Package org.apache.tez.dag.api

Examples of org.apache.tez.dag.api.VertexManagerPluginContext

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public class TestRootInputVertexManager {

  @Test
  public void testEventsFromMultipleInputs() {

    VertexManagerPluginContext context = mock(VertexManagerPluginContext.class);
    doReturn("vertex1").when(context).getVertexName();
    doReturn(1).when(context).getVertexNumTasks(eq("vertex1"));

    RootInputVertexManager rootInputVertexManager = new RootInputVertexManager(context);
    rootInputVertexManager.initialize();
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  }

  @Test
  public void testConfigureFromMultipleInputs() {

    VertexManagerPluginContext context = mock(VertexManagerPluginContext.class);
    doReturn("vertex1").when(context).getVertexName();
    doReturn(-1).when(context).getVertexNumTasks(eq("vertex1"));

    RootInputVertexManager rootInputVertexManager = new RootInputVertexManager(context);
    rootInputVertexManager.initialize();
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    mockInputVertices.put(mockSrcVertexId1, eProp1);
    mockInputVertices.put(mockSrcVertexId2, eProp2);
    mockInputVertices.put(mockSrcVertexId3, eProp3);

    final VertexManagerPluginContext mockContext = mock(VertexManagerPluginContext.class);
    when(mockContext.getInputVertexEdgeProperties()).thenReturn(mockInputVertices);
    when(mockContext.getVertexName()).thenReturn(mockManagedVertexId);
    when(mockContext.getVertexNumTasks(mockManagedVertexId)).thenReturn(4);

    //Check via setters
    ShuffleVertexManager.ShuffleVertexManagerConfigBuilder configurer = ShuffleVertexManager
        .createConfigBuilder(null);
    VertexManagerPluginDescriptor pluginDesc = configurer.setAutoReduceParallelism(true)
        .setDesiredTaskInputSize(1000l)
        .setMinTaskParallelism(10).setSlowStartMaxSrcCompletionFraction(0.5f).build();
    when(mockContext.getUserPayload()).thenReturn(pluginDesc.getUserPayload());


    manager = ReflectionUtils.createClazzInstance(pluginDesc.getClassName(),
        new Class[]{VertexManagerPluginContext.class}, new Object[]{mockContext});
    manager.initialize();

    Assert.assertTrue(manager.enableAutoParallelism == true);
    Assert.assertTrue(manager.desiredTaskInputDataSize == 1000l);
    Assert.assertTrue(manager.minTaskParallelism == 10);
    Assert.assertTrue(manager.slowStartMinSrcCompletionFraction == 0.25f);
    Assert.assertTrue(manager.slowStartMaxSrcCompletionFraction == 0.5f);

    configurer = ShuffleVertexManager.createConfigBuilder(null);
    pluginDesc = configurer.setAutoReduceParallelism(false).build();
    when(mockContext.getUserPayload()).thenReturn(pluginDesc.getUserPayload());

    manager = ReflectionUtils.createClazzInstance(pluginDesc.getClassName(),
        new Class[]{VertexManagerPluginContext.class}, new Object[]{mockContext});
    manager.initialize();

    Assert.assertTrue(manager.enableAutoParallelism == false);
    Assert.assertTrue(manager.desiredTaskInputDataSize ==
        ShuffleVertexManager.TEZ_SHUFFLE_VERTEX_MANAGER_DESIRED_TASK_INPUT_SIZE_DEFAULT);
    Assert.assertTrue(manager.minTaskParallelism == 1);
    Assert.assertTrue(manager.slowStartMinSrcCompletionFraction ==
        ShuffleVertexManager.TEZ_SHUFFLE_VERTEX_MANAGER_MIN_SRC_FRACTION_DEFAULT);
    Assert.assertTrue(manager.slowStartMaxSrcCompletionFraction ==
        ShuffleVertexManager.TEZ_SHUFFLE_VERTEX_MANAGER_MAX_SRC_FRACTION_DEFAULT);


