[
https://issues.apache.org/jira/browse/FLINK-8360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16348505#comment-16348505
]
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_r165341653
--- 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);
--- End diff --
This assertion seems to be redundant.
> 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.
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