public static void main(String[] args) {
    SparkConf conf = new SparkConf().setAppName("Example").setMaster("local[2]");
    // Create a StreamingContext with a 1-second batch size from a SparkConf
    JavaStreamingContext jssc =
        new JavaStreamingContext(
            conf, Durations.seconds(10)); // Create a DStream from all the input on port 7777
    JavaDStream<String> lines = jssc.socketTextStream("localhost", 7777);
    // Filter our DStream for lines with "error"

    // Split up into words.
    final JavaDStream<String> wordDStream =
        lines.flatMap(
            new FlatMapFunction<String, String>() {
              public Iterable<String> call(String x) {
                return Arrays.asList(x.split(" "));
              }
            });

    final JavaPairDStream<String, Integer> wordPairDStream =
        wordDStream.mapToPair(
            new PairFunction<String, String, Integer>() {
              @Override
              public Tuple2<String, Integer> call(String s) throws Exception {
                return new Tuple2<String, Integer>(s, 1);
              }
            });

    final JavaPairDStream<String, Integer> totalWordPairDStream =
        wordPairDStream.reduceByKeyAndWindow(
            new Function2<Integer, Integer, Integer>() {
              @Override
              public Integer call(Integer a, Integer b) throws Exception {
                return a + b;
              }
            },
            Durations.seconds(30),
            Durations.seconds(20));

    //        totalWordPairDStream.foreach(new Function2<JavaPairRDD<String, Integer>, Time, Void>()
    // {
    //            @Override
    //            public Void call(JavaPairRDD<String, Integer> wordPairRDD, Time time) throws
    // Exception {
    //
    //                final List<Tuple2<String, Integer>> collect = wordPairRDD.collect();
    //                for (Tuple2<String, Integer> t : collect) {
    //                    System.out.println("the value is t" +  t._1() + "," + t._2());
    //                }
    //
    //                return null;
    //            }
    //        });

    totalWordPairDStream.print();

    // Start our streaming context and wait for it to "finish"
    jssc.start();
    // Wait for the job to finish
    jssc.awaitTermination();
  }
  public static void main(String[] args) {
    SparkConf conf =
        new SparkConf()
            .setMaster("local[4]")
            .setAppName("SparkStreamingPullDataFromFlume for Java");
    JavaStreamingContext jsc = new JavaStreamingContext(conf, Durations.seconds(30));
    //		JavaReceiverInputDStream<SparkFlumeEvent> lines = FlumeUtils.createStream(jsc,"master1",
    // 9999); flume push data to Spark Streaming
    JavaReceiverInputDStream<SparkFlumeEvent> lines =
        FlumeUtils.createPollingStream(
            jsc, "master1", 9999); // Spark Streaming pull data from flume
    JavaDStream<String> words =
        lines.flatMap(
            new FlatMapFunction<SparkFlumeEvent, String>() {
              private static final long serialVersionUID = 1L;

              @Override
              public Iterable<String> call(SparkFlumeEvent event) throws Exception {
                String line = new String(event.event().getBody().array());
                return Arrays.asList(line.split(" "));
              }
            });

    JavaPairDStream<String, Integer> pairs =
        words.mapToPair(
            new PairFunction<String, String, Integer>() {

              private static final long serialVersionUID = 1L;

              @Override
              public Tuple2<String, Integer> call(String word) throws Exception {
                return new Tuple2<String, Integer>(word, 1);
              }
            });

    JavaPairDStream<String, Integer> wordsCount =
        pairs.reduceByKey(
            new Function2<
                Integer, Integer, Integer>() { // 对相同的Key,进行Value的累计(包括Local和Reducer级别同时Reduce)

              private static final long serialVersionUID = 1L;

              @Override
              public Integer call(Integer v1, Integer v2) throws Exception {
                return v1 + v2;
              }
            });

    wordsCount.print();

    jsc.start();

    jsc.awaitTermination();
    jsc.close();
  }
  public static void main(String[] args) throws Exception {
    if (args.length < 1) {
      System.err.println("Usage: JavaQueueStream <master>");
      System.exit(1);
    }

