如何将list对象转换为javadstream spark?

dhxwm5r4  于 2021-05-27  发布在  Spark
关注(0)|答案(1)|浏览(491)

我有以下清单:

List<Tuple2<Tuple3<String, Long, Object>, Tuple2<Long, Object[]>>> rddQueue =
    Arrays.asList(tupleList);

如何将其转换为javadstream spark?提前谢谢!

2izufjch

2izufjch1#

你可以用 JavaStreamingContext 和一个 Queue<T> :

List<Tuple2<Tuple3<String, Long, Object>, Tuple2<Long, Object[]>>> 
  list = Arrays.asList();

// Random batch time, for the sake of the example.
JavaStreamingContext jssc = 
  new JavaStreamingContext("local[*]", "TestApp", new Duration(4000));

Queue<JavaRDD<Tuple2<Tuple3<String, Long, Object>, Tuple2<Long, Object[]>>>> rddQueue = 
  new LinkedList<>();

rddQueue.add(jssc.sparkContext().parallelize(list));

JavaDStream<Tuple2<Tuple3<String, Long, Object>, Tuple2<Long, Object[]>>> dStream = 
  jssc.queueStream(rddQueue);

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