嗨,大家好我正在與kafka> spark streaming> Elasticsearch合作。 但我不做火花流JavaInputDStream JSON elasticsearch。如何將JavaInputDStream JSON轉換爲ElasticSearch JAVA
我的代碼:
SparkConf conf = new SparkConf()
.setAppName("Streaming")
.setMaster("local")
.set("es.nodes","localhost:9200")
.set("es.index.auto.create","true");
JavaStreamingContext streamingContext = new JavaStreamingContext(conf, new Duration(5000));
Map<String, Object> kafkaParams = new HashMap<>();
kafkaParams.put("bootstrap.servers", "localhost:9092");
kafkaParams.put("key.deserializer", StringDeserializer.class);
kafkaParams.put("value.deserializer", StringDeserializer.class);
kafkaParams.put("group.id", "exastax");
kafkaParams.put("auto.offset.reset", "latest");
kafkaParams.put("enable.auto.commit", false);
Collection<String> topics = Arrays.asList("loglar");
JavaInputDStream<ConsumerRecord<String, String>> stream =
KafkaUtils.createDirectStream(
streamingContext,
LocationStrategies.PreferConsistent(),
ConsumerStrategies.<String, String>Subscribe(topics, kafkaParams)
);
JavaPairDStream<String, String> finisStream = stream.mapToPair(record -> new Tuple2<>("", record.value()));
finisStream.print();
JavaEsSparkStreaming.saveJsonToEs(finisStream,"spark/docs");
streamingContext.start();
streamingContext.awaitTermination();
}
JavaEsSparkStreaming.saveJsonToEs(finisStream, 「火花/文檔」); >> finisStream不工作,因爲它不是JavaDStream。 如何轉換JavaDStream?