Github user gaborgsomogyi commented on a diff in the pull request:
https://github.com/apache/spark/pull/22598#discussion_r233858643
--- Diff:
core/src/main/scala/org/apache/spark/deploy/security/KafkaTokenUtil.scala ---
@@ -0,0 +1,146 @@
+/*
+ * 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.security
+
+import java.text.SimpleDateFormat
+import java.util.Properties
+
+import org.apache.hadoop.io.Text
+import org.apache.hadoop.security.token.{Token, TokenIdentifier}
+import
org.apache.hadoop.security.token.delegation.AbstractDelegationTokenIdentifier
+import org.apache.kafka.clients.CommonClientConfigs
+import org.apache.kafka.clients.admin.{AdminClient,
CreateDelegationTokenOptions}
+import org.apache.kafka.common.config.SaslConfigs
+import org.apache.kafka.common.security.token.delegation.DelegationToken
+
+import org.apache.spark.SparkConf
+import org.apache.spark.internal.Logging
+import org.apache.spark.internal.config._
+
+private[spark] object KafkaTokenUtil extends Logging {
+ private[spark] val TOKEN_KIND = new Text("KAFKA_DELEGATION_TOKEN")
--- End diff --
Fixed.
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