HDFS-16978. RBF: Admin command to support bulk add of mount points (#5554). Contributed by Viraj Jasani.

Reviewed-by: Inigo Goiri <inigoiri@apache.org>
Reviewed-by: Simbarashe Dzinamarira <sdzinamarira@linkedin.com>
Signed-off-by: Ayush Saxena <ayushsaxena@apache.org>

hadoop-hdfs-project/hadoop-hdfs-rbf/dev-support/findbugsExcludeFile.xml

@@ -19,4 +19,16 @@
   <Match>
     <Package name="org.apache.hadoop.hdfs.federation.protocol.proto" />
   </Match>
+  <!-- Only to be used by Router Admin while preparing for bulk add request -->
+  <Match>
+    <Class name="org.apache.hadoop.hdfs.tools.federation.AddMountAttributes" />
+    <Method name="getNss" />
+    <Bug pattern="EI_EXPOSE_REP" />
+  </Match>
+  <!-- Only to be used by Router Admin while preparing for bulk add request -->
+  <Match>
+    <Class name="org.apache.hadoop.hdfs.tools.federation.AddMountAttributes" />
+    <Method name="setNss" />
+    <Bug pattern="EI_EXPOSE_REP2" />
+  </Match>
 </FindBugsFilter>

hadoop-hdfs-project/hadoop-hdfs-rbf/pom.xml

@@ -301,6 +301,11 @@ https://maven.apache.org/xsd/maven-4.0.0.xsd">
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-javadoc-plugin</artifactId>
+        <configuration>
+          <excludePackageNames>
+            org.apache.hadoop.hdfs.federation.protocol.proto:org.apache.hadoop.hdfs.protocol.proto
+          </excludePackageNames>
+        </configuration>
       </plugin>
       <plugin>
         <groupId>org.apache.rat</groupId>

hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/protocolPB/RouterAdminProtocolServerSideTranslatorPB.java

@@ -21,6 +21,8 @@ import java.io.IOException;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
+import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.AddMountTableEntriesRequestProto;
+import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.AddMountTableEntriesResponseProto;
 import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.AddMountTableEntryRequestProto;
 import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.AddMountTableEntryResponseProto;
 import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.DisableNameserviceRequestProto;
@@ -48,6 +50,8 @@ import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProt
 import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.RefreshSuperUserGroupsConfigurationRequestProto;
 import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.RefreshSuperUserGroupsConfigurationResponseProto;
 import org.apache.hadoop.hdfs.server.federation.router.RouterAdminServer;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntriesRequest;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntriesResponse;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntryRequest;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntryResponse;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.DisableNameserviceRequest;
@@ -73,6 +77,8 @@ import org.apache.hadoop.hdfs.server.federation.store.protocol.RemoveMountTableE
 import org.apache.hadoop.hdfs.server.federation.store.protocol.RemoveMountTableEntryResponse;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.UpdateMountTableEntryRequest;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.UpdateMountTableEntryResponse;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.impl.pb.AddMountTableEntriesRequestPBImpl;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.impl.pb.AddMountTableEntriesResponsePBImpl;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.impl.pb.AddMountTableEntryRequestPBImpl;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.impl.pb.AddMountTableEntryResponsePBImpl;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.impl.pb.DisableNameserviceRequestPBImpl;
@@ -162,6 +168,20 @@ public class RouterAdminProtocolServerSideTranslatorPB implements
     }
   }
 
+  @Override
+  public AddMountTableEntriesResponseProto addMountTableEntries(RpcController controller,
+      AddMountTableEntriesRequestProto request) throws ServiceException {
+    try {
+      AddMountTableEntriesRequest req = new AddMountTableEntriesRequestPBImpl(request);
+      AddMountTableEntriesResponse response = server.addMountTableEntries(req);
+      AddMountTableEntriesResponsePBImpl responsePB =
+          (AddMountTableEntriesResponsePBImpl) response;
+      return responsePB.getProto();
+    } catch (IOException e) {
+      throw new ServiceException(e);
+    }
+  }
+
   /**
    * Get matching mount table entries.
    */

hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/protocolPB/RouterAdminProtocolTranslatorPB.java

@@ -22,6 +22,8 @@ import java.io.IOException;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
+import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.AddMountTableEntriesRequestProto;
+import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.AddMountTableEntriesResponseProto;
 import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.AddMountTableEntryRequestProto;
 import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.AddMountTableEntryResponseProto;
 import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.DisableNameserviceRequestProto;
@@ -52,6 +54,8 @@ import org.apache.hadoop.hdfs.server.federation.resolver.MountTableManager;
 import org.apache.hadoop.hdfs.server.federation.resolver.RouterGenericManager;
 import org.apache.hadoop.hdfs.server.federation.router.NameserviceManager;
 import org.apache.hadoop.hdfs.server.federation.router.RouterStateManager;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntriesRequest;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntriesResponse;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntryRequest;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntryResponse;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.DisableNameserviceRequest;
@@ -76,6 +80,8 @@ import org.apache.hadoop.hdfs.server.federation.store.protocol.RemoveMountTableE
 import org.apache.hadoop.hdfs.server.federation.store.protocol.RemoveMountTableEntryResponse;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.UpdateMountTableEntryRequest;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.UpdateMountTableEntryResponse;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.impl.pb.AddMountTableEntriesRequestPBImpl;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.impl.pb.AddMountTableEntriesResponsePBImpl;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.impl.pb.AddMountTableEntryRequestPBImpl;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.impl.pb.AddMountTableEntryResponsePBImpl;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.impl.pb.DisableNameserviceRequestPBImpl;
@@ -154,6 +160,19 @@ public class RouterAdminProtocolTranslatorPB
     }
   }
 
