helix-core/src/test/java/org/apache/helix/integration/task/TestDropCurrentStateRunningTask.java - helix - Git at Google

 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.HashMap;
 import java.util.Map;

 import org.apache.helix.AccessOption;
 import org.apache.helix.TestHelper;
 import org.apache.helix.ZkTestHelper;
 import org.apache.helix.integration.manager.MockParticipantManager;
 import org.apache.helix.model.CurrentState;
 import org.apache.helix.task.JobConfig;
 import org.apache.helix.task.JobQueue;
 import org.apache.helix.task.TaskPartitionState;
 import org.apache.helix.task.TaskState;
 import org.apache.helix.task.TaskUtil;
 import org.apache.helix.task.Workflow;
 import org.apache.helix.zookeeper.datamodel.ZNRecord;
 import org.apache.helix.zookeeper.impl.client.ZkClient;
 import org.apache.zookeeper.data.Stat;
 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;

 public class TestDropCurrentStateRunningTask extends TaskTestBase {

   @BeforeClass
   public void beforeClass() throws Exception {
     _numNodes = 3;
     _numPartitions = 1;
     super.beforeClass();

     // Stop participants that have been started in super class
     for (int i = 0; i < _numNodes; i++) {
       super.stopParticipant(i);
       Assert.assertFalse(_participants[i].isConnected());
     }
     _participants = new MockParticipantManager[_numNodes];
     startParticipant(2);
   }

   @AfterClass
   public void afterClass() throws Exception {
     super.afterClass();
   }

   @Test
   public void testDropCurrentStateRunningTask() throws Exception {
     String workflowName = TestHelper.getTestMethodName();
     String jobName = "JOB0";
     JobConfig.Builder jobBuilder1 = new JobConfig.Builder().setWorkflow(workflowName)
         .setNumberOfTasks(1).setNumConcurrentTasksPerInstance(100).setCommand(MockTask.TASK_COMMAND)
         .setJobCommandConfigMap(ImmutableMap.of(MockTask.JOB_DELAY, "99999999"));

     Workflow.Builder workflowBuilder1 =
         new Workflow.Builder(workflowName).addJob(jobName, jobBuilder1);

     _driver.start(workflowBuilder1.build());

     _driver.pollForJobState(workflowName, TaskUtil.getNamespacedJobName(workflowName, jobName),
         TaskState.IN_PROGRESS);

     String namespacedJobName = TaskUtil.getNamespacedJobName(workflowName, jobName);
     // Task should be assigned to the only available instance which is participant2
     Assert.assertTrue(TestHelper.verify(
         () -> (TaskPartitionState.RUNNING
             .equals(_driver.getJobContext(namespacedJobName).getPartitionState(0))
             && (PARTICIPANT_PREFIX + "_" + (_startPort + 2))
                 .equals(_driver.getJobContext(namespacedJobName).getAssignedParticipant(0))),
         TestHelper.WAIT_DURATION));

     // Now start two other participants
     startParticipant(0);
     startParticipant(1);

     // Get current state of participant 2 and make sure it is created
     String instanceP2 = PARTICIPANT_PREFIX + "_" + (_startPort + 2);
     ZkClient clientP2 = (ZkClient) _participants[2].getZkClient();
     String sessionIdP2 = ZkTestHelper.getSessionId(clientP2);
     String currentStatePathP2 = "/" + CLUSTER_NAME + "/INSTANCES/" + instanceP2 + "/CURRENTSTATES/"
         + sessionIdP2 + "/" + namespacedJobName;

     Assert
         .assertTrue(
             TestHelper
                 .verify(
                     () -> (_manager.getHelixDataAccessor().getBaseDataAccessor()
                         .get(currentStatePathP2, new Stat(), AccessOption.PERSISTENT) != null),
                     TestHelper.WAIT_DURATION));

     // Set the current state of participant0 and participant1 with requested state equals DROPPED
     String instanceP0 = PARTICIPANT_PREFIX + "_" + (_startPort + 0);
     ZkClient clientP0 = (ZkClient) _participants[0].getZkClient();
     String sessionIdP0 = ZkTestHelper.getSessionId(clientP0);
     String currentStatePathP0 = "/" + CLUSTER_NAME + "/INSTANCES/" + instanceP0 + "/CURRENTSTATES/"
         + sessionIdP0 + "/" + namespacedJobName;

     String instanceP1 = PARTICIPANT_PREFIX + "_" + (_startPort + 1);
     ZkClient clientP1 = (ZkClient) _participants[1].getZkClient();
     String sessionIdP1 = ZkTestHelper.getSessionId(clientP1);
     String currentStatePathP1 = "/" + CLUSTER_NAME + "/INSTANCES/" + instanceP1 + "/CURRENTSTATES/"
         + sessionIdP1 + "/" + namespacedJobName;