    StreamingExamples.setStreamingLogLevels();

    // Create the context
    JavaStreamingContext ssc =
        new JavaStreamingContext(
            args[0],
            "QueueStream",
            new Duration(1000),
            System.getenv("SPARK_HOME"),
            JavaStreamingContext.jarOfClass(JavaQueueStream.class));

    // Create the queue through which RDDs can be pushed to
    // a QueueInputDStream
    Queue<JavaRDD<Integer>> rddQueue = new LinkedList<JavaRDD<Integer>>();

    // Create and push some RDDs into the queue
    List<Integer> list = Lists.newArrayList();
    for (int i = 0; i < 1000; i++) {
      list.add(i);
    }

    for (int i = 0; i < 30; i++) {
      rddQueue.add(ssc.sparkContext().parallelize(list));
    }

    // Create the QueueInputDStream and use it do some processing
    JavaDStream<Integer> inputStream = ssc.queueStream(rddQueue);
    JavaPairDStream<Integer, Integer> mappedStream =
        inputStream.mapToPair(
            new PairFunction<Integer, Integer, Integer>() {
              @Override
              public Tuple2<Integer, Integer> call(Integer i) {
                return new Tuple2<Integer, Integer>(i % 10, 1);
              }
            });
    JavaPairDStream<Integer, Integer> reducedStream =
        mappedStream.reduceByKey(
            new Function2<Integer, Integer, Integer>() {
              @Override
              public Integer call(Integer i1, Integer i2) {
                return i1 + i2;
              }
            });

    reducedStream.print();
    ssc.start();
    ssc.awaitTermination();
  }
  public static void main(String[] args) {
    // Create a Spark Context.
    SparkConf conf = new SparkConf().setAppName("Activity").set("spark.eventLog.enabled", "true");
    ;
    JavaSparkContext sc = new JavaSparkContext(conf);
    JavaStreamingContext jssc = new JavaStreamingContext(sc, STREAM_INTERVAL);
    String TOPIC = "activityevent";
    String zkQuorum = "localhost:2181";
    String group = "1";
    Map<String, Integer> topicMap = new HashMap<String, Integer>();
    topicMap.put(TOPIC, 1);

    JavaPairReceiverInputDStream<String, String> messages =
        KafkaUtils.createStream(jssc, zkQuorum, group, topicMap);
    // messages.print();
    JavaDStream<String> activitydatastream =
        messages.map(
            new Function<Tuple2<String, String>, String>() {
              @Override
              public String call(Tuple2<String, String> tuple2) {
                return tuple2._2();
              }
            });

    final Long teamWindowDurationMs = Durations.minutes(1).milliseconds();
    JavaDStream<Activity> ActivityEntryDStream = activitydatastream.map(Activity::parseFromLine);
    JavaPairDStream<WithTimestamp<String>, Double> ActivityWindowDStream =
        ActivityEntryDStream.mapToPair(
                windows ->
                    new Tuple2<>(
                        WithTimestamp.create(
                            windows.getActivity(),
                            // Apply Fixed Window by rounding the timestamp down to the nearest
                            // multiple of the window size
                            (convertMillsecs(windows.getTimestamp()) / teamWindowDurationMs)
                                * teamWindowDurationMs),
                        windows.getXaxis()))
            .reduceByKey(SUM_REDUCER);

    ActivityWindowDStream.print();

    jssc.start();
    jssc.awaitTermination();
    // jssc.close();
    sc.stop();
    sc.close();
  }
  public static void main(String[] args) throws Exception {
    if (args.length < 2) {
      System.err.println(
          "Usage: JavaDirectKafkaWordCount <brokers> <topics>\n"
              + "  <brokers> is a list of one or more Kafka brokers\n"
              + "  <topics> is a list of one or more kafka topics to consume from\n\n");
      System.exit(1);
    }

