spark KubernetesDriverCustomFeatureConfigStep 源码
spark KubernetesDriverCustomFeatureConfigStep 代码
文件路径：/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/features/KubernetesDriverCustomFeatureConfigStep.scala
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.spark.deploy.k8s.features
import org.apache.spark.annotation.{DeveloperApi, Unstable}
import org.apache.spark.deploy.k8s.KubernetesDriverConf
/**
* :: DeveloperApi ::
*
* A base interface to help user extend custom feature step in driver side.
* Note: If your custom feature step would be used only in driver or both in driver and executor,
* please use this.
*
* Example of driver feature step:
*
* {{{
* class DriverExampleFeatureStep extends KubernetesDriverCustomFeatureConfigStep {
* private var driverConf: KubernetesDriverConf = _
*
* override def init(conf: KubernetesDriverConf): Unit = {
* driverConf = conf
* }
*
* // Implements methods of `KubernetesFeatureConfigStep`, such as `configurePod`
* override def configurePod(pod: SparkPod): SparkPod = {
* // Apply modifications on the given pod in accordance to this feature.
* }
* }
* }}}
*
* Example of feature step for both driver and executor:
*
* {{{
* class DriverAndExecutorExampleFeatureStep extends KubernetesDriverCustomFeatureConfigStep
* with KubernetesExecutorCustomFeatureConfigStep {
* private var kubernetesConf: KubernetesConf = _
*
* override def init(conf: KubernetesDriverConf): Unit = {
* kubernetesConf = conf
* }
*
* override def init(conf: KubernetesExecutorConf): Unit = {
* kubernetesConf = conf
* }
*
* // Implements methods of `KubernetesFeatureConfigStep`, such as `configurePod`
* override def configurePod(pod: SparkPod): SparkPod = {
* // Apply modifications on the given pod in accordance to this feature.
* }
* }
* }}}
*/
@Unstable
@DeveloperApi
trait KubernetesDriverCustomFeatureConfigStep extends KubernetesFeatureConfigStep {
/**
* Initialize the configuration for driver user feature step, this only applicable when user
* specified `spark.kubernetes.driver.pod.featureSteps`, the init will be called after feature
* step loading.
*/
def init(config: KubernetesDriverConf): Unit
}
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