    // check initialization
    manager = createManager(conf, mockContext, 0.1f, 0.1f);
    Assert.assertTrue(manager.bipartiteSources.size() == 2);
    Assert.assertTrue(manager.bipartiteSources.containsKey(mockSrcVertexId1));
    Assert.assertTrue(manager.bipartiteSources.containsKey(mockSrcVertexId2));
   
    final HashSet<Integer> scheduledTasks = new HashSet<Integer>();
    doAnswer(new Answer() {
      public Object answer(InvocationOnMock invocation) {
          Object[] args = invocation.getArguments();
          scheduledTasks.clear();
          List<TaskWithLocationHint> tasks = (List<TaskWithLocationHint>)args[0];
          for (TaskWithLocationHint task : tasks) {
            scheduledTasks.add(task.getTaskIndex());
          }
          return null;
      }}).when(mockContext).scheduleVertexTasks(anyList());
   
    final Map<String, EdgeManagerPlugin> newEdgeManagers =
        new HashMap<String, EdgeManagerPlugin>();
   
    doAnswer(new Answer() {
      public Object answer(InvocationOnMock invocation) {
          when(mockContext.getVertexNumTasks(mockManagedVertexId)).thenReturn(2);
          newEdgeManagers.clear();
          for (Entry<String, EdgeManagerPluginDescriptor> entry :
              ((Map<String, EdgeManagerPluginDescriptor>)invocation.getArguments()[2]).entrySet()) {


            final UserPayload userPayload = entry.getValue().getUserPayload();
            EdgeManagerPluginContext emContext = new EdgeManagerPluginContext() {
              @Override
              public UserPayload getUserPayload() {
                return userPayload == null ? null : userPayload;
              }

              @Override
              public String getSourceVertexName() {
                return null;
              }

              @Override
              public String getDestinationVertexName() {
                return null;
              }

              @Override
              public int getSourceVertexNumTasks() {
                return 0;
              }

              @Override
              public int getDestinationVertexNumTasks() {
                return 0;
              }
            };
            EdgeManagerPlugin edgeManager = ReflectionUtils
                .createClazzInstance(entry.getValue().getClassName(),
                    new Class[]{EdgeManagerPluginContext.class}, new Object[]{emContext});
            edgeManager.initialize();
            newEdgeManagers.put(entry.getKey(), edgeManager);
          }
          return null;
      }}).when(mockContext).setVertexParallelism(eq(2), any(VertexLocationHint.class), anyMap(), anyMap());
   
    // source vertices have 0 tasks. immediate start of all managed tasks
    when(mockContext.getVertexNumTasks(mockSrcVertexId1)).thenReturn(0);
    when(mockContext.getVertexNumTasks(mockSrcVertexId2)).thenReturn(0);
    when(mockContext.getVertexNumTasks(mockSrcVertexId3)).thenReturn(1);

    manager.onVertexStarted(null);
    Assert.assertTrue(manager.pendingTasks.isEmpty());
    Assert.assertTrue(scheduledTasks.size() == 4); // all tasks scheduled
    scheduledTasks.clear();
   
    when(mockContext.getVertexNumTasks(mockSrcVertexId1)).thenReturn(2);
    when(mockContext.getVertexNumTasks(mockSrcVertexId2)).thenReturn(2);

    ByteBuffer payload =
        VertexManagerEventPayloadProto.newBuilder().setOutputSize(5000L).build().toByteString().asReadOnlyByteBuffer();
    VertexManagerEvent vmEvent = VertexManagerEvent.create("Vertex", payload);
    // parallelism not change due to large data size
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        OutputDescriptor.create("out"),
        InputDescriptor.create("in"));
   
    String mockManagedVertexId = "Vertex4";
   
    VertexManagerPluginContext mockContext = mock(VertexManagerPluginContext.class);
    when(mockContext.getInputVertexEdgeProperties()).thenReturn(mockInputVertices);
    when(mockContext.getVertexName()).thenReturn(mockManagedVertexId);
    when(mockContext.getVertexNumTasks(mockManagedVertexId)).thenReturn(3);
   
    // fail if there is no bipartite src vertex
    mockInputVertices.put(mockSrcVertexId3, eProp3);
    try {
      manager = createManager(conf, mockContext, 0.1f, 0.1f);
      Assert.assertFalse(true);
    } catch (TezUncheckedException e) {
      Assert.assertTrue(e.getMessage().contains(
          "Atleast 1 bipartite source should exist"));
    }
   
    mockInputVertices.put(mockSrcVertexId1, eProp1);
    mockInputVertices.put(mockSrcVertexId2, eProp2);
   