    String brokers = args[0];
    String topics = args[1];

    // Create context with a 2 seconds batch interval
    SparkConf sparkConf = new SparkConf().setAppName("JavaDirectKafkaWordCount");
    JavaStreamingContext jssc = new JavaStreamingContext(sparkConf, Durations.seconds(2));

    Set<String> topicsSet = new HashSet<>(Arrays.asList(topics.split(",")));
    Map<String, String> kafkaParams = new HashMap<>();
    kafkaParams.put("metadata.broker.list", brokers);

    // Create direct kafka stream with brokers and topics
    JavaPairInputDStream<String, String> messages =
        KafkaUtils.createDirectStream(
            jssc,
            String.class,
            String.class,
            StringDecoder.class,
            StringDecoder.class,
            kafkaParams,
            topicsSet);

    // Get the lines, split them into words, count the words and print
    JavaDStream<String> lines =
        messages.map(
            new Function<Tuple2<String, String>, String>() {
              @Override
              public String call(Tuple2<String, String> tuple2) {
                return tuple2._2();
              }
            });

    JavaDStream<String> words =
        lines.flatMap(
            new FlatMapFunction<String, String>() {
              @Override
              public Iterable<String> call(String x) {
                return Arrays.asList(SPACE.split(x));
              }
            });
    JavaPairDStream<String, Integer> wordCounts =
        words
            .mapToPair(
                new PairFunction<String, String, Integer>() {
                  @Override
                  public Tuple2<String, Integer> call(String s) {
                    return new Tuple2<>(s, 1);
                  }
                })
            .reduceByKey(
                new Function2<Integer, Integer, Integer>() {
                  @Override
                  public Integer call(Integer i1, Integer i2) {
                    return i1 + i2;
                  }
                });
    wordCounts.print();

    // Start the computation
    jssc.start();
    jssc.awaitTermination();
  }
Exemple #6
0
  public static void main(String[] args) {

    String master = System.getenv("MASTER");
    if (master == null) {
      master = "local[2]";
    }

    SparkConf conf = new SparkConf().setAppName("Voter Application").setMaster(master);

    Logger.getLogger("org").setLevel(Level.ERROR);
    Logger.getLogger("akka").setLevel(Level.ERROR);

    final Long batch_duration = Long.valueOf(args[0]);
    JavaStreamingContext jssc =
        new JavaStreamingContext(conf, new Duration(Integer.valueOf(args[0])));

    jssc.checkpoint(".");

    JavaReceiverInputDStream<String> votes = jssc.receiverStream(new Voter("localhost", 6789));

    // transform text line stream to PhoneCall stream
    JavaDStream<PhoneCall> phoneCalls =
        votes.map(
            new Function<String, PhoneCall>() {
              public PhoneCall call(String s) {
                return getPhoneCall(s);
              }
            });

    JavaDStream<Long> counts = votes.count();
    counts.print();

    // create updateFunction which is used to update the total call count for each phone number
    Function2<List<Integer>, Optional<Integer>, Optional<Integer>> updateFunction =
        new Function2<List<Integer>, Optional<Integer>, Optional<Integer>>() {
          public Optional<Integer> call(List<Integer> values, Optional<Integer> state) {
            // add the new values with the previous running count to get the
            // new count
            Integer sum = 0;
            for (Integer i : values) {
              sum += i;
            }
            Integer newSum = sum + state.or(0);
            return Optional.of(newSum);
          }
        };

    //
    JavaPairDStream<Long, Integer> calls =
        phoneCalls.mapToPair(
            new PairFunction<PhoneCall, Long, Integer>() {
              public Tuple2<Long, Integer> call(PhoneCall x) {
                return new Tuple2<Long, Integer>(x.phoneNumber, 1);
              }
            });

    // generate the accumulated count for phone numbers
    final JavaPairDStream<Long, Integer> callNumberCounts = calls.updateStateByKey(updateFunction);
    // callNumberCounts.print();