+  @Override
+  public AddMountTableEntriesResponse addMountTableEntries(AddMountTableEntriesRequest request)
+      throws IOException {
+    AddMountTableEntriesRequestPBImpl requestPB = (AddMountTableEntriesRequestPBImpl) request;
+    AddMountTableEntriesRequestProto proto = requestPB.getProto();
+    try {
+      AddMountTableEntriesResponseProto response = rpcProxy.addMountTableEntries(null, proto);
+      return new AddMountTableEntriesResponsePBImpl(response);
+    } catch (ServiceException e) {
+      throw new IOException(ProtobufHelper.getRemoteException(e).getMessage());
+    }
+  }
+
   @Override
   public UpdateMountTableEntryResponse updateMountTableEntry(
       UpdateMountTableEntryRequest request) throws IOException {

hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/resolver/MountTableManager.java

@@ -19,6 +19,8 @@ package org.apache.hadoop.hdfs.server.federation.resolver;
 
 import java.io.IOException;
 
+import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntriesRequest;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntriesResponse;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntryRequest;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntryResponse;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.GetDestinationRequest;
@@ -48,6 +50,17 @@ public interface MountTableManager {
   AddMountTableEntryResponse addMountTableEntry(
       AddMountTableEntryRequest request) throws IOException;
 
+  /**
+   * Add multiple entries to the mount table.
+   *
+   * @param request Request object with fully populated list of mount point entries.
+   * @return True if all the mount table entries were successfully committed to the
+   * data store.
+   * @throws IOException Throws exception if the data store is not initialized.
+   */
+  AddMountTableEntriesResponse addMountTableEntries(
+      AddMountTableEntriesRequest request) throws IOException;
+
   /**
    * Updates an existing entry in the mount table.
    *

hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterAdminServer.java

@@ -31,6 +31,8 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
+import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntriesRequest;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntriesResponse;
 import org.apache.hadoop.util.Preconditions;
 
 import org.apache.hadoop.conf.Configuration;
@@ -349,15 +351,26 @@ public class RouterAdminServer extends AbstractService
     MountTable mountTable = request.getEntry();
     verifyMaxComponentLength(mountTable);
     if (this.mountTableCheckDestination) {
-      List<String> nsIds = verifyFileInDestinations(mountTable);
-      if (!nsIds.isEmpty()) {
-        throw new IllegalArgumentException("File not found in downstream " +
-            "nameservices: " + StringUtils.join(",", nsIds));
-      }
+      verifyFileExistenceInDest(mountTable);
     }
     return getMountTableStore().addMountTableEntry(request);
   }
 
+  @Override
+  public AddMountTableEntriesResponse addMountTableEntries(AddMountTableEntriesRequest request)
+      throws IOException {
+    List<MountTable> mountTables = request.getEntries();
+    for (MountTable mountTable : mountTables) {
+      verifyMaxComponentLength(mountTable);
+    }
+    if (this.mountTableCheckDestination) {
+      for (MountTable mountTable : mountTables) {
+        verifyFileExistenceInDest(mountTable);
+      }
+    }
+    return getMountTableStore().addMountTableEntries(request);
+  }
+
   @Override
   public UpdateMountTableEntryResponse updateMountTableEntry(
       UpdateMountTableEntryRequest request) throws IOException {
@@ -366,11 +379,7 @@ public class RouterAdminServer extends AbstractService
     // Checks max component length limit.
     verifyMaxComponentLength(updateEntry);
     if (this.mountTableCheckDestination) {
-      List<String> nsIds = verifyFileInDestinations(updateEntry);
-      if (!nsIds.isEmpty()) {
-        throw new IllegalArgumentException("File not found in downstream " +
-            "nameservices: " + StringUtils.join(",", nsIds));
-      }
+      verifyFileExistenceInDest(updateEntry);
     }
     if (this.router.getSubclusterResolver() instanceof MountTableResolver) {
       MountTableResolver mResolver =
@@ -408,6 +417,14 @@ public class RouterAdminServer extends AbstractService
     return response;
   }
 
+  private void verifyFileExistenceInDest(MountTable mountTable) throws IOException {
+    List<String> nsIds = verifyFileInDestinations(mountTable);
+    if (!nsIds.isEmpty()) {
+      throw new IllegalArgumentException(
+          "File not found in downstream nameservices: " + StringUtils.join(",", nsIds));
+    }
+  }
+
   /**
    * Checks whether quota needs to be synchronized with namespace or not. Quota
    * needs to be synchronized either if there is change in mount entry quota or

hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/store/impl/MountTableStoreImpl.java

@@ -33,6 +33,8 @@ import org.apache.hadoop.hdfs.server.federation.router.RouterPermissionChecker;
 import org.apache.hadoop.hdfs.server.federation.router.RouterQuotaUsage;
 import org.apache.hadoop.hdfs.server.federation.store.MountTableStore;
 import org.apache.hadoop.hdfs.server.federation.store.driver.StateStoreDriver;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntriesRequest;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntriesResponse;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntryRequest;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntryResponse;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.GetDestinationRequest;
@@ -129,6 +131,29 @@ public class MountTableStoreImpl extends MountTableStore {
     }
   }
 
+  @Override
+  public AddMountTableEntriesResponse addMountTableEntries(AddMountTableEntriesRequest request)
+      throws IOException {
+    List<MountTable> mountTables = request.getEntries();
+    if (mountTables == null || mountTables.size() == 0) {
+      AddMountTableEntriesResponse response = AddMountTableEntriesResponse.newInstance();
+      response.setStatus(false);
+      return response;
+    }
+    for (MountTable mountTable : mountTables) {
+      mountTable.validate();
+      final String src = mountTable.getSourcePath();
+      checkMountTablePermission(src);
+    }
+    boolean status = getDriver().putAll(mountTables, false, true);
+    AddMountTableEntriesResponse response = AddMountTableEntriesResponse.newInstance();
+    response.setStatus(status);
+    if (status) {
+      updateCacheAllRouters();
+    }
+    return response;
+  }
+
   @Override
   public UpdateMountTableEntryResponse updateMountTableEntry(
       UpdateMountTableEntryRequest request) throws IOException {

hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/store/protocol/AddMountTableEntriesRequest.java