    // check initialization
    manager = createManager(conf, mockContext, 0.1f, 0.1f);
    Assert.assertTrue(manager.bipartiteSources.size() == 2);
    Assert.assertTrue(manager.bipartiteSources.containsKey(mockSrcVertexId1));
    Assert.assertTrue(manager.bipartiteSources.containsKey(mockSrcVertexId2));
       
    final HashSet<Integer> scheduledTasks = new HashSet<Integer>();
    doAnswer(new Answer() {
      public Object answer(InvocationOnMock invocation) {
          Object[] args = invocation.getArguments();
          scheduledTasks.clear();
          List<TaskWithLocationHint> tasks = (List<TaskWithLocationHint>)args[0];
          for (TaskWithLocationHint task : tasks) {
            scheduledTasks.add(task.getTaskIndex());
          }
          return null;
      }}).when(mockContext).scheduleVertexTasks(anyList());
   
    // source vertices have 0 tasks. immediate start of all managed tasks
    when(mockContext.getVertexNumTasks(mockSrcVertexId1)).thenReturn(0);
    when(mockContext.getVertexNumTasks(mockSrcVertexId2)).thenReturn(0);
    manager.onVertexStarted(null);
    Assert.assertTrue(manager.pendingTasks.isEmpty());
    Assert.assertTrue(scheduledTasks.size() == 3); // all tasks scheduled
   
    when(mockContext.getVertexNumTasks(mockSrcVertexId1)).thenReturn(2);
    when(mockContext.getVertexNumTasks(mockSrcVertexId2)).thenReturn(2);

    try {
      // source vertex have some tasks. min < 0.
      manager = createManager(conf, mockContext, -0.1f, 0);
      Assert.assertTrue(false); // should not come here
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        OutputDescriptor.create("out"),
        InputDescriptor.create("in"));
   
    String mockManagedVertexId = "Vertex";
   
    VertexManagerPluginContext mockContext = mock(VertexManagerPluginContext.class);
    when(mockContext.getInputVertexEdgeProperties()).thenReturn(mockInputVertices);
    when(mockContext.getVertexName()).thenReturn(mockManagedVertexId);
    when(mockContext.getVertexNumTasks(mockManagedVertexId)).thenReturn(2);
    when(mockContext.getVertexNumTasks(mockSrcVertexId1)).thenReturn(3);
    mockInputVertices.put(mockSrcVertexId1, eProp1);
   
    Map<String, List<Integer>> initialCompletions = Maps.newHashMap();
    initialCompletions.put(mockSrcVertexId1, Collections.singletonList(0));
   
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    when(mockContainer1.getId()).thenReturn(mockCId1);
    Container mockContainer2 = mock(Container.class);
    ContainerId mockCId2 = mock(ContainerId.class);
    when(mockContainer2.getId()).thenReturn(mockCId2);
   
    VertexManagerPluginContext mockContext = mock(VertexManagerPluginContext.class);
    when(mockContext.getInputVertexEdgeProperties()).thenReturn(mockInputVertices);
    when(mockContext.getVertexName()).thenReturn(mockManagedVertexId);
    when(mockContext.getVertexNumTasks(mockManagedVertexId)).thenReturn(3);
    when(mockContext.getVertexNumTasks(mockSrcVertexId1)).thenReturn(3);
    when(mockContext.getTaskContainer(mockSrcVertexId1, 0)).thenReturn(mockContainer1);
    when(mockContext.getTaskContainer(mockSrcVertexId1, 1)).thenReturn(mockContainer2);
    when(mockContext.getTaskContainer(mockSrcVertexId1, 2)).thenReturn(mockContainer1);
    mockInputVertices.put(mockSrcVertexId1, eProp1);
   
    Map<String, List<Integer>> initialCompletions = Maps.newHashMap();
    initialCompletions.put(mockSrcVertexId1, Collections.singletonList(0));
   
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    when(mockContainer2.getId()).thenReturn(mockCId2);
    Container mockContainer3 = mock(Container.class);
    ContainerId mockCId3 = mock(ContainerId.class);
    when(mockContainer3.getId()).thenReturn(mockCId3);
   
