示例#1
0
  @Test
  public void testChannelSelectors() {
    StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

    DataStreamSource<Long> src = env.generateSequence(0, 0);

    DataStream<Long> broadcast = src.broadcast();
    DataStreamSink<Long> broadcastSink = broadcast.print();
    StreamPartitioner<?> broadcastPartitioner =
        env.getStreamGraph()
            .getStreamEdges(src.getId(), broadcastSink.getTransformation().getId())
            .get(0)
            .getPartitioner();
    assertTrue(broadcastPartitioner instanceof BroadcastPartitioner);

    DataStream<Long> shuffle = src.shuffle();
    DataStreamSink<Long> shuffleSink = shuffle.print();
    StreamPartitioner<?> shufflePartitioner =
        env.getStreamGraph()
            .getStreamEdges(src.getId(), shuffleSink.getTransformation().getId())
            .get(0)
            .getPartitioner();
    assertTrue(shufflePartitioner instanceof ShufflePartitioner);

    DataStream<Long> forward = src.forward();
    DataStreamSink<Long> forwardSink = forward.print();
    StreamPartitioner<?> forwardPartitioner =
        env.getStreamGraph()
            .getStreamEdges(src.getId(), forwardSink.getTransformation().getId())
            .get(0)
            .getPartitioner();
    assertTrue(forwardPartitioner instanceof ForwardPartitioner);

    DataStream<Long> rebalance = src.rebalance();
    DataStreamSink<Long> rebalanceSink = rebalance.print();
    StreamPartitioner<?> rebalancePartitioner =
        env.getStreamGraph()
            .getStreamEdges(src.getId(), rebalanceSink.getTransformation().getId())
            .get(0)
            .getPartitioner();
    assertTrue(rebalancePartitioner instanceof RebalancePartitioner);

    DataStream<Long> global = src.global();
    DataStreamSink<Long> globalSink = global.print();
    StreamPartitioner<?> globalPartitioner =
        env.getStreamGraph()
            .getStreamEdges(src.getId(), globalSink.getTransformation().getId())
            .get(0)
            .getPartitioner();
    assertTrue(globalPartitioner instanceof GlobalPartitioner);
  }
示例#2
0
  @Test
  public void testTypeInfo() {
    StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

    DataStream<Long> src1 = env.generateSequence(0, 0);
    assertEquals(TypeExtractor.getForClass(Long.class), src1.getType());

    DataStream<Tuple2<Integer, String>> map =
        src1.map(
            new MapFunction<Long, Tuple2<Integer, String>>() {
              @Override
              public Tuple2<Integer, String> map(Long value) throws Exception {
                return null;
              }
            });

    assertEquals(TypeExtractor.getForObject(new Tuple2<>(0, "")), map.getType());

    DataStream<String> window =
        map.windowAll(GlobalWindows.create())
            .trigger(PurgingTrigger.of(CountTrigger.of(5)))
            .apply(
                new AllWindowFunction<Tuple2<Integer, String>, String, GlobalWindow>() {
                  @Override
                  public void apply(
                      GlobalWindow window,
                      Iterable<Tuple2<Integer, String>> values,
                      Collector<String> out)
                      throws Exception {}
                });

    assertEquals(TypeExtractor.getForClass(String.class), window.getType());

    DataStream<CustomPOJO> flatten =
        window
            .windowAll(GlobalWindows.create())
            .trigger(PurgingTrigger.of(CountTrigger.of(5)))
            .fold(
                new CustomPOJO(),
                new FoldFunction<String, CustomPOJO>() {
                  private static final long serialVersionUID = 1L;

                  @Override
                  public CustomPOJO fold(CustomPOJO accumulator, String value) throws Exception {
                    return null;
                  }
                });

    assertEquals(TypeExtractor.getForClass(CustomPOJO.class), flatten.getType());
  }
示例#3
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  @Test
  public void testTypeInfo() {
    StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

    DataStream<Long> src1 = env.generateSequence(0, 0);
    assertEquals(TypeExtractor.getForClass(Long.class), src1.getType());

