| package org.apache.helix.integration.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.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| import org.apache.helix.HelixDataAccessor; |
| import org.apache.helix.TestHelper; |
| import org.apache.helix.model.ExternalView; |
| import org.apache.helix.model.IdealState; |
| import org.apache.helix.model.MasterSlaveSMD; |
| import org.apache.helix.task.JobConfig; |
| import org.apache.helix.task.JobQueue; |
| import org.apache.helix.task.TaskDriver; |
| import org.apache.helix.task.TaskState; |
| import org.apache.helix.task.TaskUtil; |
| import org.testng.Assert; |
| import org.testng.annotations.AfterClass; |
| import org.testng.annotations.BeforeClass; |
| import org.testng.annotations.Test; |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.collect.Sets; |
| |
| /** |
| * Test to check is maximum number of attempts being respected while target partition is switching |
| * continuously. |
| */ |
| public class TestMaxNumberOfAttemptsMasterSwitch extends TaskTestBase { |
| private static final String DATABASE = WorkflowGenerator.DEFAULT_TGT_DB; |
| protected HelixDataAccessor _accessor; |
| private List<String> _assignmentList1; |
| private List<String> _assignmentList2; |
| |
| @BeforeClass |
| public void beforeClass() throws Exception { |
| _numPartitions = 1; |
| _numNodes = 3; |
| super.beforeClass(); |
| _driver = new TaskDriver(_manager); |
| |
| // Assignment1: localhost_12918: Master, localhost_12919:Slave, localhost_12920: Slave |
| _assignmentList1 = new ArrayList<>(); |
| _assignmentList1.add(PARTICIPANT_PREFIX + "_" + (_startPort + 0)); |
| _assignmentList1.add(PARTICIPANT_PREFIX + "_" + (_startPort + 1)); |
| _assignmentList1.add(PARTICIPANT_PREFIX + "_" + (_startPort + 2)); |
| |
| // Assignment2: localhost_12919: Master, localhost_12918:Slave, localhost_12920: Slave |
| _assignmentList2 = new ArrayList<>(); |
| _assignmentList2.add(PARTICIPANT_PREFIX + "_" + (_startPort + 1)); |
| _assignmentList2.add(PARTICIPANT_PREFIX + "_" + (_startPort + 0)); |
| _assignmentList2.add(PARTICIPANT_PREFIX + "_" + (_startPort + 2)); |
| } |
| |
| @AfterClass |
| public void afterClass() throws Exception { |
| super.afterClass(); |
| } |
| |
| @Test |
| public void testMaxNumberOfAttemptsMasterSwitch() throws Exception { |
| String jobQueueName = TestHelper.getTestMethodName(); |
| int maxNumberOfAttempts = 5; |
| assignCustomizedIdealState(_assignmentList1); |
| |
| JobConfig.Builder jobBuilder0 = |
| new JobConfig.Builder().setWorkflow(jobQueueName).setTargetResource(DATABASE) |
| .setTargetPartitionStates(Sets.newHashSet(MasterSlaveSMD.States.MASTER.name())) |
| .setCommand(MockTask.TASK_COMMAND).setMaxAttemptsPerTask(maxNumberOfAttempts) |
| .setJobCommandConfigMap(ImmutableMap.of(MockTask.JOB_DELAY, "100000")); |
| |
| JobQueue.Builder jobQueue = TaskTestUtil.buildJobQueue(jobQueueName); |
| jobQueue.enqueueJob("JOB0", jobBuilder0); |
| String nameSpacedJobName = TaskUtil.getNamespacedJobName(jobQueueName, "JOB0"); |
| |
| _driver.start(jobQueue.build()); |
| _driver.pollForJobState(jobQueueName, nameSpacedJobName, TaskState.IN_PROGRESS); |
| boolean isAssignmentInIdealState = true; |
| |
| // Turn on and off the instance (10 times) and make sure task gets retried and number of |
| // attempts gets incremented every time. |
| // Also make sure that the task won't be retried more than maxNumberOfAttempts |
| for (int i = 1; i <= 2 * maxNumberOfAttempts; i++) { |
| int expectedRetryNumber = Math.min(i, maxNumberOfAttempts); |
| Assert |
| .assertTrue( |
| TestHelper.verify( |
| () -> (_driver.getJobContext(nameSpacedJobName) |
| .getPartitionNumAttempts(0) == expectedRetryNumber), |
| TestHelper.WAIT_DURATION)); |
| if (isAssignmentInIdealState) { |
| assignCustomizedIdealState(_assignmentList2); |
| verifyMastership(_assignmentList2); |
| isAssignmentInIdealState = false; |
| } else { |
| assignCustomizedIdealState(_assignmentList1); |
| verifyMastership(_assignmentList1); |
| isAssignmentInIdealState = true; |
| } |
| } |
| |
| // Since the task reaches max number of attempts, ths job will fails. |
| _driver.pollForJobState(jobQueueName, nameSpacedJobName, TaskState.FAILED); |
| Assert.assertEquals(_driver.getJobContext(nameSpacedJobName).getPartitionNumAttempts(0), |
| maxNumberOfAttempts); |
| } |
| |
| private void assignCustomizedIdealState(List<String> _assignmentList) { |
| IdealState idealState = |
| _gSetupTool.getClusterManagementTool().getResourceIdealState(CLUSTER_NAME, DATABASE); |
| idealState.setPartitionState(DATABASE + "_0", _assignmentList.get(0), "MASTER"); |
| idealState.setPartitionState(DATABASE + "_0", _assignmentList.get(1), "SLAVE"); |
| idealState.setPartitionState(DATABASE + "_0", _assignmentList.get(2), "SLAVE"); |
| idealState.setRebalanceMode(IdealState.RebalanceMode.CUSTOMIZED); |
| _gSetupTool.getClusterManagementTool().setResourceIdealState(CLUSTER_NAME, DATABASE, |
| idealState); |
| } |
| |
| private void verifyMastership(List<String> _assignmentList) throws Exception { |
| String instance = _assignmentList.get(0); |
| boolean isMasterSwitchedToCorrectInstance = TestHelper.verify(() -> { |
| ExternalView externalView = |
| _gSetupTool.getClusterManagementTool().getResourceExternalView(CLUSTER_NAME, DATABASE); |
| if (externalView == null) { |
| return false; |
| } |
| Map<String, String> stateMap = externalView.getStateMap(DATABASE + "_0"); |
| if (stateMap == null) { |
| return false; |
| } |
| return "MASTER".equals(stateMap.get(instance)); |
| }, TestHelper.WAIT_DURATION); |
| Assert.assertTrue(isMasterSwitchedToCorrectInstance); |
| } |
| } |