@@ -0,0 +1,51 @@
+/*
+ * 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.federation.store.protocol;
+
+import java.util.List;
+
+import org.apache.hadoop.classification.InterfaceAudience;
+import org.apache.hadoop.classification.InterfaceStability;
+import org.apache.hadoop.hdfs.server.federation.store.driver.StateStoreSerializer;
+import org.apache.hadoop.hdfs.server.federation.store.records.MountTable;
+
+/**
+ * API request for adding all mount table entries to the state store.
+ */
+public abstract class AddMountTableEntriesRequest {
+
+  public static AddMountTableEntriesRequest newInstance() {
+    return StateStoreSerializer.newRecord(AddMountTableEntriesRequest.class);
+  }
+
+  public static AddMountTableEntriesRequest newInstance(List<MountTable> newEntry) {
+    AddMountTableEntriesRequest request = newInstance();
+    request.setEntries(newEntry);
+    return request;
+  }
+
+  @InterfaceAudience.Public
+  @InterfaceStability.Unstable
+  public abstract List<MountTable> getEntries();
+
+  @InterfaceAudience.Public
+  @InterfaceStability.Unstable
+  public abstract void setEntries(List<MountTable> mount);
+
+}

hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/store/protocol/AddMountTableEntriesResponse.java

@@ -0,0 +1,42 @@
+/*
+ * 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.federation.store.protocol;
+
+import java.io.IOException;
+
+import org.apache.hadoop.classification.InterfaceAudience.Public;
+import org.apache.hadoop.classification.InterfaceStability.Unstable;
+import org.apache.hadoop.hdfs.server.federation.store.driver.StateStoreSerializer;
+
+/**
+ * API response for adding multiple mount table entries to the state store.
+ */
+public abstract class AddMountTableEntriesResponse {
+
+  public static AddMountTableEntriesResponse newInstance() throws IOException {
+    return StateStoreSerializer.newRecord(AddMountTableEntriesResponse.class);
+  }
+
+  @Public
+  @Unstable
+  public abstract boolean getStatus();
+
+  @Public
+  @Unstable
+  public abstract void setStatus(boolean result);
+}

hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/store/protocol/impl/pb/AddMountTableEntriesRequestPBImpl.java

@@ -0,0 +1,88 @@
+/*
+ * 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.federation.store.protocol.impl.pb;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.hadoop.thirdparty.protobuf.Message;
+
+import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.AddMountTableEntriesRequestProto;
+import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.AddMountTableEntriesRequestProtoOrBuilder;
+import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.MountTableRecordProto;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntriesRequest;
+import org.apache.hadoop.hdfs.server.federation.store.records.MountTable;
+import org.apache.hadoop.hdfs.server.federation.store.records.impl.pb.MountTablePBImpl;
+import org.apache.hadoop.hdfs.server.federation.store.records.impl.pb.PBRecord;
+
+/**
+ * Protobuf implementation of the state store API object addMountTableEntriesRequest.
+ */
+public class AddMountTableEntriesRequestPBImpl
+    extends AddMountTableEntriesRequest implements PBRecord {
+
+  private final FederationProtocolPBTranslator<AddMountTableEntriesRequestProto,
+      AddMountTableEntriesRequestProto.Builder,
+      AddMountTableEntriesRequestProtoOrBuilder> translator =
+      new FederationProtocolPBTranslator<>(AddMountTableEntriesRequestProto.class);
+
+  public AddMountTableEntriesRequestPBImpl() {
+  }
+
+  public AddMountTableEntriesRequestPBImpl(AddMountTableEntriesRequestProto proto) {
+    this.translator.setProto(proto);
+  }
+
+  @Override
+  public AddMountTableEntriesRequestProto getProto() {
+    return this.translator.build();
+  }
+
+  @Override
+  public void setProto(Message proto) {
+    this.translator.setProto(proto);
+  }
+
+  @Override
+  public void readInstance(String base64String) throws IOException {
+    this.translator.readInstance(base64String);
+  }
+
+  @Override
+  public List<MountTable> getEntries() {
+    List<MountTableRecordProto> entryProto = this.translator.getProtoOrBuilder().getEntryList();
+    if (entryProto == null) {
+      return null;
+    }
+    List<MountTable> mountTables = new ArrayList<>();
+    entryProto.forEach(e -> mountTables.add(new MountTablePBImpl(e)));
+    return mountTables;
+  }
+
+  @Override
+  public void setEntries(List<MountTable> mountTables) {
+    for (MountTable mountTable : mountTables) {
+      if (mountTable instanceof MountTablePBImpl) {
+        MountTablePBImpl mountPB = (MountTablePBImpl) mountTable;
+        MountTableRecordProto mountProto = mountPB.getProto();
+        translator.getBuilder().addEntry(mountProto);
+      }
+    }
+  }
+}

hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/store/protocol/impl/pb/AddMountTableEntriesResponsePBImpl.java