    DataStream<Tuple2<Integer, String>> map =
        src1.map(
            new MapFunction<Long, Tuple2<Integer, String>>() {
              @Override
              public Tuple2<Integer, String> map(Long value) throws Exception {
                return null;
              }
            });

    assertEquals(TypeExtractor.getForObject(new Tuple2<Integer, String>(0, "")), map.getType());

    WindowedDataStream<String> window =
        map.window(Count.of(5))
            .mapWindow(
                new WindowMapFunction<Tuple2<Integer, String>, String>() {
                  @Override
                  public void mapWindow(
                      Iterable<Tuple2<Integer, String>> values, Collector<String> out)
                      throws Exception {}
                });

    assertEquals(TypeExtractor.getForClass(String.class), window.getType());

    DataStream<CustomPOJO> flatten =
        window
            .foldWindow(
                new CustomPOJO(),
                new FoldFunction<String, CustomPOJO>() {
                  @Override
                  public CustomPOJO fold(CustomPOJO accumulator, String value) throws Exception {
                    return null;
                  }
                })
            .flatten();

    assertEquals(TypeExtractor.getForClass(CustomPOJO.class), flatten.getType());
  }
示例#4
0
  /**
   * Tests {@link SingleOutputStreamOperator#name(String)} functionality.
   *
   * @throws Exception
   */
  @Test
  public void testNaming() throws Exception {
    StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

    DataStream<Long> dataStream1 =
        env.generateSequence(0, 0)
            .name("testSource1")
            .map(
                new MapFunction<Long, Long>() {
                  @Override
                  public Long map(Long value) throws Exception {
                    return null;
                  }
                })
            .name("testMap");

    DataStream<Long> dataStream2 =
        env.generateSequence(0, 0)
            .name("testSource2")
            .map(
                new MapFunction<Long, Long>() {
                  @Override
                  public Long map(Long value) throws Exception {
                    return null;
                  }
                })
            .name("testMap");

    DataStreamSink<Long> connected =
        dataStream1
            .connect(dataStream2)
            .flatMap(
                new CoFlatMapFunction<Long, Long, Long>() {
                  private static final long serialVersionUID = 1L;

                  @Override
                  public void flatMap1(Long value, Collector<Long> out) throws Exception {}

                  @Override
                  public void flatMap2(Long value, Collector<Long> out) throws Exception {}
                })
            .name("testCoFlatMap")
            .windowAll(GlobalWindows.create())
            .trigger(PurgingTrigger.of(CountTrigger.of(10)))
            .fold(
                0L,
                new FoldFunction<Long, Long>() {
                  private static final long serialVersionUID = 1L;

                  @Override
                  public Long fold(Long accumulator, Long value) throws Exception {
                    return null;
                  }
                })
            .name("testWindowFold")
            .print();

    // test functionality through the operator names in the execution plan
    String plan = env.getExecutionPlan();

    assertTrue(plan.contains("testSource1"));
    assertTrue(plan.contains("testSource2"));
    assertTrue(plan.contains("testMap"));
    assertTrue(plan.contains("testMap"));
    assertTrue(plan.contains("testCoFlatMap"));
    assertTrue(plan.contains("testWindowFold"));
  }
示例#5
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  @Test
  public void sinkKeyTest() {
    StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

    DataStreamSink<Long> sink = env.generateSequence(1, 100).print();
    assertTrue(
        env.getStreamGraph().getStreamNode(sink.getTransformation().getId()).getStatePartitioner()
            == null);
    assertTrue(
        env.getStreamGraph()
                .getStreamNode(sink.getTransformation().getId())
                .getInEdges()
                .get(0)
                .getPartitioner()
            instanceof ForwardPartitioner);

    KeySelector<Long, Long> key1 =
        new KeySelector<Long, Long>() {

          private static final long serialVersionUID = 1L;

          @Override
          public Long getKey(Long value) throws Exception {
            return (long) 0;
          }
        };

    DataStreamSink<Long> sink2 = env.generateSequence(1, 100).keyBy(key1).print();

    assertTrue(
        env.getStreamGraph().getStreamNode(sink2.getTransformation().getId()).getStatePartitioner()
            != null);
    assertEquals(
        key1,
        env.getStreamGraph()
            .getStreamNode(sink2.getTransformation().getId())
            .getStatePartitioner());
    assertTrue(
        env.getStreamGraph()
                .getStreamNode(sink2.getTransformation().getId())
                .getInEdges()
                .get(0)
                .getPartitioner()
            instanceof HashPartitioner);

