| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.tez.dag.app.dag.impl; |
| |
| import org.apache.hadoop.yarn.event.EventHandler; |
| import org.apache.tez.dag.app.dag.DAG; |
| import org.apache.tez.dag.app.dag.DAGScheduler; |
| import org.apache.tez.dag.app.dag.TaskAttempt; |
| import org.apache.tez.dag.app.dag.Vertex; |
| import org.apache.tez.dag.app.dag.event.DAGEventSchedulerUpdate; |
| import org.apache.tez.dag.app.dag.event.TaskAttemptEventSchedule; |
| import org.apache.tez.dag.records.TezTaskAttemptID; |
| import org.apache.tez.dag.records.TezTaskID; |
| import org.apache.tez.dag.records.TezVertexID; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import com.google.common.collect.Lists; |
| |
| import static org.mockito.Mockito.*; |
| |
| import java.util.List; |
| |
| public class TestDAGScheduler { |
| |
| class MockEventHandler implements EventHandler<TaskAttemptEventSchedule> { |
| TaskAttemptEventSchedule event; |
| List<TaskAttemptEventSchedule> events = Lists.newLinkedList(); |
| @Override |
| public void handle(TaskAttemptEventSchedule event) { |
| this.event = event; |
| this.events.add(event); |
| } |
| } |
| |
| |
| @Test(timeout=5000) |
| public void testDAGSchedulerNaturalOrder() { |
| MockEventHandler mockEventHandler = new MockEventHandler(); |
| DAG mockDag = mock(DAG.class); |
| Vertex mockVertex = mock(Vertex.class); |
| TaskAttempt mockAttempt = mock(TaskAttempt.class); |
| when(mockDag.getVertex((TezVertexID) any())).thenReturn(mockVertex); |
| when(mockDag.getTotalVertices()).thenReturn(4); |
| when(mockVertex.getDistanceFromRoot()).thenReturn(0).thenReturn(1) |
| .thenReturn(2); |
| TezVertexID vId0 = TezVertexID.fromString("vertex_1436907267600_195589_1_00"); |
| TezVertexID vId1 = TezVertexID.fromString("vertex_1436907267600_195589_1_01"); |
| TezVertexID vId2 = TezVertexID.fromString("vertex_1436907267600_195589_1_02"); |
| TezVertexID vId3 = TezVertexID.fromString("vertex_1436907267600_195589_1_03"); |
| when(mockVertex.getVertexId()).thenReturn(vId0).thenReturn(vId1) |
| .thenReturn(vId2).thenReturn(vId3); |
| |
| DAGEventSchedulerUpdate event = new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_SCHEDULE, mockAttempt); |
| |
| DAGScheduler scheduler = new DAGSchedulerNaturalOrder(mockDag, |
| mockEventHandler); |
| scheduler.scheduleTaskEx(event); |
| Assert.assertEquals(10, mockEventHandler.event.getPriorityHighLimit()); |
| Assert.assertEquals(12, mockEventHandler.event.getPriorityLowLimit()); |
| scheduler.scheduleTaskEx(event); |
| Assert.assertEquals(25, mockEventHandler.event.getPriorityHighLimit()); |
| Assert.assertEquals(27, mockEventHandler.event.getPriorityLowLimit()); |
| scheduler.scheduleTaskEx(event); |
| Assert.assertEquals(40, mockEventHandler.event.getPriorityHighLimit()); |
| Assert.assertEquals(42, mockEventHandler.event.getPriorityLowLimit()); |
| scheduler.scheduleTaskEx(event); |
| Assert.assertEquals(43, mockEventHandler.event.getPriorityHighLimit()); |
| Assert.assertEquals(45, mockEventHandler.event.getPriorityLowLimit()); |
| } |
| |
| @Test(timeout=5000) |
| public void testConcurrencyLimit() { |
| MockEventHandler mockEventHandler = new MockEventHandler(); |
| DAG mockDag = mock(DAG.class); |
| when(mockDag.getTotalVertices()).thenReturn(2); |
| TezVertexID vId0 = TezVertexID.fromString("vertex_1436907267600_195589_1_00"); |
| TezVertexID vId1 = TezVertexID.fromString("vertex_1436907267600_195589_1_01"); |
| TezTaskID tId0 = TezTaskID.getInstance(vId0, 0); |
| TezTaskID tId1 = TezTaskID.getInstance(vId1, 0); |
| |
| TaskAttempt mockAttempt; |
| |
| Vertex mockVertex = mock(Vertex.class); |
| when(mockDag.getVertex((TezVertexID) any())).thenReturn(mockVertex); |
