[ 
https://issues.apache.org/jira/browse/SPARK-25877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16716025#comment-16716025
 ] 

ASF GitHub Bot commented on SPARK-25877:
----------------------------------------

mccheah commented on a change in pull request #23220: [SPARK-25877][k8s] Move 
all feature logic to feature classes.
URL: https://github.com/apache/spark/pull/23220#discussion_r240454265
 
 

 ##########
 File path: 
resource-managers/kubernetes/core/src/test/scala/org/apache/spark/deploy/k8s/PodBuilderSuite.scala
 ##########
 @@ -0,0 +1,177 @@
+/*
+ * 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
+
+import java.io.File
+
+import io.fabric8.kubernetes.api.model.{Config => _, _}
+import io.fabric8.kubernetes.client.KubernetesClient
+import io.fabric8.kubernetes.client.dsl.{MixedOperation, PodResource}
+import org.mockito.Matchers.any
+import org.mockito.Mockito.{mock, never, verify, when}
+import scala.collection.JavaConverters._
+
+import org.apache.spark.{SparkConf, SparkException, SparkFunSuite}
+import org.apache.spark.deploy.k8s._
+import org.apache.spark.internal.config.ConfigEntry
+
+abstract class PodBuilderSuite extends SparkFunSuite {
+
+  protected def templateFileConf: ConfigEntry[_]
+
+  protected def buildPod(sparkConf: SparkConf, client: KubernetesClient): 
SparkPod
+
+  private val baseConf = new SparkConf(false)
+    .set(Config.CONTAINER_IMAGE, "spark-executor:latest")
+
+  test("use empty initial pod if template is not specified") {
+    val client = mock(classOf[KubernetesClient])
+    buildPod(baseConf.clone(), client)
+    verify(client, never()).pods()
+  }
+
+  test("load pod template if specified") {
+    val client = mockKubernetesClient()
+    val sparkConf = baseConf.clone().set(templateFileConf.key, 
"template-file.yaml")
+    val pod = buildPod(sparkConf, client)
+    verifyPod(pod)
+  }
+
+  test("complain about misconfigured pod template") {
+    val client = mockKubernetesClient(
+      new PodBuilder()
+        .withNewMetadata()
+        .addToLabels("test-label-key", "test-label-value")
+        .endMetadata()
+        .build())
+    val sparkConf = baseConf.clone().set(templateFileConf.key, 
"template-file.yaml")
+    val exception = intercept[SparkException] {
+      buildPod(sparkConf, client)
+    }
+    assert(exception.getMessage.contains("Could not load pod from template 
file."))
+  }
+
+  private def mockKubernetesClient(pod: Pod = podWithSupportedFeatures()): 
KubernetesClient = {
+    val kubernetesClient = mock(classOf[KubernetesClient])
+    val pods =
+      mock(classOf[MixedOperation[Pod, PodList, DoneablePod, PodResource[Pod, 
DoneablePod]]])
+    val podResource = mock(classOf[PodResource[Pod, DoneablePod]])
+    when(kubernetesClient.pods()).thenReturn(pods)
+    when(pods.load(any(classOf[File]))).thenReturn(podResource)
+    when(podResource.get()).thenReturn(pod)
+    kubernetesClient
+  }
+
+  private def verifyPod(pod: SparkPod): Unit = {
+    val metadata = pod.pod.getMetadata
+    assert(metadata.getLabels.containsKey("test-label-key"))
+    assert(metadata.getAnnotations.containsKey("test-annotation-key"))
+    assert(metadata.getNamespace === "namespace")
+    assert(metadata.getOwnerReferences.asScala.exists(_.getName == 
"owner-reference"))
+    val spec = pod.pod.getSpec
+    assert(!spec.getContainers.asScala.exists(_.getName == 
"executor-container"))
+    assert(spec.getDnsPolicy === "dns-policy")
+    assert(spec.getHostAliases.asScala.exists(_.getHostnames.asScala.exists(_ 
== "hostname")))
 
 Review comment:
   Nit: The second call to `exists` can be `contains` instead, so that we don't 
pass a function object that ignores the argument. Alternatively, both `exists` 
calls can be removed:
   
   ```
   spec.getHostAliases.asScala.flatMap(_.getHostnames).contains("hostname")
   ```

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> Put all feature-related code in the feature step itself
> -------------------------------------------------------
>
>                 Key: SPARK-25877
>                 URL: https://issues.apache.org/jira/browse/SPARK-25877
>             Project: Spark
>          Issue Type: Improvement
>          Components: Kubernetes
>    Affects Versions: 2.4.0
>            Reporter: Marcelo Vanzin
>            Priority: Major
>
> This is a child task of SPARK-25874. It covers having all the code related to 
> features in the feature steps themselves, including logic about whether a 
> step should be applied or not.
> Please refer to the parent bug for further details.



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