Github user gaborgsomogyi commented on a diff in the pull request: https://github.com/apache/spark/pull/22598#discussion_r222082853 --- Diff: external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaSecurityHelper.scala --- @@ -0,0 +1,86 @@ +/* + * 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.sql.kafka010 + +import org.apache.hadoop.security.UserGroupInformation +import org.apache.hadoop.security.token.{Token, TokenIdentifier} + +import org.apache.spark.SparkConf +import org.apache.spark.internal.Logging +import org.apache.spark.internal.config._ + +private[kafka010] object KafkaSecurityHelper extends Logging { + def getKeytabJaasParams(sparkConf: SparkConf): Option[String] = { + if (sparkConf.get(KEYTAB).nonEmpty) { + Some(getKrbJaasParams(sparkConf)) + } else { + None + } + } + + def getKrbJaasParams(sparkConf: SparkConf): String = { + val serviceName = sparkConf.get(KAFKA_KERBEROS_SERVICE_NAME) + require(serviceName.nonEmpty, "Kerberos service name must be defined") + val keytab = sparkConf.get(KEYTAB) + require(keytab.nonEmpty, "Keytab must be defined") + val principal = sparkConf.get(PRINCIPAL) + require(principal.nonEmpty, "Principal must be defined") + + val params = + s""" + |com.sun.security.auth.module.Krb5LoginModule required --- End diff -- Fixed.
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