gaborgsomogyi commented on a change in pull request #25412: 
[SPARK-28691][EXAMPLES] Add Java/Scala DirectKerberizedKafkaWordCount examples
URL: https://github.com/apache/spark/pull/25412#discussion_r313785263
 
 

 ##########
 File path: 
examples/src/main/scala/org/apache/spark/examples/streaming/DirectKerberizedKafkaWordCount.scala
 ##########
 @@ -0,0 +1,90 @@
+/*
+ * 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.
+ */
+
+// scalastyle:off println
+package org.apache.spark.examples.streaming
+
+import org.apache.kafka.clients.CommonClientConfigs
+import org.apache.kafka.clients.consumer.ConsumerConfig
+import org.apache.kafka.common.security.auth.SecurityProtocol
+import org.apache.kafka.common.serialization.StringDeserializer
+
+import org.apache.spark.SparkConf
+import org.apache.spark.streaming._
+import org.apache.spark.streaming.kafka010._
+
+/**
+ * Consumes messages from one or more topics in Kafka and does wordcount.
+ * Usage: DirectKerberizedKafkaWordCount <brokers> <topics>
+ *   <brokers> is a list of one or more Kafka brokers
+ *   <groupId> is a consumer group name to consume from topics
+ *   <topics> is a list of one or more kafka topics to consume from
+ *
+ * Example:
+ *    $ bin/run-example --files ${path}/kafka_jaas.conf \
 
 Review comment:
   The most used scenario is the keytab one. There are other ways like cache, 
etc... but such things can be found out based on this example + the jaas 
specification.

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