| package org.apache.helix.task; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Random; |
| import java.util.Set; |
| |
| import org.apache.helix.controller.stages.CurrentStateOutput; |
| import org.apache.helix.model.Partition; |
| import org.apache.helix.model.ResourceAssignment; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.when; |
| |
| public class TestDropTerminalTasksUponReset { |
| |
| /** |
| * This is a unit test that tests that all task partitions with requested state = DROPPED will be |
| * added to tasksToDrop. |
| */ |
| @Test |
| public void testDropAllTerminalTasksUponReset() { |
| Random random = new Random(); |
| String jobName = "job"; |
| String nodeName = "localhost"; |
| int numTasks = 10; |
| |
| // Create an Iterable of LiveInstances |
| Collection<String> liveInstances = new HashSet<>(); |
| liveInstances.add("localhost"); |
| |
| // Create a dummy ResourceAssignment |
| ResourceAssignment prevAssignment = new ResourceAssignment(jobName); |
| |
| // Create allTaskPartitions |
| Set<Integer> allTaskPartitions = new HashSet<>(); |
| |
| // Create a mock CurrentStateOutput |
| CurrentStateOutput currentStateOutput = mock(CurrentStateOutput.class); |
| |
| // Generate a CurrentStateMap |
| Map<Partition, Map<String, String>> currentStateMap = new HashMap<>(); |
| when(currentStateOutput.getCurrentStateMap(jobName)).thenReturn(currentStateMap); |
| |
| for (int i = 0; i < numTasks; i++) { |
| allTaskPartitions.add(i); |
| Partition task = new Partition(jobName + "_" + i); |
| currentStateMap.put(task, new HashMap<>()); |
| |
| // Pick some random currentState between COMPLETED and TASK_ERROR |
| String currentState = (random.nextBoolean()) ? TaskPartitionState.COMPLETED.name() |
| : TaskPartitionState.TASK_ERROR.name(); |
| |
| // First half of the tasks to be dropped on each instance |
| if (i < numTasks / 2) { |
| // requested state is DROPPED |
| currentStateMap.get(task).put("localhost", currentState); |
| when(currentStateOutput.getRequestedState(jobName, task, nodeName)) |
| .thenReturn(TaskPartitionState.DROPPED.name()); |
| } else { |
| // requested state is nothing |
| when(currentStateOutput.getRequestedState(jobName, task, nodeName)).thenReturn(null); |
| } |
| } |
| |
| // Create an empty tasksToDrop |
| Map<String, Set<Integer>> tasksToDrop = new HashMap<>(); |
| |
| // Call the static method we are testing |
| JobDispatcher.getCurrentInstanceToTaskAssignments(liveInstances, currentStateOutput, jobName, tasksToDrop); |
| |
| // Check that tasksToDrop has (numTasks / 2) partitions as we intended regardless of what the |
| // current states of the tasks were |
| Assert.assertEquals(numTasks / 2, tasksToDrop.get(nodeName).size()); |
| } |
| } |