dengziming commented on a change in pull request #1151: [HUDI-476] Add hudi-examples module URL: https://github.com/apache/incubator-hudi/pull/1151#discussion_r379895098
########## File path: hudi-examples/src/main/java/org/apache/hudi/examples/deltastreamer/HoodieDeltaStreamerKafkaSourceExample.java ########## @@ -0,0 +1,87 @@ +/* + * 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.hudi.examples.deltastreamer; + +import org.apache.hudi.DataSourceWriteOptions; +import org.apache.hudi.examples.common.HoodieExampleDataGenerator; +import org.apache.hudi.examples.common.HoodieExampleSparkUtils; +import org.apache.hudi.utilities.deltastreamer.HoodieDeltaStreamer; +import org.apache.hudi.utilities.sources.JsonKafkaSource; +import org.apache.hudi.utilities.transform.IdentityTransformer; + +import com.beust.jcommander.JCommander; +import org.apache.spark.SparkConf; +import org.apache.spark.api.java.JavaSparkContext; + + +/** + * Simple examples of #{@link HoodieDeltaStreamer} from #{@link JsonKafkaSource}. + * + * To run this example, you should + * 1. Start Zookeeper and the Kafka demo server + * 2. For running in IDE, set VM options `-Dspark.master=local[2]` + * 3. For running in shell, using `spark-submit` + * 4. produce some data to hoodie-source-topic configured by `hoodie.deltastreamer.source.kafka.topic` + * + * Usage: HoodieDeltaStreamerKafkaSourceExample \ + * --target-base-path /tmp/hoodie/kafkadeltatable \ + * --table-type MERGE_ON_READ \ + * --target-table kafkadeltatable + */ +public class HoodieDeltaStreamerKafkaSourceExample { + + public static void main(String[] args) throws Exception { + + final HoodieDeltaStreamer.Config cfg = defaultKafkaDeltaStreamerConfig(); + new JCommander(cfg).parse(args); + + SparkConf sparkConf = HoodieExampleSparkUtils.defaultSparkConf("hoodie-delta-streamer-kafka-source-example"); + JavaSparkContext jsc = new JavaSparkContext(sparkConf); + + try { + new HoodieDeltaStreamer(cfg, jsc).sync(); + } finally { + jsc.stop(); + } + } + + /** + * also see #{@link HoodieDeltaStreamer.Config} for more params. + * @return default params for Kafka DeltaStreamer + */ + private static HoodieDeltaStreamer.Config defaultKafkaDeltaStreamerConfig() { + + HoodieDeltaStreamer.Config cfg = new HoodieDeltaStreamer.Config(); + + cfg.configs.add(String.format("%s=uuid", DataSourceWriteOptions.RECORDKEY_FIELD_OPT_KEY())); Review comment: ok, good. ---------------------------------------------------------------- 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