     ZNRecord record = _manager.getHelixDataAccessor().getBaseDataAccessor().get(currentStatePathP2,
         new Stat(), AccessOption.PERSISTENT);
     String partitionName = namespacedJobName + "_0";
     Map<String, String> newCurrentState = new HashMap<>();
     newCurrentState.put(CurrentState.CurrentStateProperty.CURRENT_STATE.name(),
         TaskPartitionState.RUNNING.name());
     newCurrentState.put(CurrentState.CurrentStateProperty.REQUESTED_STATE.name(),
         TaskPartitionState.DROPPED.name());
     record.setSimpleField(CurrentState.CurrentStateProperty.SESSION_ID.name(), sessionIdP0);
     record.setMapField(partitionName, newCurrentState);
     _manager.getHelixDataAccessor().getBaseDataAccessor().set(currentStatePathP0, record,
         AccessOption.PERSISTENT);
     record.setSimpleField(CurrentState.CurrentStateProperty.SESSION_ID.name(), sessionIdP1);
     _manager.getHelixDataAccessor().getBaseDataAccessor().set(currentStatePathP1, record,
         AccessOption.PERSISTENT);

     // Make sure that the current states on participant0 and participant1 have been deleted
     Assert
         .assertTrue(
             TestHelper
                 .verify(
                     () -> (_manager.getHelixDataAccessor().getBaseDataAccessor()
                         .get(currentStatePathP0, new Stat(), AccessOption.PERSISTENT) == null
                         && _manager.getHelixDataAccessor().getBaseDataAccessor()
                             .get(currentStatePathP1, new Stat(), AccessOption.PERSISTENT) == null),
                     TestHelper.WAIT_DURATION));

     _driver.stop(workflowName);
   }

   @Test(dependsOnMethods = "testDropCurrentStateRunningTask")
   public void testJobCurrentStateDroppedAfterCompletion() throws Exception {
     // Stop participants that have been started in previous test and start one of them
     for (int i = 0; i < _numNodes; i++) {
       super.stopParticipant(i);
       Assert.assertFalse(_participants[i].isConnected());
     }
     _participants = new MockParticipantManager[_numNodes];
     startParticipant(0);

     String jobQueueName = TestHelper.getTestMethodName();

     JobConfig.Builder jobBuilderCompleted =
         JobConfig.Builder.fromMap(WorkflowGenerator.DEFAULT_JOB_CONFIG).setMaxAttemptsPerTask(1)
             .setWorkflow(jobQueueName)
             .setJobCommandConfigMap(ImmutableMap.of(MockTask.JOB_DELAY, "10"));

     // Task gets timed out in 10 seconds because the the default value is 10 seconds in
     // DEFAULT_JOB_CONFIG
     JobConfig.Builder jobBuilderTimedOut =
         JobConfig.Builder.fromMap(WorkflowGenerator.DEFAULT_JOB_CONFIG).setMaxAttemptsPerTask(1)
             .setWorkflow(jobQueueName)
             .setJobCommandConfigMap(ImmutableMap.of(MockTask.JOB_DELAY, "100000"));

     JobQueue.Builder jobQueue = TaskTestUtil.buildJobQueue(jobQueueName, 0, 100);

     for (int i = 0; i < 20; i++) {
       jobQueue.enqueueJob("job" + i, jobBuilderCompleted);
     }

     jobQueue.enqueueJob("job" + 20, jobBuilderTimedOut);

     _driver.start(jobQueue.build());

     for (int i = 0; i < 20; i++) {
       _driver.pollForJobState(jobQueueName, TaskUtil.getNamespacedJobName(jobQueueName, "job" + i),
           TaskState.COMPLETED);
     }
     _driver.pollForJobState(jobQueueName, TaskUtil.getNamespacedJobName(jobQueueName, "job" + 20),
         TaskState.FAILED);

     String instanceP0 = PARTICIPANT_PREFIX + "_" + (_startPort + 0);
     ZkClient clientP0 = (ZkClient) _participants[0].getZkClient();
     String sessionIdP0 = ZkTestHelper.getSessionId(clientP0);

     for (int i = 0; i < 21; i++) {
       String currentStatePathP0 =
           "/" + CLUSTER_NAME + "/INSTANCES/" + instanceP0 + "/CURRENTSTATES/" + sessionIdP0 + "/"
               + TaskUtil.getNamespacedJobName(jobQueueName, "job" + i);
       boolean isCurrentStateRemoved = TestHelper.verify(() -> {
         ZNRecord record = _manager.getHelixDataAccessor().getBaseDataAccessor()
             .get(currentStatePathP0, new Stat(), AccessOption.PERSISTENT);
         return record == null;
       }, TestHelper.WAIT_DURATION);
       Assert.assertTrue(isCurrentStateRemoved);
     }
   }
 }
	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.HashMap;
	import java.util.Map;