| when(mockVertex.getDistanceFromRoot()).thenReturn(0); |
| when(mockVertex.getVertexId()).thenReturn(vId0); |
| |
| DAGScheduler scheduler = new DAGSchedulerNaturalOrder(mockDag, |
| mockEventHandler); |
| scheduler.addVertexConcurrencyLimit(vId0, 0); // not effective |
| |
| // schedule beyond limit and it gets scheduled |
| mockAttempt = mock(TaskAttempt.class); |
| when(mockAttempt.getID()).thenReturn(TezTaskAttemptID.getInstance(tId0, 0)); |
| scheduler.scheduleTask(new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_SCHEDULE, mockAttempt)); |
| Assert.assertEquals(1, mockEventHandler.events.size()); |
| mockAttempt = mock(TaskAttempt.class); |
| when(mockAttempt.getID()).thenReturn(TezTaskAttemptID.getInstance(tId0, 1)); |
| scheduler.scheduleTask(new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_SCHEDULE, mockAttempt)); |
| Assert.assertEquals(2, mockEventHandler.events.size()); |
| mockAttempt = mock(TaskAttempt.class); |
| when(mockAttempt.getID()).thenReturn(TezTaskAttemptID.getInstance(tId0, 2)); |
| scheduler.scheduleTask(new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_SCHEDULE, mockAttempt)); |
| Assert.assertEquals(3, mockEventHandler.events.size()); |
| |
| mockEventHandler.events.clear(); |
| List<TaskAttempt> mockAttempts = Lists.newArrayList(); |
| int completed = 0; |
| int requested = 0; |
| int scheduled = 0; |
| scheduler.addVertexConcurrencyLimit(vId1, 2); // effective |
| |
| // schedule beyond limit and it gets buffered |
| mockAttempt = mock(TaskAttempt.class); |
| mockAttempts.add(mockAttempt); |
| when(mockAttempt.getID()).thenReturn(TezTaskAttemptID.getInstance(tId1, requested++)); |
| scheduler.scheduleTask(new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_SCHEDULE, mockAttempt)); |
| Assert.assertEquals(scheduled+1, mockEventHandler.events.size()); // scheduled |
| Assert.assertEquals(mockAttempts.get(scheduled).getID(), |
| mockEventHandler.events.get(scheduled).getTaskAttemptID()); // matches order |
| scheduled++; |
| |
| mockAttempt = mock(TaskAttempt.class); |
| mockAttempts.add(mockAttempt); |
| when(mockAttempt.getID()).thenReturn(TezTaskAttemptID.getInstance(tId1, requested++)); |
| scheduler.scheduleTask(new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_SCHEDULE, mockAttempt)); |
| Assert.assertEquals(scheduled+1, mockEventHandler.events.size()); // scheduled |
| Assert.assertEquals(mockAttempts.get(scheduled).getID(), |
| mockEventHandler.events.get(scheduled).getTaskAttemptID()); // matches order |
| scheduled++; |
| |
| mockAttempt = mock(TaskAttempt.class); |
| mockAttempts.add(mockAttempt); |
| when(mockAttempt.getID()).thenReturn(TezTaskAttemptID.getInstance(tId1, requested++)); |
| scheduler.scheduleTask(new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_SCHEDULE, mockAttempt)); |
| Assert.assertEquals(scheduled, mockEventHandler.events.size()); // buffered |
| |
| mockAttempt = mock(TaskAttempt.class); |
| mockAttempts.add(mockAttempt); |
| when(mockAttempt.getID()).thenReturn(TezTaskAttemptID.getInstance(tId1, requested++)); |
| scheduler.scheduleTask(new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_SCHEDULE, mockAttempt)); |
| Assert.assertEquals(scheduled, mockEventHandler.events.size()); // buffered |
| |
| scheduler.taskCompleted(new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_COMPLETED, mockAttempts.get(completed++))); |
| Assert.assertEquals(scheduled+1, mockEventHandler.events.size()); // scheduled |
| Assert.assertEquals(mockAttempts.get(scheduled).getID(), |
| mockEventHandler.events.get(scheduled).getTaskAttemptID()); // matches order |
| scheduled++; |
| |
