines common things that can be customized for a Spark driver or executor pod. TODO: investigate if we should use v1.PodSpec and limit what can be set instead.

Field	Description
cores int32	(Optional) Cores maps to spark.driver.cores or spark.executor.cores for the driver and executors, respectively.
coreLimit string	CoreLimit specifies a hard limit on CPU cores for the pod. Optional
memory string	(Optional) Memory is the amount of memory to request for the pod.
memoryOverhead string	(Optional) MemoryOverhead is the amount of off-heap memory to allocate in cluster mode, in MiB unless otherwise specified.
gpu GPUSpec	(Optional) GPU specifies GPU requirement for the pod.
image string	(Optional) Image is the container image to use. Overrides Spec.Image if set.
configMaps []NamePath	(Optional) ConfigMaps carries information of other ConfigMaps to add to the pod.
secrets []SecretInfo	(Optional) Secrets carries information of secrets to add to the pod.
env []Kubernetes core/v1.EnvVar	(Optional) Env carries the environment variables to add to the pod.
envVars map[string]string	(Optional) EnvVars carries the environment variables to add to the pod. Deprecated. Consider using env instead.
envFrom []Kubernetes core/v1.EnvFromSource	(Optional) EnvFrom is a list of sources to populate environment variables in the container.
envSecretKeyRefs map[string]github.com/GoogleCloudPlatform/spark-on-k8s-operator/pkg/apis/sparkoperator.k8s.io/v1beta2.NameKey	(Optional) EnvSecretKeyRefs holds a mapping from environment variable names to SecretKeyRefs. Deprecated. Consider using env instead.
labels map[string]string	(Optional) Labels are the Kubernetes labels to be added to the pod.
annotations map[string]string	(Optional) Annotations are the Kubernetes annotations to be added to the pod.
volumeMounts []Kubernetes core/v1.VolumeMount	(Optional) VolumeMounts specifies the volumes listed in “.spec.volumes” to mount into the main container’s filesystem.
affinity Kubernetes core/v1.Affinity	(Optional) Affinity specifies the affinity/anti-affinity settings for the pod.
tolerations []Kubernetes core/v1.Toleration	(Optional) Tolerations specifies the tolerations listed in “.spec.tolerations” to be applied to the pod.
podSecurityContext Kubernetes core/v1.PodSecurityContext	(Optional) PodSecurityContext specifies the PodSecurityContext to apply.
securityContext Kubernetes core/v1.SecurityContext	(Optional) SecurityContext specifies the container’s SecurityContext to apply.
schedulerName string	(Optional) SchedulerName specifies the scheduler that will be used for scheduling
sidecars []Kubernetes core/v1.Container	(Optional) Sidecars is a list of sidecar containers that run along side the main Spark container.
initContainers []Kubernetes core/v1.Container	(Optional) InitContainers is a list of init-containers that run to completion before the main Spark container.
hostNetwork bool	(Optional) HostNetwork indicates whether to request host networking for the pod or not.
nodeSelector map[string]string	(Optional) NodeSelector is the Kubernetes node selector to be added to the driver and executor pods. This field is mutually exclusive with nodeSelector at SparkApplication level (which will be deprecated).
dnsConfig Kubernetes core/v1.PodDNSConfig	(Optional) DnsConfig dns settings for the pod, following the Kubernetes specifications.
terminationGracePeriodSeconds int64	(Optional) Termination grace period seconds for the pod
serviceAccount string	(Optional) ServiceAccount is the name of the custom Kubernetes service account used by the pod.
hostAliases []Kubernetes core/v1.HostAlias	(Optional) HostAliases settings for the pod, following the Kubernetes specifications.

SparkUIConfiguration

(Appears on: SparkApplicationSpec)

SparkUIConfiguration is for driver UI specific configuration parameters.

Field	Description
servicePort int32	(Optional) ServicePort allows configuring the port at service level that might be different from the targetPort. TargetPort should be the same as the one defined in spark.ui.port
serviceType Kubernetes core/v1.ServiceType	(Optional) ServiceType allows configuring the type of the service. Defaults to ClusterIP.
ingressAnnotations map[string]string	(Optional) IngressAnnotations is a map of key,value pairs of annotations that might be added to the ingress object. i.e. specify nginx as ingress.class
ingressTLS []Kubernetes extensions/v1beta1.IngressTLS	(Optional) TlsHosts is useful If we need to declare SSL certificates to the ingress object

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