    KeySelector<Long, Long> key2 =
        new KeySelector<Long, Long>() {

          private static final long serialVersionUID = 1L;

          @Override
          public Long getKey(Long value) throws Exception {
            return (long) 0;
          }
        };

    DataStreamSink<Long> sink3 = env.generateSequence(1, 100).keyBy(key2).print();

    assertTrue(
        env.getStreamGraph().getStreamNode(sink3.getTransformation().getId()).getStatePartitioner()
            != null);
    assertEquals(
        key2,
        env.getStreamGraph()
            .getStreamNode(sink3.getTransformation().getId())
            .getStatePartitioner());
    assertTrue(
        env.getStreamGraph()
                .getStreamNode(sink3.getTransformation().getId())
                .getInEdges()
                .get(0)
                .getPartitioner()
            instanceof HashPartitioner);
  }
示例#6
0
  @Test
  public void operatorTest() {
    StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

    DataStreamSource<Long> src = env.generateSequence(0, 0);

    MapFunction<Long, Integer> mapFunction =
        new MapFunction<Long, Integer>() {
          @Override
          public Integer map(Long value) throws Exception {
            return null;
          }
        };
    DataStream<Integer> map = src.map(mapFunction);
    map.addSink(new NoOpSink<Integer>());
    assertEquals(mapFunction, getFunctionForDataStream(map));

    FlatMapFunction<Long, Integer> flatMapFunction =
        new FlatMapFunction<Long, Integer>() {
          private static final long serialVersionUID = 1L;

          @Override
          public void flatMap(Long value, Collector<Integer> out) throws Exception {}
        };
    DataStream<Integer> flatMap = src.flatMap(flatMapFunction);
    flatMap.addSink(new NoOpSink<Integer>());
    assertEquals(flatMapFunction, getFunctionForDataStream(flatMap));

    FilterFunction<Integer> filterFunction =
        new FilterFunction<Integer>() {
          @Override
          public boolean filter(Integer value) throws Exception {
            return false;
          }
        };

    DataStream<Integer> unionFilter = map.union(flatMap).filter(filterFunction);

    unionFilter.addSink(new NoOpSink<Integer>());

    assertEquals(filterFunction, getFunctionForDataStream(unionFilter));

    try {
      env.getStreamGraph().getStreamEdge(map.getId(), unionFilter.getId());
    } catch (RuntimeException e) {
      fail(e.getMessage());
    }

    try {
      env.getStreamGraph().getStreamEdge(flatMap.getId(), unionFilter.getId());
    } catch (RuntimeException e) {
      fail(e.getMessage());
    }

    OutputSelector<Integer> outputSelector =
        new OutputSelector<Integer>() {
          @Override
          public Iterable<String> select(Integer value) {
            return null;
          }
        };

    SplitStream<Integer> split = unionFilter.split(outputSelector);
    split.select("dummy").addSink(new NoOpSink<Integer>());
    List<OutputSelector<?>> outputSelectors =
        env.getStreamGraph().getStreamNode(unionFilter.getId()).getOutputSelectors();
    assertEquals(1, outputSelectors.size());
    assertEquals(outputSelector, outputSelectors.get(0));

    DataStream<Integer> select = split.select("a");
    DataStreamSink<Integer> sink = select.print();

    StreamEdge splitEdge =
        env.getStreamGraph().getStreamEdge(unionFilter.getId(), sink.getTransformation().getId());
    assertEquals("a", splitEdge.getSelectedNames().get(0));

    ConnectedStreams<Integer, Integer> connect = map.connect(flatMap);
    CoMapFunction<Integer, Integer, String> coMapper =
        new CoMapFunction<Integer, Integer, String>() {
          private static final long serialVersionUID = 1L;

          @Override
          public String map1(Integer value) {
            return null;
          }

