Github user liyinan926 commented on a diff in the pull request: https://github.com/apache/spark/pull/19717#discussion_r153366646 --- Diff: resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/submit/DriverConfigurationStepsOrchestrator.scala --- @@ -0,0 +1,84 @@ +/* + * 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.submit + +import org.apache.spark.SparkConf +import org.apache.spark.deploy.k8s.Config._ +import org.apache.spark.deploy.k8s.ConfigurationUtils +import org.apache.spark.deploy.k8s.Constants._ +import org.apache.spark.deploy.k8s.submit.steps.{BaseDriverConfigurationStep, DriverConfigurationStep, DriverKubernetesCredentialsStep, DriverServiceBootstrapStep} +import org.apache.spark.util.SystemClock + +/** + * Constructs the complete list of driver configuration steps to run to deploy the Spark driver. + */ +private[spark] class DriverConfigurationStepsOrchestrator( + namespace: String, + kubernetesAppId: String, + launchTime: Long, + mainAppResource: MainAppResource, + appName: String, + mainClass: String, + appArgs: Array[String], + submissionSparkConf: SparkConf) { + + // The resource name prefix is derived from the application name, making it easy to connect the + // names of the Kubernetes resources from e.g. kubectl or the Kubernetes dashboard to the + // application the user submitted. However, we can't use the application name in the label, as + // label values are considerably restrictive, e.g. must be no longer than 63 characters in + // length. So we generate a separate identifier for the app ID itself, and bookkeeping that + // requires finding "all pods for this application" should use the kubernetesAppId. + private val kubernetesResourceNamePrefix = + s"$appName-$launchTime".toLowerCase.replaceAll("\\.", "-") + private val dockerImagePullPolicy = submissionSparkConf.get(DOCKER_IMAGE_PULL_POLICY) + + def getAllConfigurationSteps(): Seq[DriverConfigurationStep] = { + val driverCustomLabels = ConfigurationUtils.parsePrefixedKeyValuePairs( + submissionSparkConf, + KUBERNETES_DRIVER_LABEL_PREFIX) + require(!driverCustomLabels.contains(SPARK_APP_ID_LABEL), "Label with key " + --- End diff -- Yes, done.
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