    JavaPairDStream<Long, PhoneCall> pairVotes =
        phoneCalls.mapToPair(
            new PairFunction<PhoneCall, Long, PhoneCall>() {
              public Tuple2<Long, PhoneCall> call(PhoneCall call) throws Exception {
                return new Tuple2<Long, PhoneCall>(call.voteId, call);
              }
            });

    // generate the validate phone numbers, which is still allowed to send vote
    JavaPairDStream<Long, Integer> allowedCalls =
        callNumberCounts.filter(
            new Function<Tuple2<Long, Integer>, Boolean>() {

              public Boolean call(Tuple2<Long, Integer> v1) throws Exception {
                if (v1._2() > Voter.MAX_VOTES) return false;

                return true;
              }
            });

    // allowedCalls.print();

    // get validate contestant phone calls
    JavaDStream<PhoneCall> validContestantPhoneCalls =
        phoneCalls.filter(
            new Function<PhoneCall, Boolean>() {
              public Boolean call(PhoneCall call) {
                if (call.contestantNumber > Voter.NUM_CONTESTANTS) return false;
                return true;
              }
            });

    JavaPairDStream<Long, PhoneCall> anotherTemporyPhoneCalls =
        validContestantPhoneCalls.mapToPair(
            new PairFunction<PhoneCall, Long, PhoneCall>() {
              public Tuple2<Long, PhoneCall> call(PhoneCall x) {
                return new Tuple2<Long, PhoneCall>(x.phoneNumber, x);
              }
            });

    // get validate phone call records
    JavaPairDStream<Long, Tuple2<PhoneCall, Integer>> validatePhoneCalls =
        anotherTemporyPhoneCalls.join(allowedCalls);

    // validatePhoneCalls.print();

    JavaDStream<PhoneCall> validateCalls =
        validatePhoneCalls.transform(
            new Function<JavaPairRDD<Long, Tuple2<PhoneCall, Integer>>, JavaRDD<PhoneCall>>() {
              public JavaRDD<PhoneCall> call(JavaPairRDD<Long, Tuple2<PhoneCall, Integer>> v1)
                  throws Exception {
                JavaRDD<PhoneCall> item =
                    v1.map(
                        new Function<Tuple2<Long, Tuple2<PhoneCall, Integer>>, PhoneCall>() {
                          public PhoneCall call(Tuple2<Long, Tuple2<PhoneCall, Integer>> validItem)
                              throws Exception {
                            return validItem._2()._1();
                          }
                        });
                return item;
              }
            });

    // validateCalls.print();

    // save all votes with redis
    validateCalls.foreachRDD(
        new Function<JavaRDD<PhoneCall>, Void>() {

          public Void call(JavaRDD<PhoneCall> rdd) throws Exception {

            rdd.foreach(
                new VoidFunction<PhoneCall>() {

                  public void call(PhoneCall call) throws Exception {
                    // System.out.println(call.toString());
                    String key = String.valueOf(call.voteId);
                    String value = call.getContent();

                    // save <key,value> using redis
                    JedisPool pool = new JedisPool(new JedisPoolConfig(), "localhost");
                    Jedis jedis = pool.getResource();
                    try {
                      jedis.set(key, value);
                    } finally {
                      if (null != jedis) {
                        jedis.close();
                      }
                    }
                    /// ... when closing your application:
                    pool.destroy();
                  }
                });

            return null;
          }
        });

    // validate calls
    JavaPairDStream<Integer, Integer> contestantVotes =
        validateCalls.mapToPair(
            new PairFunction<PhoneCall, Integer, Integer>() {
              public Tuple2<Integer, Integer> call(PhoneCall x) {
                return new Tuple2<Integer, Integer>(x.contestantNumber, 1);
              }
            });

    // use window to get generate leaderboard
    Integer size = Integer.valueOf(args[1]);
    Integer slide = Integer.valueOf(args[2]);