@@ -0,0 +1,72 @@
+/*
+ * 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.federation.store.protocol.impl.pb;
+
+import java.io.IOException;
+
+import org.apache.hadoop.thirdparty.protobuf.Message;
+
+import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.AddMountTableEntriesResponseProto;
+import org.apache.hadoop.hdfs.federation.protocol.proto.HdfsServerFederationProtos.AddMountTableEntriesResponseProtoOrBuilder;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntriesResponse;
+import org.apache.hadoop.hdfs.server.federation.store.records.impl.pb.PBRecord;
+
+/**
+ * Protobuf implementation of the state store API object addMountTableEntriesResponse.
+ */
+public class AddMountTableEntriesResponsePBImpl
+    extends AddMountTableEntriesResponse implements PBRecord {
+
+  private final FederationProtocolPBTranslator<AddMountTableEntriesResponseProto,
+      AddMountTableEntriesResponseProto.Builder,
+      AddMountTableEntriesResponseProtoOrBuilder> translator =
+      new FederationProtocolPBTranslator<>(AddMountTableEntriesResponseProto.class);
+
+  public AddMountTableEntriesResponsePBImpl() {
+  }
+
+  public AddMountTableEntriesResponsePBImpl(
+      AddMountTableEntriesResponseProto proto) {
+    this.translator.setProto(proto);
+  }
+
+  @Override
+  public AddMountTableEntriesResponseProto getProto() {
+    return this.translator.build();
+  }
+
+  @Override
+  public void setProto(Message proto) {
+    this.translator.setProto(proto);
+  }
+
+  @Override
+  public void readInstance(String base64String) throws IOException {
+    this.translator.readInstance(base64String);
+  }
+
+  @Override
+  public boolean getStatus() {
+    return this.translator.getProtoOrBuilder().getStatus();
+  }
+
+  @Override
+  public void setStatus(boolean result) {
+    this.translator.getBuilder().setStatus(result);
+  }
+}

hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/tools/federation/AddMountAttributes.java

@@ -0,0 +1,190 @@
+/*
+ * 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.tools.federation;
+
+import java.io.IOException;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import org.apache.hadoop.hdfs.server.federation.resolver.order.DestinationOrder;
+import org.apache.hadoop.hdfs.server.federation.store.records.MountTable;
+
+/**
+ * Add mount entry attributes to be used by Router admin.
+ */
+public class AddMountAttributes {
+
+  private String mount;
+  private String[] nss;
+  private String dest;
+  private boolean readonly;
+  private boolean faultTolerant;
+  private DestinationOrder order;
+  private RouterAdmin.ACLEntity aclInfo;
+  private int paramIndex;
+
+  public String getMount() {
+    return mount;
+  }
+
+  public void setMount(String mount) {
+    this.mount = mount;
+  }
+
+  public String[] getNss() {
+    return nss;
+  }
+
+  public void setNss(String[] nss) {
+    this.nss = nss;
+  }
+
+  public String getDest() {
+    return dest;
+  }
+
+  public void setDest(String dest) {
+    this.dest = dest;
+  }
+
+  public boolean isReadonly() {
+    return readonly;
+  }
+
+  public void setReadonly(boolean readonly) {
+    this.readonly = readonly;
+  }
+
+  public boolean isFaultTolerant() {
+    return faultTolerant;
+  }
+
+  public void setFaultTolerant(boolean faultTolerant) {
+    this.faultTolerant = faultTolerant;
+  }
+
+  public DestinationOrder getOrder() {
+    return order;
+  }
+
+  public void setOrder(DestinationOrder order) {
+    this.order = order;
+  }
+
+  public RouterAdmin.ACLEntity getAclInfo() {
+    return aclInfo;
+  }
+
+  public void setAclInfo(RouterAdmin.ACLEntity aclInfo) {
+    this.aclInfo = aclInfo;
+  }
+
+  public int getParamIndex() {
+    return paramIndex;
+  }
+
+  public void setParamIndex(int paramIndex) {
+    this.paramIndex = paramIndex;
+  }
+
+  /**
+   * Retrieve mount table object with all attributes derived from this object.
+   *
+   * @return MountTable object with updated attributes.
+   * @throws IOException If mount table instantiation fails.
+   */
+  public MountTable getMountTableEntryWithAttributes() throws IOException {
+    String normalizedMount = RouterAdmin.normalizeFileSystemPath(this.getMount());
+    return getMountTableForAddRequest(normalizedMount);
+  }
+
+  /**
+   * Retrieve mount table object with all attributes derived from this object.
+   * The returned mount table could be either new or existing one with updated attributes.
+   *
+   * @param existingEntry Existing mount table entry. If null, new mount table object is created,
+   * otherwise the existing mount table object is updated.
+   * @return MountTable object with updated attributes.
+   * @throws IOException If mount table instantiation fails.
+   */
+  public MountTable getNewOrUpdatedMountTableEntryWithAttributes(MountTable existingEntry)
+      throws IOException {
+    if (existingEntry == null) {
+      return getMountTableForAddRequest(this.mount);
+    } else {
+      // Update the existing entry if it exists
+      for (String nsId : this.getNss()) {
+        if (!existingEntry.addDestination(nsId, this.getDest())) {
+          System.err.println("Cannot add destination at " + nsId + " " + this.getDest());
+          return null;
+        }
+      }
+      updateCommonAttributes(existingEntry);
+      return existingEntry;
+    }
+  }
+
+  /**
+   * Create a new mount table object from the given mount point and update its attributes.
+   *
+   * @param mountSrc mount point src.
+   * @return MountTable object with updated attributes.
+   * @throws IOException If mount table instantiation fails.
+   */
+  private MountTable getMountTableForAddRequest(String mountSrc) throws IOException {
+    Map<String, String> destMap = new LinkedHashMap<>();
+    for (String ns : this.getNss()) {
+      destMap.put(ns, this.getDest());
+    }
+    MountTable newEntry = MountTable.newInstance(mountSrc, destMap);
+    updateCommonAttributes(newEntry);
+    return newEntry;
+  }
+
+  /**
+   * Common attributes like read-only, fault-tolerant, dest order, owner, group, mode etc are
+   * updated for the given mount table object.
+   *
+   * @param existingEntry Mount table object.
+   */
+  private void updateCommonAttributes(MountTable existingEntry) {
+    if (this.isReadonly()) {
+      existingEntry.setReadOnly(true);
+    }
+    if (this.isFaultTolerant()) {
+      existingEntry.setFaultTolerant(true);
+    }
+    if (this.getOrder() != null) {
+      existingEntry.setDestOrder(this.getOrder());
+    }
+    RouterAdmin.ACLEntity mountAclInfo = this.getAclInfo();
+    // Update ACL info of mount table entry
+    if (mountAclInfo.getOwner() != null) {
+      existingEntry.setOwnerName(mountAclInfo.getOwner());
+    }
+    if (mountAclInfo.getGroup() != null) {
+      existingEntry.setGroupName(mountAclInfo.getGroup());
+    }
+    if (mountAclInfo.getMode() != null) {
+      existingEntry.setMode(mountAclInfo.getMode());
+    }
+    existingEntry.validate();
+  }
+
+}

hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/tools/federation/RouterAdmin.java

@@ -20,13 +20,16 @@ package org.apache.hadoop.hdfs.tools.federation;
 import java.io.IOException;
 import java.io.PrintStream;
 import java.net.InetSocketAddress;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
+import java.util.HashSet;
 import java.util.LinkedHashMap;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
+import java.util.Set;
 import java.util.TreeMap;
 import java.util.regex.Pattern;
 
@@ -52,6 +55,8 @@ import org.apache.hadoop.hdfs.server.federation.store.CachedRecordStore;
 import org.apache.hadoop.hdfs.server.federation.store.RecordStore;
 import org.apache.hadoop.hdfs.server.federation.store.StateStoreService;
 import org.apache.hadoop.hdfs.server.federation.store.StateStoreUtils;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntriesRequest;
+import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntriesResponse;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntryRequest;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntryResponse;
 import org.apache.hadoop.hdfs.server.federation.store.protocol.DisableNameserviceRequest;
@@ -106,6 +111,7 @@ public class RouterAdmin extends Configured implements Tool {
 
   private static final Logger LOG = LoggerFactory.getLogger(RouterAdmin.class);
   private static final String DUMP_COMMAND = "-dumpState";
+  private static final String ADD_ALL_COMMAND = "-addAll";
 
   private RouterClient client;
 
@@ -132,15 +138,15 @@ public class RouterAdmin extends Configured implements Tool {
     System.out.println(usage);
   }
 
-  private void printUsage(String cmd) {
+  private static void printUsage(String cmd) {
     String usage = getUsage(cmd);
     System.out.println(usage);
   }
 
-  private String getUsage(String cmd) {
+  private static String getUsage(String cmd) {
     if (cmd == null) {
       String[] commands =
-          {"-add", "-update", "-rm", "-ls", "-getDestination", "-setQuota",
+          {"-add", ADD_ALL_COMMAND, "-update", "-rm", "-ls", "-getDestination", "-setQuota",
               "-setStorageTypeQuota", "-clrQuota", "-clrStorageTypeQuota",
               DUMP_COMMAND, "-safemode", "-nameservice", "-getDisabledNameservices",
               "-refresh", "-refreshRouterArgs",
@@ -160,6 +166,16 @@ public class RouterAdmin extends Configured implements Tool {
           + "[-readonly] [-faulttolerant] "
           + "[-order HASH|LOCAL|RANDOM|HASH_ALL|SPACE] "
           + "-owner <owner> -group <group> -mode <mode>]";
+    } else if (cmd.equals(ADD_ALL_COMMAND)) {
+      return "\t[" + ADD_ALL_COMMAND + " "
+          + "<source1> <nameservice1,nameservice2,...> <destination1> "
+          + "[-readonly] [-faulttolerant] " + "[-order HASH|LOCAL|RANDOM|HASH_ALL|SPACE] "
+          + "-owner <owner1> -group <group1> -mode <mode1>"
+          + " , "
+          + "<source2> <nameservice1,nameservice2,...> <destination2> "
+          + "[-readonly] [-faulttolerant] " + "[-order HASH|LOCAL|RANDOM|HASH_ALL|SPACE] "
+          + "-owner <owner2> -group <group2> -mode <mode2>"
+          + " , ...]";
     } else if (cmd.equals("-update")) {
       return "\t[-update <source>"
           + " [<nameservice1, nameservice2, ...> <destination>] "
@@ -423,6 +439,12 @@ public class RouterAdmin extends Configured implements Tool {
         exitCode = refreshSuperUserGroupsConfiguration();
       } else if ("-refreshCallQueue".equals(cmd)) {
         exitCode = refreshCallQueue();
+      } else if (ADD_ALL_COMMAND.equals(cmd)) {
+        if (addAllMount(argv, i)) {
+          System.out.println("Successfully added all mount points ");
+        } else {
+          exitCode = -1;
+        }
       } else {
         throw new IllegalArgumentException("Unknown Command: " + cmd);
       }
@@ -462,6 +484,152 @@ public class RouterAdmin extends Configured implements Tool {
     return exitCode;
   }
 
