HDFS-11186. [SPS]: Daemon thread of SPS should start only in Active NN. Contributed by Wei Zhou

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java

@@ -440,9 +440,15 @@ public class BlockManager implements BlockStatsMXBean {
   /** Storages accessible from multiple DNs. */
   private final ProvidedStorageMap providedStorageMap;
 
+  /**
+   * Whether HA is enabled.
+   */
+  private final boolean haEnabled;
+
   public BlockManager(final Namesystem namesystem, boolean haEnabled,
       final Configuration conf) throws IOException {
     this.namesystem = namesystem;
+    this.haEnabled = haEnabled;
     datanodeManager = new DatanodeManager(this, namesystem, conf);
     heartbeatManager = datanodeManager.getHeartbeatManager();
     this.blockIdManager = new BlockIdManager(this);
@@ -713,7 +719,7 @@ public class BlockManager implements BlockStatsMXBean {
     this.blockReportThread.start();
     mxBeanName = MBeans.register("NameNode", "BlockStats", this);
     bmSafeMode.activate(blockTotal);
-    if (sps != null) {
+    if (sps != null && !haEnabled) {
       sps.start();
     }
   }
@@ -5046,6 +5052,7 @@ public class BlockManager implements BlockStatsMXBean {
       LOG.info("Storage policy satisfier is already running.");
       return;
     }
+
     sps.start();
   }
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/mover/Mover.java

@@ -48,6 +48,7 @@ import org.apache.hadoop.hdfs.server.protocol.DatanodeStorageReport;
 import org.apache.hadoop.hdfs.server.protocol.StorageReport;
 import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.hdfs.protocol.ErasureCodingPolicy;
+import org.apache.hadoop.ipc.RemoteException;
 import org.apache.hadoop.ipc.StandbyException;
 import org.apache.hadoop.net.NetUtils;
 import org.apache.hadoop.net.NetworkTopology;
@@ -661,9 +662,13 @@ public class Mover {
           try {
             spsRunning = nnc.getDistributedFileSystem().getClient()
                 .isStoragePolicySatisfierRunning();
-          } catch (StandbyException e) {
-            System.err.println("Skip Standby Namenode. " + nnc.toString());
-            continue;
+          } catch (RemoteException e) {
+            IOException cause = e.unwrapRemoteException();
+            if (cause instanceof StandbyException) {
+              System.err.println("Skip Standby Namenode. " + nnc.toString());
+              continue;
+            }
+            throw e;
           }
           if (spsRunning) {
             System.err.println("Mover failed due to StoragePolicySatisfier"

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java

@@ -1290,6 +1290,8 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
         FSDirEncryptionZoneOp.warmUpEdekCache(edekCacheLoader, dir,
             edekCacheLoaderDelay, edekCacheLoaderInterval);
       }
+
+      blockManager.activateSPS();
     } finally {
       startingActiveService = false;
       blockManager.checkSafeMode();
@@ -1319,6 +1321,10 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
     LOG.info("Stopping services started for active state");
     writeLock();
     try {
+      if (blockManager != null) {
+        blockManager.deactivateSPS();
+      }
+
       stopSecretManager();
       leaseManager.stopMonitor();
       if (nnrmthread != null) {

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java

@@ -2137,6 +2137,13 @@ public class NameNode extends ReconfigurableBase implements
                   + "we must pass true/false only"));
     }
 
+    if (!isActiveState()) {
+      throw new ReconfigurationException(property, newVal,
+          getConf().get(property), new HadoopIllegalArgumentException(
+          "Activating or deactivating storage policy satisfier service on "
+              + state + " NameNode is not allowed"));
+    }
+
     boolean activateSPS = Boolean.parseBoolean(newVal);
     if (activateSPS) {
       namesystem.getBlockManager().activateSPS();

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestStoragePolicySatisfierWithHA.java

@@ -0,0 +1,109 @@
+/**
+ * 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.hadoop.hdfs.server.namenode;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.conf.ReconfigurationException;
+import org.apache.hadoop.hdfs.DFSConfigKeys;
+import org.apache.hadoop.hdfs.DistributedFileSystem;
+import org.apache.hadoop.hdfs.MiniDFSCluster;
+import org.apache.hadoop.hdfs.MiniDFSNNTopology;
+import org.apache.hadoop.ipc.RemoteException;
+import org.apache.hadoop.ipc.StandbyException;
+import org.apache.hadoop.test.GenericTestUtils;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.io.IOException;
+
+/**
+ * Tests that StoragePolicySatisfier is able to work with HA enabled.
+ */
+public class TestStoragePolicySatisfierWithHA {
+  private MiniDFSCluster cluster = null;
+
+  @Before
+  public void setUp() throws IOException {
+    Configuration conf = new Configuration();
+    cluster = new MiniDFSCluster.Builder(conf)
+        .nnTopology(MiniDFSNNTopology.simpleHATopology())
+        .numDataNodes(1)
+        .build();
+  }
+
+  /**
+   * Tests to verify that SPS should run/stop automatically when NN state
+   * changes between Standby and Active.
+   */
+  @Test(timeout = 100000)
+  public void testWhenNNHAStateChanges() throws IOException {
+    try {
+      DistributedFileSystem fs;
+      boolean running;
+
+      cluster.waitActive();
+      fs = cluster.getFileSystem(0);
+
+      try {
+        fs.getClient().isStoragePolicySatisfierRunning();
+        Assert.fail("Call this function to Standby NN should "
+            + "raise an exception.");
+      } catch (RemoteException e) {
+        IOException cause = e.unwrapRemoteException();
+        if (!(cause instanceof StandbyException)) {
+          Assert.fail("Unexpected exception happened " + e);
+        }
+      }
+
+      cluster.transitionToActive(0);
+      running = fs.getClient().isStoragePolicySatisfierRunning();
+      Assert.assertTrue("StoragePolicySatisfier should be active "
+          + "when NN transits from Standby to Active mode.", running);
+
+      // NN transits from Active to Standby
+      cluster.transitionToStandby(0);
+      try {
+        fs.getClient().isStoragePolicySatisfierRunning();
+        Assert.fail("NN in Standby again, call this function should "
+            + "raise an exception.");
+      } catch (RemoteException e) {
+        IOException cause = e.unwrapRemoteException();
+        if (!(cause instanceof StandbyException)) {
+          Assert.fail("Unexpected exception happened " + e);
+        }
+      }
+
+      try {
+        cluster.getNameNode(0).reconfigurePropertyImpl(
+            DFSConfigKeys.DFS_STORAGE_POLICY_SATISFIER_ACTIVATE_KEY, "false");
+        Assert.fail("It's not allowed to activate or deactivate"
+            + " StoragePolicySatisfier on Standby NameNode");
+      } catch (ReconfigurationException e) {
+        GenericTestUtils.assertExceptionContains("Could not change property "
+            + DFSConfigKeys.DFS_STORAGE_POLICY_SATISFIER_ACTIVATE_KEY
+            + " from 'true' to 'false'", e);
+        GenericTestUtils.assertExceptionContains(
+            "Activating or deactivating storage policy satisfier service on "
+                + "standby NameNode is not allowed", e.getCause());
+      }
+    } finally {
+      cluster.shutdown();
+    }
+  }
+}