    JavaDStream<PhoneCall> windowCalls =
        validateCalls.window(new Duration(size), new Duration(slide));
    // windowCalls.print();

    // generate window contestant count
    JavaPairDStream<Integer, Integer> windowContestantNums =
        windowCalls.mapToPair(
            new PairFunction<PhoneCall, Integer, Integer>() {
              public Tuple2<Integer, Integer> call(PhoneCall x) {
                return new Tuple2<Integer, Integer>(x.contestantNumber, 1);
              }
            });
    JavaPairDStream<Integer, Integer> windContestantCounts =
        windowContestantNums.reduceByKey(
            new Function2<Integer, Integer, Integer>() {
              public Integer call(Integer i1, Integer i2) throws Exception {

                return i1 + i2;
              }
            });
    windContestantCounts.print();

    // generate the accumulated count for contestants
    JavaPairDStream<Integer, Integer> totalContestantCounts =
        contestantVotes.updateStateByKey(updateFunction);

    // used for sorting
    PairFunction<Tuple2<Integer, Integer>, Integer, Integer> swapFunction =
        new PairFunction<Tuple2<Integer, Integer>, Integer, Integer>() {
          public Tuple2<Integer, Integer> call(Tuple2<Integer, Integer> in) {
            return in.swap();
          }
        };

    JavaPairDStream<Integer, Integer> swappedTotalContestantCounts =
        totalContestantCounts.mapToPair(swapFunction);

    JavaPairDStream<Integer, Integer> sortedTotalContestantCounts =
        swappedTotalContestantCounts.transformToPair(
            new Function<JavaPairRDD<Integer, Integer>, JavaPairRDD<Integer, Integer>>() {

              public JavaPairRDD<Integer, Integer> call(JavaPairRDD<Integer, Integer> in)
                  throws Exception {
                return in.sortByKey(false);
              }
            });

    sortedTotalContestantCounts.print();

    // make some statistics
    phoneCalls.foreachRDD(
        new Function<JavaRDD<PhoneCall>, Void>() {

          public Void call(JavaRDD<PhoneCall> rdd) throws Exception {
            Long count = rdd.count();
            // System.out.println( "count : " + count );
            Double throughput = (count.doubleValue() * 1000 / batch_duration.doubleValue());
            System.out.println("Current rate = " + throughput + " records / second");

            XMemcachedClientBuilder builder =
                new XMemcachedClientBuilder(AddrUtil.getAddresses("localhost:11211"));
            XMemcachedClient client = (XMemcachedClient) builder.build();
            client.setPrimitiveAsString(true);

            Long currentTimeStamp = System.currentTimeMillis();
            // System.out.println("End time: " + currentTimeStamp);
            client.add(currentTimeStamp.toString(), 0, throughput);

            return null;
          }
        });

    jssc.start(); // Start the computation
    jssc.awaitTermination(); // Wait for the computation to terminate
  }
  public static void main(String[] args) {

    // Create the context with a 10 second batch size
    SparkConf sparkConf = new SparkConf().setAppName("Assignment");
    JavaStreamingContext ssc = new JavaStreamingContext(sparkConf, new Duration(10000));

    // Create a JavaReceiverInputDStream on target ip:port and count the
    // words in input stream of \n delimited text (eg. generated by 'nc')
    // Note that no duplication in storage level only for running locally.
    // Replication necessary in distributed scenario for fault tolerance.
    JavaReceiverInputDStream<String> lines =
        ssc.socketTextStream(
            "localhost", Integer.parseInt("9999"), StorageLevels.MEMORY_AND_DISK_SER);

    JavaDStream<String> words =
        lines.flatMap(
            new FlatMapFunction<String, String>() {

              @Override
              public Iterable<String> call(String x) {

                List<String> allMatches = new ArrayList<String>();

                Matcher matcher = SPACE.matcher(x);

                while (matcher.find()) {
                  allMatches.add(matcher.group().toLowerCase());
                }

                return Lists.newArrayList(allMatches.toArray(new String[0]));
              }
            });