    VertexManagerPluginContext mockContext = mock(VertexManagerPluginContext.class);
    when(mockContext.getInputVertexEdgeProperties()).thenReturn(mockInputVertices);
    when(mockContext.getVertexName()).thenReturn(mockManagedVertexId);
    when(mockContext.getVertexNumTasks(mockSrcVertexId1)).thenReturn(3);
    when(mockContext.getVertexNumTasks(mockSrcVertexId2)).thenReturn(3);
    when(mockContext.getVertexNumTasks(mockSrcVertexId3)).thenReturn(3);
    when(mockContext.getTaskContainer(mockSrcVertexId2, 0)).thenReturn(mockContainer2);
    when(mockContext.getTaskContainer(mockSrcVertexId2, 1)).thenReturn(mockContainer2);
    when(mockContext.getTaskContainer(mockSrcVertexId2, 2)).thenReturn(mockContainer2);
    when(mockContext.getTaskContainer(mockSrcVertexId3, 0)).thenReturn(mockContainer3);
    when(mockContext.getTaskContainer(mockSrcVertexId3, 1)).thenReturn(mockContainer3);
    when(mockContext.getTaskContainer(mockSrcVertexId3, 2)).thenReturn(mockContainer3);
    mockInputVertices.put(mockSrcVertexId1, eProp1);
    mockInputVertices.put(mockSrcVertexId2, eProp2);
    mockInputVertices.put(mockSrcVertexId3, eProp3);
   
    Map<String, List<Integer>> initialCompletions = Maps.newHashMap();
   
    // 1-1 sources do not match managed tasks
    when(mockContext.getVertexNumTasks(mockManagedVertexId)).thenReturn(4);
    InputReadyVertexManager manager = new InputReadyVertexManager(mockContext);
    manager.initialize();
    try {
      manager.onVertexStarted(initialCompletions);
      Assert.assertTrue("Should have exception", false);
    } catch (TezUncheckedException e) {
      e.getMessage().contains("Managed task number must equal 1-1 source");
    }
   
    // 1-1 sources do not match
    when(mockContext.getVertexNumTasks(mockManagedVertexId)).thenReturn(3);
    when(mockContext.getVertexNumTasks(mockSrcVertexId3)).thenReturn(4);
    manager = new InputReadyVertexManager(mockContext);
    manager.initialize();
    try {
      manager.onVertexStarted(initialCompletions);
      Assert.assertTrue("Should have exception", false);
    } catch (TezUncheckedException e) {
      e.getMessage().contains("1-1 source vertices must have identical concurrency");
    }
   
    initialCompletions.put(mockSrcVertexId1, Collections.singletonList(0));
    initialCompletions.put(mockSrcVertexId2, Collections.singletonList(0));
    when(mockContext.getVertexNumTasks(mockSrcVertexId3)).thenReturn(3);
    manager = new InputReadyVertexManager(mockContext);
    manager.initialize();
    manager.onVertexStarted(initialCompletions);
    // all 1-1 0's done but not scheduled because v1 is not done
    manager.onSourceTaskCompleted(mockSrcVertexId3, 0);
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    mockInputVertices.put(mockSrcVertexId1, eProp1);
    mockInputVertices.put(mockSrcVertexId2, eProp2);
    mockInputVertices.put(mockSrcVertexId3, eProp3);

    final VertexManagerPluginContext mockContext = mock(VertexManagerPluginContext.class);
    when(mockContext.getInputVertexEdgeProperties()).thenReturn(mockInputVertices);
    when(mockContext.getVertexName()).thenReturn(mockManagedVertexId);
    when(mockContext.getVertexNumTasks(mockManagedVertexId)).thenReturn(4);
   
    // check initialization
    manager = createManager(conf, mockContext, 0.1f, 0.1f);
    Assert.assertTrue(manager.bipartiteSources.size() == 2);
    Assert.assertTrue(manager.bipartiteSources.containsKey(mockSrcVertexId1));
    Assert.assertTrue(manager.bipartiteSources.containsKey(mockSrcVertexId2));
   
    final HashSet<Integer> scheduledTasks = new HashSet<Integer>();
    doAnswer(new Answer() {
      public Object answer(InvocationOnMock invocation) {
          Object[] args = invocation.getArguments();
          scheduledTasks.clear();
          scheduledTasks.addAll((List<Integer>)args[0]);
          return null;
      }}).when(mockContext).scheduleVertexTasks(anyList());
   
    final Map<String, EdgeManager> newEdgeManagers =
        new HashMap<String, EdgeManager>();
   