          @Override
          public String map2(Integer value) {
            return null;
          }
        };
    DataStream<String> coMap = connect.map(coMapper);
    coMap.addSink(new NoOpSink<String>());
    assertEquals(coMapper, getFunctionForDataStream(coMap));

    try {
      env.getStreamGraph().getStreamEdge(map.getId(), coMap.getId());
    } catch (RuntimeException e) {
      fail(e.getMessage());
    }

    try {
      env.getStreamGraph().getStreamEdge(flatMap.getId(), coMap.getId());
    } catch (RuntimeException e) {
      fail(e.getMessage());
    }
  }
示例#7
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  /** Tests whether parallelism gets set. */
  @Test
  public void testParallelism() {
    StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

    DataStreamSource<Tuple2<Long, Long>> src = env.fromElements(new Tuple2<>(0L, 0L));
    env.setParallelism(10);

    SingleOutputStreamOperator<Long, ?> map =
        src.map(
                new MapFunction<Tuple2<Long, Long>, Long>() {
                  @Override
                  public Long map(Tuple2<Long, Long> value) throws Exception {
                    return null;
                  }
                })
            .name("MyMap");

    DataStream<Long> windowed =
        map.windowAll(GlobalWindows.create())
            .trigger(PurgingTrigger.of(CountTrigger.of(10)))
            .fold(
                0L,
                new FoldFunction<Long, Long>() {
                  @Override
                  public Long fold(Long accumulator, Long value) throws Exception {
                    return null;
                  }
                });

    windowed.addSink(new NoOpSink<Long>());

    DataStreamSink<Long> sink =
        map.addSink(
            new SinkFunction<Long>() {
              private static final long serialVersionUID = 1L;

              @Override
              public void invoke(Long value) throws Exception {}
            });

    assertEquals(1, env.getStreamGraph().getStreamNode(src.getId()).getParallelism());
    assertEquals(10, env.getStreamGraph().getStreamNode(map.getId()).getParallelism());
    assertEquals(1, env.getStreamGraph().getStreamNode(windowed.getId()).getParallelism());
    assertEquals(
        10, env.getStreamGraph().getStreamNode(sink.getTransformation().getId()).getParallelism());

    env.setParallelism(7);

    // Some parts, such as windowing rely on the fact that previous operators have a parallelism
    // set when instantiating the Discretizer. This would break if we dynamically changed
    // the parallelism of operations when changing the setting on the Execution Environment.
    assertEquals(1, env.getStreamGraph().getStreamNode(src.getId()).getParallelism());
    assertEquals(10, env.getStreamGraph().getStreamNode(map.getId()).getParallelism());
    assertEquals(1, env.getStreamGraph().getStreamNode(windowed.getId()).getParallelism());
    assertEquals(
        10, env.getStreamGraph().getStreamNode(sink.getTransformation().getId()).getParallelism());

    try {
      src.setParallelism(3);
      fail();
    } catch (IllegalArgumentException success) {
      // do nothing
    }

    DataStreamSource<Long> parallelSource = env.generateSequence(0, 0);
    parallelSource.addSink(new NoOpSink<Long>());
    assertEquals(7, env.getStreamGraph().getStreamNode(parallelSource.getId()).getParallelism());

    parallelSource.setParallelism(3);
    assertEquals(3, env.getStreamGraph().getStreamNode(parallelSource.getId()).getParallelism());

    map.setParallelism(2);
    assertEquals(2, env.getStreamGraph().getStreamNode(map.getId()).getParallelism());

    sink.setParallelism(4);
    assertEquals(
        4, env.getStreamGraph().getStreamNode(sink.getTransformation().getId()).getParallelism());
  }
示例#8
0
  /**
   * Tests union functionality. This ensures that self-unions and unions of streams with differing
   * parallelism work.
   *
   * @throws Exception
   */
  @Test
  public void testUnion() throws Exception {
    StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
    env.setParallelism(4);

    DataStream<Long> input1 =
        env.generateSequence(0, 0)
            .map(
                new MapFunction<Long, Long>() {
                  @Override
                  public Long map(Long value) throws Exception {
                    return null;
                  }
                });

    DataStream<Long> selfUnion =
        input1
            .union(input1)
            .map(
                new MapFunction<Long, Long>() {
                  @Override
                  public Long map(Long value) throws Exception {
                    return null;
                  }
                });

    DataStream<Long> input6 =
        env.generateSequence(0, 0)
            .map(
                new MapFunction<Long, Long>() {
                  @Override
                  public Long map(Long value) throws Exception {
                    return null;
                  }
                });

