我有以下示例代码片段。 哪个是正确进行演员表的方法?
JavaPairDStream<String, String> tweets = dStream.mapToPair( record -> new Tuple2<>( record.key() , record.value() ) );
JavaPairDStream<Tuple2<String, String>, Integer> result = count_hashtag_trend( tweets );
JavaPairRDD<Tuple2<String, String>, Integer> toPrint =
jssc.sparkContext().parallelizePairs( **.. ?..** )
toPrint.foreach( elem -> storeOnCassandra( "tweetkeyspace.realtime_hashtag_trend",elem ) );