    doAnswer(new Answer() {
      public Object answer(InvocationOnMock invocation) {
          when(mockContext.getVertexNumTasks(mockManagedVertexId)).thenReturn(2);
          newEdgeManagers.clear();
          for (Entry<String, EdgeManagerDescriptor> entry :
              ((Map<String, EdgeManagerDescriptor>)invocation.getArguments()[2]).entrySet()) {
            EdgeManager edgeManager = RuntimeUtils.createClazzInstance(
                entry.getValue().getClassName());
            final byte[] userPayload = entry.getValue().getUserPayload();
            edgeManager.initialize(new EdgeManagerContext() {
              @Override
              public byte[] getUserPayload() {
                return userPayload;
              }

              @Override
              public String getSrcVertexName() {
                return null;
              }

              @Override
              public String getDestVertexName() {
                return null;
              }
            });
            newEdgeManagers.put(entry.getKey(), edgeManager);
          }
          return null;
      }}).when(mockContext).setVertexParallelism(eq(2), any(VertexLocationHint.class), anyMap());
   
    // source vertices have 0 tasks. immediate start of all managed tasks
    when(mockContext.getVertexNumTasks(mockSrcVertexId1)).thenReturn(0);
    when(mockContext.getVertexNumTasks(mockSrcVertexId2)).thenReturn(0);
    when(mockContext.getVertexNumTasks(mockSrcVertexId3)).thenReturn(1);

    manager.onVertexStarted(null);
    Assert.assertTrue(manager.pendingTasks.isEmpty());
    Assert.assertTrue(scheduledTasks.size() == 4); // all tasks scheduled
    scheduledTasks.clear();
   
    when(mockContext.getVertexNumTasks(mockSrcVertexId1)).thenReturn(2);
    when(mockContext.getVertexNumTasks(mockSrcVertexId2)).thenReturn(2);

    byte[] payload =
        VertexManagerEventPayloadProto.newBuilder().setOutputSize(5000L).build().toByteArray();
    VertexManagerEvent vmEvent = new VertexManagerEvent("Vertex", payload);
    // parallelism not change due to large data size
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        new OutputDescriptor("out"),
        new InputDescriptor("in"));
   
    String mockManagedVertexId = "Vertex4";
   
    VertexManagerPluginContext mockContext = mock(VertexManagerPluginContext.class);
    when(mockContext.getInputVertexEdgeProperties()).thenReturn(mockInputVertices);
    when(mockContext.getVertexName()).thenReturn(mockManagedVertexId);
    when(mockContext.getVertexNumTasks(mockManagedVertexId)).thenReturn(3);
   
    // fail if there is no bipartite src vertex
    mockInputVertices.put(mockSrcVertexId3, eProp3);
    try {
      manager = createManager(conf, mockContext, 0.1f, 0.1f);
      Assert.assertFalse(true);
    } catch (TezUncheckedException e) {
      Assert.assertTrue(e.getMessage().contains(
          "Atleast 1 bipartite source should exist"));
    }
   
    mockInputVertices.put(mockSrcVertexId1, eProp1);
    mockInputVertices.put(mockSrcVertexId2, eProp2);
   
    // check initialization
    manager = createManager(conf, mockContext, 0.1f, 0.1f);
    Assert.assertTrue(manager.bipartiteSources.size() == 2);
    Assert.assertTrue(manager.bipartiteSources.containsKey(mockSrcVertexId1));
    Assert.assertTrue(manager.bipartiteSources.containsKey(mockSrcVertexId2));
       
    final HashSet<Integer> scheduledTasks = new HashSet<Integer>();
    doAnswer(new Answer() {
      public Object answer(InvocationOnMock invocation) {
          Object[] args = invocation.getArguments();
          scheduledTasks.clear();
          scheduledTasks.addAll((List<Integer>)args[0]);
          return null;
      }}).when(mockContext).scheduleVertexTasks(anyList());
   