+  /**
+   * Add all mount point entries provided in the request.
+   *
+   * @param parameters Parameters for the mount points.
+   * @param i Current index on the parameters array.
+   * @return True if adding all mount points was successful, False otherwise.
+   * @throws IOException If the RPC call to add the mount points fail.
+   */
+  private boolean addAllMount(String[] parameters, int i) throws IOException {
+    List<AddMountAttributes> addMountAttributesList = new ArrayList<>();
+    Set<String> mounts = new HashSet<>();
+    while (i < parameters.length) {
+      AddMountAttributes addMountAttributes = getAddMountAttributes(parameters, i, true);
+      if (addMountAttributes == null) {
+        return false;
+      }
+      if (!mounts.add(addMountAttributes.getMount())) {
+        System.err.println("Multiple inputs for mount: " + addMountAttributes.getMount());
+        return false;
+      }
+      i = addMountAttributes.getParamIndex();
+      addMountAttributesList.add(addMountAttributes);
+    }
+    List<MountTable> addEntries = getMountTablesFromAddAllAttributes(addMountAttributesList);
+    AddMountTableEntriesRequest request =
+        AddMountTableEntriesRequest.newInstance(addEntries);
+    MountTableManager mountTable = client.getMountTableManager();
+    AddMountTableEntriesResponse addResponse =
+        mountTable.addMountTableEntries(request);
+    boolean added = addResponse.getStatus();
+    if (!added) {
+      System.err.println("Cannot add some or all mount points");
+    }
+    return added;
+  }
+
+  /**
+   * From the given params, form and retrieve AddMountAttributes object. This object is meant
+   * to be used while adding single or multiple mount points with their own specific attributes.
+   *
+   * @param parameters Parameters for the mount point.
+   * @param i Current index on the parameters array.
+   * @param isMultipleAdd True if multiple mount points are to be added, False if single mount
+   * point is to be added.
+   * @return AddMountAttributes object.
+   */
+  private static AddMountAttributes getAddMountAttributes(String[] parameters, int i,
+      boolean isMultipleAdd) {
+    // Mandatory parameters
+    String mount = parameters[i++];
+    String[] nss = parameters[i++].split(",");
+    String destination = parameters[i++];
+
+    if (isMultipleAdd) {
+      String[] destinations = destination.split(",");
+      if (nss.length != destinations.length && destinations.length > 1) {
+        String message =
+            "Invalid namespaces and destinations. The number of destinations " + destinations.length
+                + " is not matched with the number of namespaces " + nss.length;
+        System.err.println(message);
+        return null;
+      }
+    }
+
+    // Optional parameters
+    boolean readOnly = false;
+    boolean faultTolerant = false;
+    String owner = null;
+    String group = null;
+    FsPermission mode = null;
+    DestinationOrder order = DestinationOrder.HASH;
+    while (i < parameters.length) {
+      if (isMultipleAdd && ",".equals(parameters[i])) {
+        i++;
+        break;
+      }
+      switch (parameters[i]) {
+      case "-readonly": {
+        readOnly = true;
+        break;
+      }
+      case "-faulttolerant": {
+        faultTolerant = true;
+        break;
+      }
+      case "-order": {
+        i++;
+        try {
+          order = DestinationOrder.valueOf(parameters[i]);
+        } catch (Exception e) {
+          System.err.println("Cannot parse order: " + parameters[i]);
+        }
+        break;
+      }
+      case "-owner": {
+        i++;
+        owner = parameters[i];
+        break;
+      }
+      case "-group": {
+        i++;
+        group = parameters[i];
+        break;
+      }
+      case "-mode": {
+        i++;
+        short modeValue = Short.parseShort(parameters[i], 8);
+        mode = new FsPermission(modeValue);
+        break;
+      }
+      default: {
+        printUsage(isMultipleAdd ? ADD_ALL_COMMAND : "-add");
+        return null;
+      }
+      }
+      i++;
+    }
+    AddMountAttributes addMountAttributes = new AddMountAttributes();
+    addMountAttributes.setMount(mount);
+    addMountAttributes.setNss(nss);
+    addMountAttributes.setDest(destination);
+    addMountAttributes.setReadonly(readOnly);
+    addMountAttributes.setFaultTolerant(faultTolerant);
+    addMountAttributes.setOrder(order);
+    addMountAttributes.setAclInfo(new ACLEntity(owner, group, mode));
+    addMountAttributes.setParamIndex(i);
+    return addMountAttributes;
+  }
+
+  /**
+   * Prepare and return the list of mount table objects from the given list of
+   * AddMountAttributes objects.
+   *
+   * @param addMountAttributesList The list of AddMountAttributes objects.
+   * @return The list of MountTable objects.
+   * @throws IOException If the creation of the mount table objects fail.
+   */
+  private List<MountTable> getMountTablesFromAddAllAttributes(
+      List<AddMountAttributes> addMountAttributesList) throws IOException {
+    List<MountTable> mountTables = new ArrayList<>();
+    for (AddMountAttributes addMountAttributes : addMountAttributesList) {
+      mountTables.add(addMountAttributes.getMountTableEntryWithAttributes());
+    }
+    return mountTables;
+  }
+
   /**
    * Refresh superuser proxy groups mappings on Router.
    *
@@ -511,149 +679,44 @@ public class RouterAdmin extends Configured implements Tool {
    * @throws IOException If it cannot add the mount point.
    */
   public boolean addMount(String[] parameters, int i) throws IOException {
-    // Mandatory parameters
-    String mount = parameters[i++];
-    String[] nss = parameters[i++].split(",");
-    String dest = parameters[i++];
-
-    // Optional parameters
-    boolean readOnly = false;
-    boolean faultTolerant = false;
-    String owner = null;
-    String group = null;
-    FsPermission mode = null;
-    DestinationOrder order = DestinationOrder.HASH;
-    while (i < parameters.length) {
-      if (parameters[i].equals("-readonly")) {
-        readOnly = true;
-      } else if (parameters[i].equals("-faulttolerant")) {
-        faultTolerant = true;
-      } else if (parameters[i].equals("-order")) {
-        i++;
-        try {
-          order = DestinationOrder.valueOf(parameters[i]);
-        } catch(Exception e) {
-          System.err.println("Cannot parse order: " + parameters[i]);
-        }
-      } else if (parameters[i].equals("-owner")) {
-        i++;
-        owner = parameters[i];
-      } else if (parameters[i].equals("-group")) {
-        i++;
-        group = parameters[i];
-      } else if (parameters[i].equals("-mode")) {
-        i++;
-        short modeValue = Short.parseShort(parameters[i], 8);
-        mode = new FsPermission(modeValue);
-      } else {
-        printUsage("-add");
-        return false;
-      }
-
-      i++;
+    AddMountAttributes addMountAttributes = getAddMountAttributes(parameters, i, false);
+    if (addMountAttributes == null) {
+      return false;
     }
-
-    return addMount(mount, nss, dest, readOnly, faultTolerant, order,
-        new ACLEntity(owner, group, mode));
+    return addMount(addMountAttributes);
   }
 