    JavaPairDStream<String, Integer> wordCounts =
        words.mapToPair(
            new PairFunction<String, String, Integer>() {

              @Override
              public Tuple2<String, Integer> call(String s) {
                return new Tuple2<String, Integer>(s, 1);
              }
            });

    // Reduce function adding two integers, defined separately for clarity
    Function2<Integer, Integer, Integer> reduceFunc =
        new Function2<Integer, Integer, Integer>() {
          @Override
          public Integer call(Integer i1, Integer i2) throws Exception {
            return i1 + i2;
          }
        };

    JavaPairDStream<String, Integer> windowedWordCounts =
        wordCounts.reduceByKeyAndWindow(reduceFunc, new Duration(30000), new Duration(10000));

    windowedWordCounts.print();

    ssc.start();

    ssc.awaitTermination();
  }
  public static void main(String[] args) {
    if (args.length < 4) {
      System.err.println("Usage: JavaKafkaWordCount <zkQuorum> <group> <topics> <numThreads>");
      System.exit(1);
    }

    StreamingExamples.setStreamingLogLevels();
    // SparkConf sparkConf = new SparkConf().setAppName("JavaKafkaWordCount");
    // sparkConf.setMaster("spark://60f81dc6426c:7077");
    // SparkConf sparkConf = new
    // SparkConf().setAppName("JavaKafkaWordCount").setMaster("spark://60f81dc6426c:7077");

    // Create the context with a 1 second batch size
    JavaStreamingContext jssc =
        new JavaStreamingContext("local[4]", "JavaKafkaWordCount", new Duration(2000));

    int numThreads = Integer.parseInt(args[3]);
    Logger.getLogger("org").setLevel(Level.OFF);
    Logger.getLogger("akka").setLevel(Level.OFF);
    Map<String, Integer> topicMap = new HashMap<String, Integer>();
    String[] topics = args[2].split(",");
    for (String topic : topics) {
      topicMap.put(topic, numThreads);
    }
    /* for(String t: topic)
    {
        topicMap.put(t, new Integer(3));
    }*/
    // NotSerializable notSerializable = new NotSerializable();
    // JavaRDD<String> rdd = sc.textFile("/tmp/myfile");

    // rdd.map(s -> notSerializable.doSomething(s)).collect();
    JavaPairReceiverInputDStream<String, String> messages =
        KafkaUtils.createStream(jssc, args[0], args[1], topicMap);
    // JavaPairReceiverInputDStream<String, String> kafkaStream =
    //   KafkaUtils.createStream(jssc, "localhost:2181","streamingContext",
    //		  topicMap);

    System.out.println("Connection !!!!");
    /*JavaDStream<String> data = messages.map(new Function<Tuple2<String, String>, String>()
    {
        public String call(Tuple2<String, String> message)
        {
            return message._2();
        }
    }
    );*/

    JavaDStream<String> lines =
        messages.map(
            new Function<Tuple2<String, String>, String>() {
              @Override
              public String call(Tuple2<String, String> tuple2) {
                return tuple2._2();
              }
            });

    JavaDStream<String> words =
        lines.flatMap(
            new FlatMapFunction<String, String>() {
              @Override
              public Iterable<String> call(String x) {
                return Lists.newArrayList(SPACE.split(x));
              }
            });

    JavaPairDStream<String, Integer> wordCounts =
        words
            .mapToPair(
                new PairFunction<String, String, Integer>() {
                  @Override
                  public Tuple2<String, Integer> call(String s) {
                    return new Tuple2<String, Integer>(s, 1);
                  }
                })
            .reduceByKey(
                new Function2<Integer, Integer, Integer>() {
                  @Override
                  public Integer call(Integer i1, Integer i2) {
                    return i1 + i2;
                  }
                });

    wordCounts.print();
    jssc.start();
    jssc.awaitTermination();
  }