    // source vertices have 0 tasks. immediate start of all managed tasks
    when(mockContext.getVertexNumTasks(mockSrcVertexId1)).thenReturn(0);
    when(mockContext.getVertexNumTasks(mockSrcVertexId2)).thenReturn(0);
    manager.onVertexStarted(null);
    Assert.assertTrue(manager.pendingTasks.isEmpty());
    Assert.assertTrue(scheduledTasks.size() == 3); // all tasks scheduled
   
    when(mockContext.getVertexNumTasks(mockSrcVertexId1)).thenReturn(2);
    when(mockContext.getVertexNumTasks(mockSrcVertexId2)).thenReturn(2);

    try {
      // source vertex have some tasks. min < 0.
      manager = createManager(conf, mockContext, -0.1f, 0);
      Assert.assertTrue(false); // should not come here
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    mockInputVertices.put(mockSrcVertexId1, eProp1);
    mockInputVertices.put(mockSrcVertexId2, eProp2);
    mockInputVertices.put(mockSrcVertexId3, eProp3);

    final VertexManagerPluginContext mockContext = mock(VertexManagerPluginContext.class);
    when(mockContext.getInputVertexEdgeProperties()).thenReturn(mockInputVertices);
    when(mockContext.getVertexName()).thenReturn(mockManagedVertexId);
    when(mockContext.getVertexNumTasks(mockManagedVertexId)).thenReturn(4);
   
    // check initialization
    manager = createManager(conf, mockContext, 0.1f, 0.1f);
    Assert.assertTrue(manager.bipartiteSources.size() == 2);
    Assert.assertTrue(manager.bipartiteSources.containsKey(mockSrcVertexId1));
    Assert.assertTrue(manager.bipartiteSources.containsKey(mockSrcVertexId2));
   
    final HashSet<Integer> scheduledTasks = new HashSet<Integer>();
    doAnswer(new Answer() {
      public Object answer(InvocationOnMock invocation) {
          Object[] args = invocation.getArguments();
          scheduledTasks.clear();
          scheduledTasks.addAll((List<Integer>)args[0]);
          return null;
      }}).when(mockContext).scheduleVertexTasks(anyList());
   
    final Map<String, EdgeManager> newEdgeManagers =
        new HashMap<String, EdgeManager>();
   
    doAnswer(new Answer() {
      public Object answer(InvocationOnMock invocation) {
          when(mockContext.getVertexNumTasks(mockManagedVertexId)).thenReturn(2);
          newEdgeManagers.clear();
          for (Entry<String, EdgeManagerDescriptor> entry :
              ((Map<String, EdgeManagerDescriptor>)invocation.getArguments()[2]).entrySet()) {
            EdgeManager edgeManager = RuntimeUtils.createClazzInstance(
                entry.getValue().getClassName());
            final byte[] userPayload = entry.getValue().getUserPayload();
            edgeManager.initialize(new EdgeManagerContext() {
              @Override
              public byte[] getUserPayload() {
                return userPayload;
              }

              @Override
              public String getSrcVertexName() {
                return null;
              }

              @Override
              public String getDestVertexName() {
                return null;
              }
            });
            newEdgeManagers.put(entry.getKey(), edgeManager);
          }
          return null;
      }}).when(mockContext).setVertexParallelism(eq(2), any(VertexLocationHint.class), anyMap());
   
    // source vertices have 0 tasks. immediate start of all managed tasks
    when(mockContext.getVertexNumTasks(mockSrcVertexId1)).thenReturn(0);
    when(mockContext.getVertexNumTasks(mockSrcVertexId2)).thenReturn(0);
    when(mockContext.getVertexNumTasks(mockSrcVertexId3)).thenReturn(1);

    manager.onVertexStarted(null);
    Assert.assertTrue(manager.pendingTasks.isEmpty());
    Assert.assertTrue(scheduledTasks.size() == 4); // all tasks scheduled
    scheduledTasks.clear();
   
    when(mockContext.getVertexNumTasks(mockSrcVertexId1)).thenReturn(2);
    when(mockContext.getVertexNumTasks(mockSrcVertexId2)).thenReturn(2);

    byte[] payload =
        VertexManagerEventPayloadProto.newBuilder().setOutputSize(5000L).build().toByteArray();
    VertexManagerEvent vmEvent = new VertexManagerEvent("Vertex", payload);
    // parallelism not change due to large data size
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Related Classes of org.apache.tez.dag.api.VertexManagerPluginContext

  • org.apache.tez.dag.app.dag.impl.TestRootInputVertexManager
  • org.apache.tez.dag.library.vertexmanager.TestInputReadyVertexManager
  • org.apache.tez.dag.library.vertexmanager.TestShuffleVertexManager
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