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ASF GitHub Bot commented on FLINK-8360: --------------------------------------- Github user tillrohrmann commented on a diff in the pull request: https://github.com/apache/flink/pull/5239#discussion_r165341901 --- Diff: flink-runtime/src/test/java/org/apache/flink/runtime/state/TaskExecutorLocalStateStoresManagerTest.java --- @@ -0,0 +1,122 @@ +/* + * 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.flink.runtime.state; + +import org.apache.flink.api.common.JobID; +import org.apache.flink.configuration.ConfigConstants; +import org.apache.flink.configuration.Configuration; +import org.apache.flink.runtime.clusterframework.types.ResourceID; +import org.apache.flink.runtime.jobgraph.JobVertexID; +import org.apache.flink.runtime.taskexecutor.TaskManagerServices; +import org.apache.flink.runtime.taskexecutor.TaskManagerServicesConfiguration; + +import org.junit.Assert; +import org.junit.Test; +import org.junit.rules.TemporaryFolder; + +import java.io.File; +import java.net.InetAddress; + +public class TaskExecutorLocalStateStoresManagerTest { + + /** + * This tests that the creation of {@link TaskManagerServices} correctly creates the local state root directory + * for the {@link TaskExecutorLocalStateStoresManager} with the configured root directory. + */ + @Test + public void testCreationFromConfig() throws Exception { + + final Configuration config = new Configuration(); + + final String rootDirString = "localStateRoot"; + config.setString(ConfigConstants.TASK_MANAGER_LOCAL_STATE_ROOT_DIR_KEY, rootDirString); + + final ResourceID tmResourceID = ResourceID.generate(); + + TaskManagerServicesConfiguration taskManagerServicesConfiguration = + TaskManagerServicesConfiguration.fromConfiguration(config, InetAddress.getLocalHost(), true); + + TaskManagerServices taskManagerServices = + TaskManagerServices.fromConfiguration(taskManagerServicesConfiguration, tmResourceID); + + TaskExecutorLocalStateStoresManager taskStateManager = taskManagerServices.getTaskStateManager(); + + Assert.assertEquals( + new File(rootDirString, TaskManagerServices.LOCAL_STATE_SUB_DIRECTORY_ROOT), + taskStateManager.getLocalStateRootDirectory()); + + Assert.assertEquals("localState", TaskManagerServices.LOCAL_STATE_SUB_DIRECTORY_ROOT); + } + + /** + * This tests that the creation of {@link TaskManagerServices} correctly falls back to the first tmp directory of + * the IOManager as default for the local state root directory. + */ + @Test + public void testCreationFromConfigDefault() throws Exception { + + final Configuration config = new Configuration(); + + final ResourceID tmResourceID = ResourceID.generate(); + + TaskManagerServicesConfiguration taskManagerServicesConfiguration = + TaskManagerServicesConfiguration.fromConfiguration(config, InetAddress.getLocalHost(), true); + + TaskManagerServices taskManagerServices = + TaskManagerServices.fromConfiguration(taskManagerServicesConfiguration, tmResourceID); + + TaskExecutorLocalStateStoresManager taskStateManager = taskManagerServices.getTaskStateManager(); + + Assert.assertEquals( + new File(taskManagerServicesConfiguration.getTmpDirPaths()[0], TaskManagerServices.LOCAL_STATE_SUB_DIRECTORY_ROOT), + taskStateManager.getLocalStateRootDirectory()); + } + + /** + * This tests that the {@link TaskExecutorLocalStateStoresManager} creates {@link TaskLocalStateStore} that have + * a properly initialized local state base directory. + */ + @Test + public void testSubtaskStateStoreDirectoryCreation() throws Exception { + + JobID jobID = new JobID(); + JobVertexID jobVertexID = new JobVertexID(); + int subtaskIdx = 42; + TemporaryFolder tmp = new TemporaryFolder(); --- End diff -- Why not making it a `ClassRule`? > Implement task-local state recovery > ----------------------------------- > > Key: FLINK-8360 > URL: https://issues.apache.org/jira/browse/FLINK-8360 > Project: Flink > Issue Type: New Feature > Components: State Backends, Checkpointing > Reporter: Stefan Richter > Assignee: Stefan Richter > Priority: Major > Fix For: 1.5.0 > > > This issue tracks the development of recovery from task-local state. The main > idea is to have a secondary, local copy of the checkpointed state, while > there is still a primary copy in DFS that we report to the checkpoint > coordinator. > Recovery can attempt to restore from the secondary local copy, if available, > to save network bandwidth. This requires that the assignment from tasks to > slots is as sticky is possible. > For starters, we will implement this feature for all managed keyed states and > can easily enhance it to all other state types (e.g. operator state) later. -- This message was sent by Atlassian JIRA (v7.6.3#76005)