   /**
    * Add a mount table entry or update if it exists.
    *
-   * @param mount Mount point.
-   * @param nss Namespaces where this is mounted to.
-   * @param dest Destination path.
-   * @param readonly If the mount point is read only.
-   * @param order Order of the destination locations.
-   * @param aclInfo the ACL info for mount point.
+   * @param addMountAttributes attributes associated with add mount point request.
    * @return If the mount point was added.
    * @throws IOException Error adding the mount point.
    */
-  public boolean addMount(String mount, String[] nss, String dest,
-      boolean readonly, boolean faultTolerant, DestinationOrder order,
-      ACLEntity aclInfo)
+  public boolean addMount(AddMountAttributes addMountAttributes)
       throws IOException {
-    mount = normalizeFileSystemPath(mount);
+    String mount = normalizeFileSystemPath(addMountAttributes.getMount());
     // Get the existing entry
     MountTableManager mountTable = client.getMountTableManager();
     MountTable existingEntry = getMountEntry(mount, mountTable);
+    MountTable existingOrNewEntry =
+        addMountAttributes.getNewOrUpdatedMountTableEntryWithAttributes(existingEntry);
+    if (existingOrNewEntry == null) {
+      return false;
+    }
 
     if (existingEntry == null) {
-      // Create and add the entry if it doesn't exist
-      Map<String, String> destMap = new LinkedHashMap<>();
-      for (String ns : nss) {
-        destMap.put(ns, dest);
-      }
-      MountTable newEntry = MountTable.newInstance(mount, destMap);
-      if (readonly) {
-        newEntry.setReadOnly(true);
-      }
-      if (faultTolerant) {
-        newEntry.setFaultTolerant(true);
-      }
-      if (order != null) {
-        newEntry.setDestOrder(order);
-      }
-
-      // Set ACL info for mount table entry
-      if (aclInfo.getOwner() != null) {
-        newEntry.setOwnerName(aclInfo.getOwner());
-      }
-
-      if (aclInfo.getGroup() != null) {
-        newEntry.setGroupName(aclInfo.getGroup());
-      }
-
-      if (aclInfo.getMode() != null) {
-        newEntry.setMode(aclInfo.getMode());
-      }
-
-      newEntry.validate();
-
-      AddMountTableEntryRequest request =
-          AddMountTableEntryRequest.newInstance(newEntry);
-      AddMountTableEntryResponse addResponse =
-          mountTable.addMountTableEntry(request);
+      AddMountTableEntryRequest request = AddMountTableEntryRequest
+          .newInstance(existingOrNewEntry);
+      AddMountTableEntryResponse addResponse = mountTable.addMountTableEntry(request);
       boolean added = addResponse.getStatus();
       if (!added) {
         System.err.println("Cannot add mount point " + mount);
       }
       return added;
     } else {
-      // Update the existing entry if it exists
-      for (String nsId : nss) {
-        if (!existingEntry.addDestination(nsId, dest)) {
-          System.err.println("Cannot add destination at " + nsId + " " + dest);
-          return false;
-        }
-      }
-      if (readonly) {
-        existingEntry.setReadOnly(true);
-      }
-      if (faultTolerant) {
-        existingEntry.setFaultTolerant(true);
-      }
-      if (order != null) {
-        existingEntry.setDestOrder(order);
-      }
-
-      // Update ACL info of mount table entry
-      if (aclInfo.getOwner() != null) {
-        existingEntry.setOwnerName(aclInfo.getOwner());
-      }
-
-      if (aclInfo.getGroup() != null) {
-        existingEntry.setGroupName(aclInfo.getGroup());
-      }
-
-      if (aclInfo.getMode() != null) {
-        existingEntry.setMode(aclInfo.getMode());
-      }
-
-      existingEntry.validate();
-
       UpdateMountTableEntryRequest updateRequest =
-          UpdateMountTableEntryRequest.newInstance(existingEntry);
+          UpdateMountTableEntryRequest.newInstance(existingOrNewEntry);
       UpdateMountTableEntryResponse updateResponse =
           mountTable.updateMountTableEntry(updateRequest);
       boolean updated = updateResponse.getStatus();

hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/proto/FederationProtocol.proto

@@ -162,6 +162,14 @@ message AddMountTableEntryResponseProto {
   optional bool status = 1;
 }
 
+message AddMountTableEntriesRequestProto {
+  repeated MountTableRecordProto entry = 1;
+}
+
+message AddMountTableEntriesResponseProto {
+  optional bool status = 1;
+}
+
 message UpdateMountTableEntryRequestProto {
   optional MountTableRecordProto entry = 1;
 }

hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/proto/RouterProtocol.proto

@@ -40,6 +40,11 @@ service RouterAdminProtocolService {
    */
   rpc removeMountTableEntry(RemoveMountTableEntryRequestProto) returns(RemoveMountTableEntryResponseProto);
 
