Github user kimoonkim commented on a diff in the pull request:
https://github.com/apache/spark/pull/20910#discussion_r179266562
--- Diff:
resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/features/BasicDriverFeatureStep.scala
---
@@ -0,0 +1,135 @@
+/*
+ * 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 scala.collection.JavaConverters._
+import scala.collection.mutable
+
+import io.fabric8.kubernetes.api.model.{ContainerBuilder, EnvVarBuilder,
EnvVarSourceBuilder, HasMetadata, PodBuilder, QuantityBuilder}
+
+import org.apache.spark.SparkException
+import org.apache.spark.deploy.k8s.{KubernetesConf,
KubernetesDriverSpecificConf, KubernetesUtils, SparkPod}
+import org.apache.spark.deploy.k8s.Config._
+import org.apache.spark.deploy.k8s.Constants._
+import org.apache.spark.internal.config._
+import org.apache.spark.launcher.SparkLauncher
+
+private[spark] class BasicDriverFeatureStep(
+ conf: KubernetesConf[KubernetesDriverSpecificConf])
+ extends KubernetesFeatureConfigStep {
+
+ private val driverPodName = conf
+ .get(KUBERNETES_DRIVER_POD_NAME)
+ .getOrElse(s"${conf.appResourceNamePrefix}-driver")
+
+ private val driverContainerImage = conf
+ .get(DRIVER_CONTAINER_IMAGE)
+ .getOrElse(throw new SparkException("Must specify the driver container
image"))
+
+ // CPU settings
+ private val driverCpuCores =
conf.getOption("spark.driver.cores").getOrElse("1")
--- End diff --
Maybe use a Scala constant for `spark.driver.cores` if it makes sense? I
see other code lines use constants.
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