Github user liyinan926 commented on a diff in the pull request:
https://github.com/apache/spark/pull/21669#discussion_r223491099
--- Diff:
resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/features/hadooputils/HadoopBootstrapUtil.scala
---
@@ -0,0 +1,238 @@
+/*
+ * 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.hadooputils
+
+import java.io.File
+
+import scala.collection.JavaConverters._
+
+import com.google.common.base.Charsets
+import com.google.common.io.Files
+import io.fabric8.kubernetes.api.model._
+
+import org.apache.spark.SparkException
+import org.apache.spark.deploy.k8s.Constants._
+import org.apache.spark.deploy.k8s.SparkPod
+
+private[spark] object HadoopBootstrapUtil {
+
+ /**
+ * Mounting the DT secret for both the Driver and the executors
+ *
+ * @param dtSecretName Name of the secret that stores the Delegation
Token
+ * @param dtSecretItemKey Name of the Item Key storing the Delegation
Token
+ * @param userName Name of the SparkUser to set SPARK_USER
+ * @param maybeFileLocation Optional Location of the krb5 file
+ * @param newKrb5ConfName Optional location of the ConfigMap for Krb5
+ * @param maybeKrb5ConfName Optional name of ConfigMap for Krb5
+ * @param pod Input pod to be appended to
+ * @return a modified SparkPod
+ */
+ def bootstrapKerberosPod(
+ dtSecretName: String,
+ dtSecretItemKey: String,
+ userName: String,
+ maybeFileLocation: Option[String],
--- End diff --
You don't need `maybeFileLocation` given the `newKrb5ConfName` below. BTW:
`newKrb5ConfName` should be `Option[String] instead.`
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