| scheduler.taskCompleted(new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_COMPLETED, mockAttempts.get(completed++))); |
| Assert.assertEquals(scheduled+1, mockEventHandler.events.size()); // scheduled |
| Assert.assertEquals(mockAttempts.get(scheduled).getID(), |
| mockEventHandler.events.get(scheduled).getTaskAttemptID()); // matches order |
| scheduled++; |
| |
| scheduler.taskCompleted(new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_COMPLETED, mockAttempts.get(completed++))); |
| Assert.assertEquals(scheduled, mockEventHandler.events.size()); // no extra scheduling |
| |
| mockAttempt = mock(TaskAttempt.class); |
| mockAttempts.add(mockAttempt); |
| when(mockAttempt.getID()).thenReturn(TezTaskAttemptID.getInstance(tId1, requested++)); |
| scheduler.scheduleTask(new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_SCHEDULE, mockAttempt)); |
| Assert.assertEquals(scheduled+1, mockEventHandler.events.size()); // scheduled |
| Assert.assertEquals(mockAttempts.get(scheduled).getID(), |
| mockEventHandler.events.get(scheduled).getTaskAttemptID()); // matches order |
| scheduled++; |
| |
| } |
| |
| @Test(timeout=5000) |
| public void testConcurrencyLimitWithKilledNonRunningTask() { |
| MockEventHandler mockEventHandler = new MockEventHandler(); |
| DAG mockDag = mock(DAG.class); |
| when(mockDag.getTotalVertices()).thenReturn(2); |
| TezVertexID vId0 = TezVertexID.fromString("vertex_1436907267600_195589_1_00"); |
| TezTaskID tId0 = TezTaskID.getInstance(vId0, 0); |
| |
| TaskAttempt mockAttempt; |
| |
| Vertex mockVertex = mock(Vertex.class); |
| when(mockDag.getVertex((TezVertexID) any())).thenReturn(mockVertex); |
| when(mockVertex.getDistanceFromRoot()).thenReturn(0); |
| when(mockVertex.getVertexId()).thenReturn(vId0); |
| |
| DAGScheduler scheduler = new DAGSchedulerNaturalOrder(mockDag, |
| mockEventHandler); |
| |
| List<TaskAttempt> mockAttempts = Lists.newArrayList(); |
| int completed = 0; |
| int requested = 0; |
| int scheduled = 0; |
| scheduler.addVertexConcurrencyLimit(vId0, 1); // effective |
| |
| // schedule beyond limit and it gets buffered |
| mockAttempt = mock(TaskAttempt.class); |
| mockAttempts.add(mockAttempt); |
| when(mockAttempt.getID()).thenReturn(TezTaskAttemptID.getInstance(tId0, requested++)); |
| scheduler.scheduleTask(new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_SCHEDULE, mockAttempt)); |
| Assert.assertEquals(scheduled+1, mockEventHandler.events.size()); // scheduled |
| Assert.assertEquals(mockAttempts.get(scheduled).getID(), |
| mockEventHandler.events.get(scheduled).getTaskAttemptID()); // matches order |
| scheduled++; |
| |
| mockAttempt = mock(TaskAttempt.class); |
| mockAttempts.add(mockAttempt); |
| when(mockAttempt.getID()).thenReturn(TezTaskAttemptID.getInstance(tId0, requested++)); |
| scheduler.scheduleTask(new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_SCHEDULE, mockAttempt)); |
| Assert.assertEquals(scheduled, mockEventHandler.events.size()); // buffered |
| |
| mockAttempt = mock(TaskAttempt.class); |
| mockAttempts.add(mockAttempt); |
| when(mockAttempt.getID()).thenReturn(TezTaskAttemptID.getInstance(tId0, requested++)); |
| scheduler.scheduleTask(new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_SCHEDULE, mockAttempt)); |
| Assert.assertEquals(scheduled, mockEventHandler.events.size()); // buffered |
| |
| scheduler.taskCompleted(new DAGEventSchedulerUpdate( |
| DAGEventSchedulerUpdate.UpdateType.TA_COMPLETED, mockAttempts.get(1))); |
| Assert.assertEquals(scheduled, mockEventHandler.events.size()); // buffered |
| Assert.assertEquals(mockAttempts.get(0).getID(), |
| mockEventHandler.events.get(0).getTaskAttemptID()); // matches order |
| } |
| |
| } |