	import org.apache.helix.AccessOption;
	import org.apache.helix.TestHelper;
	import org.apache.helix.ZkTestHelper;
	import org.apache.helix.integration.manager.MockParticipantManager;
	import org.apache.helix.model.CurrentState;
	import org.apache.helix.task.JobConfig;
	import org.apache.helix.task.JobQueue;
	import org.apache.helix.task.TaskPartitionState;
	import org.apache.helix.task.TaskState;
	import org.apache.helix.task.TaskUtil;
	import org.apache.helix.task.Workflow;
	import org.apache.helix.zookeeper.datamodel.ZNRecord;
	import org.apache.helix.zookeeper.impl.client.ZkClient;
	import org.apache.zookeeper.data.Stat;
	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;

	public class TestDropCurrentStateRunningTask extends TaskTestBase {

	@BeforeClass
	public void beforeClass() throws Exception {
	_numNodes = 3;
	_numPartitions = 1;
	super.beforeClass();

	// Stop participants that have been started in super class
	for (int i = 0; i < _numNodes; i++) {
	super.stopParticipant(i);
	Assert.assertFalse(_participants[i].isConnected());
	}
	_participants = new MockParticipantManager[_numNodes];
	startParticipant(2);
	}

	@AfterClass
	public void afterClass() throws Exception {
	super.afterClass();
	}

	@Test
	public void testDropCurrentStateRunningTask() throws Exception {
	String workflowName = TestHelper.getTestMethodName();
	String jobName = "JOB0";
	JobConfig.Builder jobBuilder1 = new JobConfig.Builder().setWorkflow(workflowName)
	.setNumberOfTasks(1).setNumConcurrentTasksPerInstance(100).setCommand(MockTask.TASK_COMMAND)
	.setJobCommandConfigMap(ImmutableMap.of(MockTask.JOB_DELAY, "99999999"));

	Workflow.Builder workflowBuilder1 =
	new Workflow.Builder(workflowName).addJob(jobName, jobBuilder1);

	_driver.start(workflowBuilder1.build());

	_driver.pollForJobState(workflowName, TaskUtil.getNamespacedJobName(workflowName, jobName),
	TaskState.IN_PROGRESS);

	String namespacedJobName = TaskUtil.getNamespacedJobName(workflowName, jobName);
	// Task should be assigned to the only available instance which is participant2
	Assert.assertTrue(TestHelper.verify(
	() -> (TaskPartitionState.RUNNING
	.equals(_driver.getJobContext(namespacedJobName).getPartitionState(0))
	&& (PARTICIPANT_PREFIX + "_" + (_startPort + 2))
	.equals(_driver.getJobContext(namespacedJobName).getAssignedParticipant(0))),
	TestHelper.WAIT_DURATION));

	// Now start two other participants
	startParticipant(0);
	startParticipant(1);

	// Get current state of participant 2 and make sure it is created
	String instanceP2 = PARTICIPANT_PREFIX + "_" + (_startPort + 2);
	ZkClient clientP2 = (ZkClient) _participants[2].getZkClient();
	String sessionIdP2 = ZkTestHelper.getSessionId(clientP2);
	String currentStatePathP2 = "/" + CLUSTER_NAME + "/INSTANCES/" + instanceP2 + "/CURRENTSTATES/"
	+ sessionIdP2 + "/" + namespacedJobName;

	Assert
	.assertTrue(
	TestHelper
	.verify(
	() -> (_manager.getHelixDataAccessor().getBaseDataAccessor()
	.get(currentStatePathP2, new Stat(), AccessOption.PERSISTENT) != null),
	TestHelper.WAIT_DURATION));

	// Set the current state of participant0 and participant1 with requested state equals DROPPED
	String instanceP0 = PARTICIPANT_PREFIX + "_" + (_startPort + 0);
	ZkClient clientP0 = (ZkClient) _participants[0].getZkClient();
	String sessionIdP0 = ZkTestHelper.getSessionId(clientP0);
	String currentStatePathP0 = "/" + CLUSTER_NAME + "/INSTANCES/" + instanceP0 + "/CURRENTSTATES/"
	+ sessionIdP0 + "/" + namespacedJobName;

	String instanceP1 = PARTICIPANT_PREFIX + "_" + (_startPort + 1);
	ZkClient clientP1 = (ZkClient) _participants[1].getZkClient();
	String sessionIdP1 = ZkTestHelper.getSessionId(clientP1);
	String currentStatePathP1 = "/" + CLUSTER_NAME + "/INSTANCES/" + instanceP1 + "/CURRENTSTATES/"
	+ sessionIdP1 + "/" + namespacedJobName;