    DataStream<Long> selfUnionDifferentPartition =
        input6
            .broadcast()
            .union(input6)
            .map(
                new MapFunction<Long, Long>() {
                  @Override
                  public Long map(Long value) throws Exception {
                    return null;
                  }
                });

    DataStream<Long> input2 =
        env.generateSequence(0, 0)
            .map(
                new MapFunction<Long, Long>() {
                  @Override
                  public Long map(Long value) throws Exception {
                    return null;
                  }
                })
            .setParallelism(4);

    DataStream<Long> input3 =
        env.generateSequence(0, 0)
            .map(
                new MapFunction<Long, Long>() {
                  @Override
                  public Long map(Long value) throws Exception {
                    return null;
                  }
                })
            .setParallelism(2);

    DataStream<Long> unionDifferingParallelism =
        input2
            .union(input3)
            .map(
                new MapFunction<Long, Long>() {
                  @Override
                  public Long map(Long value) throws Exception {
                    return null;
                  }
                })
            .setParallelism(4);

    DataStream<Long> input4 =
        env.generateSequence(0, 0)
            .map(
                new MapFunction<Long, Long>() {
                  @Override
                  public Long map(Long value) throws Exception {
                    return null;
                  }
                })
            .setParallelism(2);

    DataStream<Long> input5 =
        env.generateSequence(0, 0)
            .map(
                new MapFunction<Long, Long>() {
                  @Override
                  public Long map(Long value) throws Exception {
                    return null;
                  }
                })
            .setParallelism(4);

    DataStream<Long> unionDifferingPartitioning =
        input4
            .broadcast()
            .union(input5)
            .map(
                new MapFunction<Long, Long>() {
                  @Override
                  public Long map(Long value) throws Exception {
                    return null;
                  }
                })
            .setParallelism(4);

    StreamGraph streamGraph = env.getStreamGraph();

    // verify self union
    assertTrue(streamGraph.getStreamNode(selfUnion.getId()).getInEdges().size() == 2);
    for (StreamEdge edge : streamGraph.getStreamNode(selfUnion.getId()).getInEdges()) {
      assertTrue(edge.getPartitioner() instanceof ForwardPartitioner);
    }

    // verify self union with differnt partitioners
    assertTrue(
        streamGraph.getStreamNode(selfUnionDifferentPartition.getId()).getInEdges().size() == 2);
    boolean hasForward = false;
    boolean hasBroadcast = false;
    for (StreamEdge edge :
        streamGraph.getStreamNode(selfUnionDifferentPartition.getId()).getInEdges()) {
      if (edge.getPartitioner() instanceof ForwardPartitioner) {
        hasForward = true;
      }
      if (edge.getPartitioner() instanceof BroadcastPartitioner) {
        hasBroadcast = true;
      }
    }
    assertTrue(hasForward && hasBroadcast);

    // verify union of streams with differing parallelism
    assertTrue(
        streamGraph.getStreamNode(unionDifferingParallelism.getId()).getInEdges().size() == 2);
    for (StreamEdge edge :
        streamGraph.getStreamNode(unionDifferingParallelism.getId()).getInEdges()) {
      if (edge.getSourceId() == input2.getId()) {
        assertTrue(edge.getPartitioner() instanceof ForwardPartitioner);
      } else if (edge.getSourceId() == input3.getId()) {
        assertTrue(edge.getPartitioner() instanceof RebalancePartitioner);
      } else {
        fail("Wrong input edge.");
      }
    }

    // verify union of streams with differing partitionings
    assertTrue(
        streamGraph.getStreamNode(unionDifferingPartitioning.getId()).getInEdges().size() == 2);
    for (StreamEdge edge :
        streamGraph.getStreamNode(unionDifferingPartitioning.getId()).getInEdges()) {
      if (edge.getSourceId() == input4.getId()) {
        assertTrue(edge.getPartitioner() instanceof BroadcastPartitioner);
      } else if (edge.getSourceId() == input5.getId()) {
        assertTrue(edge.getPartitioner() instanceof ForwardPartitioner);
      } else {
        fail("Wrong input edge.");
      }
    }
  }