+  /**
+   * Add all mount table entries that are present in the request.
+   */
+  rpc addMountTableEntries(AddMountTableEntriesRequestProto) returns(AddMountTableEntriesResponseProto);
+
   /**
    * Get matching mount entries
    */

hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterAdminCLI.java

@@ -20,6 +20,7 @@ package org.apache.hadoop.hdfs.server.federation.router;
 import static org.apache.hadoop.hdfs.server.federation.FederationTestUtils.createNamenodeReport;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
 import static org.junit.Assert.assertTrue;
 
 import java.io.ByteArrayOutputStream;
@@ -853,6 +854,12 @@ public class TestRouterAdminCLI {
         + "[-readonly] [-faulttolerant] "
         + "[-order HASH|LOCAL|RANDOM|HASH_ALL|SPACE] "
         + "-owner <owner> -group <group> -mode <mode>]\n"
+        + "\t[-addAll <source1> <nameservice1,nameservice2,...> <destination1> "
+        + "[-readonly] [-faulttolerant] [-order HASH|LOCAL|RANDOM|HASH_ALL|SPACE] "
+        + "-owner <owner1> -group <group1> -mode <mode1>"
+        + " , <source2> <nameservice1,nameservice2,...> <destination2> "
+        + "[-readonly] [-faulttolerant] [-order HASH|LOCAL|RANDOM|HASH_ALL|SPACE] "
+        + "-owner <owner2> -group <group2> -mode <mode2> , ...]\n"
         + "\t[-update <source> [<nameservice1, nameservice2, ...> "
         + "<destination>] [-readonly true|false]"
         + " [-faulttolerant true|false] "
@@ -1840,6 +1847,79 @@ public class TestRouterAdminCLI {
         buffer.toString().trim().replaceAll("[0-9]{4,}+", "XXX"));
   }
 
+  @Test
+  public void testAddMultipleMountPointsSuccess() throws Exception {
+    String[] argv =
+        new String[] {"-addAll", "/testAddMultipleMountPoints-01", "ns01", "/dest01", ",",
+            "/testAddMultipleMountPoints-02", "ns02,ns03", "/dest02", "-order", "HASH_ALL",
+            "-faulttolerant", ",", "/testAddMultipleMountPoints-03", "ns03", "/dest03"};
+    assertEquals(0, ToolRunner.run(admin, argv));
+
+    stateStore.loadCache(MountTableStoreImpl.class, true);
+
+    validateMountEntry("/testAddMultipleMountPoints-01", 1, new String[] {"/dest01"},
+        new String[] {"ns01"});
+    validateMountEntry("/testAddMultipleMountPoints-02", 2, new String[] {"/dest02", "/dest02"},
+        new String[] {"ns02", "ns03"});
+    validateMountEntry("/testAddMultipleMountPoints-03", 1, new String[] {"/dest03"},
+        new String[] {"ns03"});
+  }
+
+  private static void validateMountEntry(String mountName, int numDest, String[] dest, String[] nss)
+      throws IOException {
+    GetMountTableEntriesRequest request = GetMountTableEntriesRequest.newInstance(mountName);
+    GetMountTableEntriesResponse response =
+        client.getMountTableManager().getMountTableEntries(request);
+    assertEquals(1, response.getEntries().size());
+    List<RemoteLocation> destinations = response.getEntries().get(0).getDestinations();
+    assertEquals(numDest, destinations.size());
+    for (int i = 0; i < numDest; i++) {
+      assertEquals(mountName, destinations.get(i).getSrc());
+      assertEquals(dest[i], destinations.get(i).getDest());
+      assertEquals(nss[i], destinations.get(i).getNameserviceId());
+    }
+  }
+
+  @Test
+  public void testAddMultipleMountPointsFailure() throws Exception {
+    String[] argv =
+        new String[] {"-addAll", "/testAddMultiMountPoints-01", "ns01", ",", "/dest01", ",",
+            "/testAddMultiMountPoints-02", "ns02,ns03", "/dest02", "-order", "HASH_ALL",
+            "-faulttolerant", ",", "/testAddMultiMountPoints-03", "ns03", "/dest03", ",",
+            "/testAddMultiMountPoints-01", "ns02", "/dest02"};
+    // syntax issue
+    assertNotEquals(0, ToolRunner.run(admin, argv));
+
+    argv =
+        new String[] {"-addAll", "/testAddMultiMountPoints-01", "ns01", "/dest01", ",",
+            "/testAddMultiMountPoints-02", "ns02,ns03", "/dest02", "-order", "HASH_ALL",
+            "-faulttolerant", ",", "/testAddMultiMountPoints-03", "ns03", "/dest03", ",",
+            "/testAddMultiMountPoints-01", "ns02", "/dest02"};
+    // multiple inputs with same mount
+    assertNotEquals(0, ToolRunner.run(admin, argv));
+
+    argv =
+        new String[] {"-addAll", "/testAddMultiMountPoints-01", "ns01", "/dest01,/dest02", ",",
+            "/testAddMultiMountPoints-02", "ns02,ns03", "/dest02", "-order", "HASH_ALL",
+            "-faulttolerant"};
+    // multiple dest entries
+    assertNotEquals(0, ToolRunner.run(admin, argv));
+
+    argv =
+        new String[] {"-addAll", "/testAddMultiMountPoints-01", "ns01", "/dest01", ",",
+            "/testAddMultiMountPoints-02", "ns02,ns03", "/dest02", "-order", "HASH_ALL",
+            "-faulttolerant"};
+    // success
+    assertEquals(0, ToolRunner.run(admin, argv));
+
+    argv =
+        new String[] {"-addAll", "/testAddMultiMountPoints-01", "ns01", "/dest01", ",",
+            "/testAddMultiMountPoints-02", "ns02,ns03", "/dest02", "-order", "HASH_ALL",
+            "-faulttolerant"};
+    // mount points were already added
+    assertNotEquals(0, ToolRunner.run(admin, argv));
+  }
+
   private void addMountTable(String src, String nsId, String dst)
       throws Exception {
     String[] argv = new String[] {"-add", src, nsId, dst};