[GitHub] [hadoop-ozone] adoroszlai commented on a change in pull request #850: HDDS-3222. Add integration test for Recon FSCK.

[GitBox <gi...@apache.org>]

adoroszlai commented on a change in pull request #850:
URL: https://github.com/apache/hadoop-ozone/pull/850#discussion_r413507894



##########
File path: hadoop-ozone/recon/src/main/java/org/apache/hadoop/ozone/recon/tasks/ReconTaskConfig.java
##########
@@ -0,0 +1,66 @@
+/*
+ * 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.hadoop.ozone.recon.tasks;
+
+import java.util.concurrent.TimeUnit;
+
+import org.apache.hadoop.hdds.conf.Config;
+import org.apache.hadoop.hdds.conf.ConfigGroup;
+import org.apache.hadoop.hdds.conf.ConfigTag;
+import org.apache.hadoop.hdds.conf.ConfigType;
+
+/**
+ * The configuration class for the Recon tasks.
+ */
+@ConfigGroup(prefix = "ozone.recon.task")
+public class ReconTaskConfig {
+
+  @Config(key = "pipelinesync.interval",
+      type = ConfigType.TIME, timeUnit = TimeUnit.SECONDS,
+      defaultValue = "600",
+      tags = { ConfigTag.RECON, ConfigTag.OZONE },
+      description = "Interval of the PipelineSyncTask in seconds."

Review comment:
       How about something like "The time interval of periodic sync of pipeline state from SCM to Recon"?  I think that's more friendly.
   
   Also, as config type is time, values can be specified with units for clarity, eg. `10m` (= `600s`), so text doesn't need to state it's "in seconds".

##########
File path: hadoop-ozone/recon/src/main/java/org/apache/hadoop/ozone/recon/scm/ReconScmTask.java
##########
@@ -34,26 +32,30 @@
   private Thread taskThread;
   private ReconTaskStatusDao reconTaskStatusDao;
   private volatile boolean running;
+  private volatile boolean registered;
 
-  @Inject
-  public ReconScmTask(ReconTaskStatusDao reconTaskStatusDao) {
+  protected ReconScmTask(ReconTaskStatusDao reconTaskStatusDao) {
     this.reconTaskStatusDao = reconTaskStatusDao;
   }
 
-  public void register() {
+  private void register() {
     String taskName = getTaskName();
     if (!reconTaskStatusDao.existsById(taskName)) {
       ReconTaskStatus reconTaskStatusRecord = new ReconTaskStatus(
           taskName, 0L, 0L);
       reconTaskStatusDao.insert(reconTaskStatusRecord);
       LOG.info("Registered {} task ", taskName);
+      registered = true;
     }

Review comment:
       If the task is persistent, restarting the task thread while keeping Recon running (which I don't know if is a possible scenario currently) will always check the DB.  If so, `registered` flag is unnecessary if DB check is cheap, otherwise it should be set outside of `if`.

##########
File path: hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/recon/TestReconTasks.java
##########
@@ -0,0 +1,125 @@
+/**
+ * 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.hadoop.ozone.recon;
+
+import static org.apache.hadoop.hdds.HddsConfigKeys.HDDS_CONTAINER_REPORT_INTERVAL;
+import static org.apache.hadoop.hdds.HddsConfigKeys.HDDS_PIPELINE_REPORT_INTERVAL;
+import static org.apache.hadoop.hdds.protocol.proto.HddsProtos.ReplicationFactor.ONE;
+import static org.apache.hadoop.hdds.protocol.proto.HddsProtos.ReplicationType.RATIS;
+import static org.apache.hadoop.ozone.container.ozoneimpl.TestOzoneContainer.runTestOzoneContainerViaDataNode;
+import static org.junit.Assert.assertEquals;
+
+import java.util.List;
+
+import org.apache.hadoop.hdds.conf.OzoneConfiguration;
+import org.apache.hadoop.hdds.scm.XceiverClientGrpc;
+import org.apache.hadoop.hdds.scm.container.ContainerInfo;
+import org.apache.hadoop.hdds.scm.container.ContainerManager;
+import org.apache.hadoop.hdds.scm.pipeline.Pipeline;
+import org.apache.hadoop.hdds.scm.pipeline.PipelineManager;
+import org.apache.hadoop.hdds.scm.server.StorageContainerManager;
+import org.apache.hadoop.ozone.MiniOzoneCluster;
+import org.apache.hadoop.ozone.recon.scm.ReconContainerManager;
+import org.apache.hadoop.ozone.recon.scm.ReconStorageContainerManagerFacade;
+import org.apache.hadoop.test.LambdaTestUtils;
+import org.hadoop.ozone.recon.schema.tables.pojos.MissingContainers;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
+
+/**
+ * Integration Tests for Recon's tasks.
+ */
+public class TestReconTasks {
+
+  private MiniOzoneCluster cluster = null;
+  private OzoneConfiguration conf;
+
+  @Rule
+  public TemporaryFolder temporaryFolder = new TemporaryFolder();
+
+  @Before
+  public void init() throws Exception {
+    conf = new OzoneConfiguration();
+    conf.set(HDDS_CONTAINER_REPORT_INTERVAL, "5s");
+    conf.set(HDDS_PIPELINE_REPORT_INTERVAL, "5s");
+    conf.set("ozone.recon.task.missingcontainer.interval", "15s");
+    conf.set("ozone.scm.stale.node.interval", "10s");
+    conf.set("ozone.scm.dead.node.interval", "20s");
+    cluster =  MiniOzoneCluster.newBuilder(conf).setNumDatanodes(1)
+        .includeRecon(true).build();
+    cluster.waitForClusterToBeReady();
+  }
+
+  @After
+  public void shutdown() {
+    if (cluster != null) {
+      cluster.shutdown();
+    }
+  }
+
+  @Test
+  public void testMissingContainerDownNode() throws Exception {
+    ReconStorageContainerManagerFacade reconScm =
+        (ReconStorageContainerManagerFacade)
+            cluster.getReconServer().getReconStorageContainerManager();
+    StorageContainerManager scm = cluster.getStorageContainerManager();
+    PipelineManager reconPipelineManager = reconScm.getPipelineManager();
+    PipelineManager scmPipelineManager = scm.getPipelineManager();
+
+    // Make sure Recon's pipeline state is initialized.
+    LambdaTestUtils.await(60000, 5000,
+        () -> (reconPipelineManager.getPipelines().size() == 1));

Review comment:
       `>= 1` may be safer (don't know if multiple pipelines are allowed for single datanode).




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