hddong 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_r314146199
########## File path: examples/src/main/java/org/apache/spark/examples/streaming/JavaDirectKerberizedKafkaWordCount.java ########## @@ -0,0 +1,118 @@ +/* + * 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.examples.streaming; + +import java.util.HashMap; +import java.util.HashSet; +import java.util.Arrays; +import java.util.Map; +import java.util.Set; +import java.util.regex.Pattern; + +import scala.Tuple2; + +import org.apache.kafka.clients.CommonClientConfigs; +import org.apache.kafka.common.security.auth.SecurityProtocol; +import org.apache.kafka.clients.consumer.ConsumerConfig; +import org.apache.kafka.clients.consumer.ConsumerRecord; +import org.apache.kafka.common.serialization.StringDeserializer; + +import org.apache.spark.SparkConf; +import org.apache.spark.streaming.api.java.*; +import org.apache.spark.streaming.kafka010.ConsumerStrategies; +import org.apache.spark.streaming.kafka010.KafkaUtils; +import org.apache.spark.streaming.kafka010.LocationStrategies; +import org.apache.spark.streaming.Durations; + +/** + * Consumes messages from one or more topics in Kafka and does wordcount. + * Usage: JavaDirectKerberizedKafkaWordCount <brokers> <groupId> <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 ${path}/kafka_jaas.conf \ + * --driver-java-options "-Djava.security.auth.login.config=${path}/kafka_jaas.conf" \ + * --conf \ + * "spark.executor.extraJavaOptions=-Djava.security.auth.login.config=./kafka_jaas.conf" \ + * streaming.JavaDirectKerberizedKafkaWordCount broker1-host:port,broker2-host:port \ + * consumer-group topic1,topic2 + * + * kafka_jaas.conf can manually create, template as: + * KafkaClient { + * com.sun.security.auth.module.Krb5LoginModule required + * keyTab="${path_of_keytab}/kafka.service.keytab" Review comment: > Since the keytab file is not added to the `--files` section it must exist on every server. Worth to mention as prerequisite since it's not obvious for everybody. As cmd example show, `--file` should used. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