	ZNRecord record = _manager.getHelixDataAccessor().getBaseDataAccessor().get(currentStatePathP2,
	new Stat(), AccessOption.PERSISTENT);
	String partitionName = namespacedJobName + "_0";
	Map<String, String> newCurrentState = new HashMap<>();
	newCurrentState.put(CurrentState.CurrentStateProperty.CURRENT_STATE.name(),
	TaskPartitionState.RUNNING.name());
	newCurrentState.put(CurrentState.CurrentStateProperty.REQUESTED_STATE.name(),
	TaskPartitionState.DROPPED.name());
	record.setSimpleField(CurrentState.CurrentStateProperty.SESSION_ID.name(), sessionIdP0);
	record.setMapField(partitionName, newCurrentState);
	_manager.getHelixDataAccessor().getBaseDataAccessor().set(currentStatePathP0, record,
	AccessOption.PERSISTENT);
	record.setSimpleField(CurrentState.CurrentStateProperty.SESSION_ID.name(), sessionIdP1);
	_manager.getHelixDataAccessor().getBaseDataAccessor().set(currentStatePathP1, record,
	AccessOption.PERSISTENT);

	// Make sure that the current states on participant0 and participant1 have been deleted
	Assert
	.assertTrue(
	TestHelper
	.verify(
	() -> (_manager.getHelixDataAccessor().getBaseDataAccessor()
	.get(currentStatePathP0, new Stat(), AccessOption.PERSISTENT) == null
	&& _manager.getHelixDataAccessor().getBaseDataAccessor()
	.get(currentStatePathP1, new Stat(), AccessOption.PERSISTENT) == null),
	TestHelper.WAIT_DURATION));

	_driver.stop(workflowName);
	}

	@Test(dependsOnMethods = "testDropCurrentStateRunningTask")
	public void testJobCurrentStateDroppedAfterCompletion() throws Exception {
	// Stop participants that have been started in previous test and start one of them
	for (int i = 0; i < _numNodes; i++) {
	super.stopParticipant(i);
	Assert.assertFalse(_participants[i].isConnected());
	}
	_participants = new MockParticipantManager[_numNodes];
	startParticipant(0);

	String jobQueueName = TestHelper.getTestMethodName();

	JobConfig.Builder jobBuilderCompleted =
	JobConfig.Builder.fromMap(WorkflowGenerator.DEFAULT_JOB_CONFIG).setMaxAttemptsPerTask(1)
	.setWorkflow(jobQueueName)
	.setJobCommandConfigMap(ImmutableMap.of(MockTask.JOB_DELAY, "10"));

	// Task gets timed out in 10 seconds because the the default value is 10 seconds in
	// DEFAULT_JOB_CONFIG
	JobConfig.Builder jobBuilderTimedOut =
	JobConfig.Builder.fromMap(WorkflowGenerator.DEFAULT_JOB_CONFIG).setMaxAttemptsPerTask(1)
	.setWorkflow(jobQueueName)
	.setJobCommandConfigMap(ImmutableMap.of(MockTask.JOB_DELAY, "100000"));

	JobQueue.Builder jobQueue = TaskTestUtil.buildJobQueue(jobQueueName, 0, 100);

	for (int i = 0; i < 20; i++) {
	jobQueue.enqueueJob("job" + i, jobBuilderCompleted);
	}

	jobQueue.enqueueJob("job" + 20, jobBuilderTimedOut);

	_driver.start(jobQueue.build());

	for (int i = 0; i < 20; i++) {
	_driver.pollForJobState(jobQueueName, TaskUtil.getNamespacedJobName(jobQueueName, "job" + i),
	TaskState.COMPLETED);
	}
	_driver.pollForJobState(jobQueueName, TaskUtil.getNamespacedJobName(jobQueueName, "job" + 20),
	TaskState.FAILED);

	String instanceP0 = PARTICIPANT_PREFIX + "_" + (_startPort + 0);
	ZkClient clientP0 = (ZkClient) _participants[0].getZkClient();
	String sessionIdP0 = ZkTestHelper.getSessionId(clientP0);

	for (int i = 0; i < 21; i++) {
	String currentStatePathP0 =
	"/" + CLUSTER_NAME + "/INSTANCES/" + instanceP0 + "/CURRENTSTATES/" + sessionIdP0 + "/"
	+ TaskUtil.getNamespacedJobName(jobQueueName, "job" + i);
	boolean isCurrentStateRemoved = TestHelper.verify(() -> {
	ZNRecord record = _manager.getHelixDataAccessor().getBaseDataAccessor()
	.get(currentStatePathP0, new Stat(), AccessOption.PERSISTENT);
	return record == null;
	}, TestHelper.WAIT_DURATION);
	Assert.assertTrue(isCurrentStateRemoved);
	}
	}
	}