HDFS-2899. Service protocol changes in DatanodeProtocol to add multiple storages. Contributed by Suresh Srinivas.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1241519 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -45,9 +45,12 @@ Trunk (unreleased changes)
     HDFS-2697. Move RefreshAuthPolicy, RefreshUserMappings, GetUserMappings 
     protocol to protocol buffers. (jitendra)
 
-    HDFS-2880. Protobuf chagnes in DatanodeProtocol to add multiple storages.
+    HDFS-2880. Protobuf changes in DatanodeProtocol to add multiple storages.
     (suresh)
 
+    HDFS-2899. Service protocol changes in DatanodeProtocol to add multiple 
+    storages. (suresh)
+
   IMPROVEMENTS
 
     HADOOP-7524 Change RPC to allow multiple protocols including multuple 

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

@@ -48,15 +48,18 @@
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.ReportBadBlocksRequestProto;
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.StorageBlockReportProto;
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.StorageReceivedDeletedBlocksProto;
-import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.StorageReportProto;
 import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.VersionRequestProto;
 import org.apache.hadoop.hdfs.protocolR23Compatible.ProtocolSignatureWritable;
 import org.apache.hadoop.hdfs.server.namenode.NameNode;
 import org.apache.hadoop.hdfs.server.protocol.DatanodeCommand;
 import org.apache.hadoop.hdfs.server.protocol.DatanodeProtocol;
 import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
+import org.apache.hadoop.hdfs.server.protocol.DatanodeStorage;
 import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo;
 import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo;
+import org.apache.hadoop.hdfs.server.protocol.StorageBlockReport;
+import org.apache.hadoop.hdfs.server.protocol.StorageReceivedDeletedBlocks;
+import org.apache.hadoop.hdfs.server.protocol.StorageReport;
 import org.apache.hadoop.hdfs.server.protocol.UpgradeCommand;
 import org.apache.hadoop.io.retry.RetryPolicies;
 import org.apache.hadoop.io.retry.RetryPolicy;
@@ -153,13 +156,17 @@ public void close() throws IOException {
   }
 
   @Override
-  public DatanodeRegistration registerDatanode(DatanodeRegistration registration)
+  public DatanodeRegistration registerDatanode(DatanodeRegistration registration,
-      throws IOException {
+      DatanodeStorage[] storages) throws IOException {
-    RegisterDatanodeRequestProto req = RegisterDatanodeRequestProto
+    RegisterDatanodeRequestProto.Builder builder = RegisterDatanodeRequestProto
-        .newBuilder().setRegistration(PBHelper.convert(registration)).build();
+        .newBuilder().setRegistration(PBHelper.convert(registration));
+    for (DatanodeStorage s : storages) {
+      builder.addStorages(PBHelper.convert(s));
+    }
+    
     RegisterDatanodeResponseProto resp;
     try {
-      resp = rpcProxy.registerDatanode(NULL_CONTROLLER, req);
+      resp = rpcProxy.registerDatanode(NULL_CONTROLLER, builder.build());
     } catch (ServiceException se) {
       throw ProtobufHelper.getRemoteException(se);
     }
@@ -168,22 +175,19 @@ public DatanodeRegistration registerDatanode(DatanodeRegistration registration)
 
   @Override
   public DatanodeCommand[] sendHeartbeat(DatanodeRegistration registration,
-      long capacity, long dfsUsed, long remaining, long blockPoolUsed,
+      StorageReport[] reports, int xmitsInProgress, int xceiverCount,
-      int xmitsInProgress, int xceiverCount, int failedVolumes)
+      int failedVolumes) throws IOException {
-      throws IOException {
+    HeartbeatRequestProto.Builder builder = HeartbeatRequestProto.newBuilder()
-    StorageReportProto report = StorageReportProto.newBuilder()
+        .setRegistration(PBHelper.convert(registration))
-        .setBlockPoolUsed(blockPoolUsed).setCapacity(capacity)
-        .setDfsUsed(dfsUsed).setRemaining(remaining)
-        .setStorageID(registration.getStorageID()).build();
-    
-    HeartbeatRequestProto req = HeartbeatRequestProto.newBuilder()
-        .setRegistration(PBHelper.convert(registration)).addReports(report)
         .setXmitsInProgress(xmitsInProgress).setXceiverCount(xceiverCount)
-        .setFailedVolumes(failedVolumes)
+        .setFailedVolumes(failedVolumes);
-        .build();
+    for (StorageReport r : reports) {
+      builder.addReports(PBHelper.convert(r));
+    }
+    
     HeartbeatResponseProto resp;
     try {
-      resp = rpcProxy.sendHeartbeat(NULL_CONTROLLER, req);
+      resp = rpcProxy.sendHeartbeat(NULL_CONTROLLER, builder.build());
     } catch (ServiceException se) {
       throw ProtobufHelper.getRemoteException(se);
     }
@@ -198,21 +202,23 @@ public DatanodeCommand[] sendHeartbeat(DatanodeRegistration registration,
 
   @Override
   public DatanodeCommand blockReport(DatanodeRegistration registration,
-      String poolId, long[] blocks) throws IOException {
+      String poolId, StorageBlockReport[] reports) throws IOException {
-    StorageBlockReportProto.Builder reportBuilder = StorageBlockReportProto
+    BlockReportRequestProto.Builder builder = BlockReportRequestProto
-        .newBuilder().setStorageID(registration.getStorageID());
+        .newBuilder().setRegistration(PBHelper.convert(registration))
+        .setBlockPoolId(poolId);
     
-    if (blocks != null) {
+    for (StorageBlockReport r : reports) {
+      StorageBlockReportProto.Builder reportBuilder = StorageBlockReportProto
+          .newBuilder().setStorageID(r.getStorageID());
+      long[] blocks = r.getBlocks();
       for (int i = 0; i < blocks.length; i++) {
         reportBuilder.addBlocks(blocks[i]);
       }
+      builder.addReports(reportBuilder.build());
     }
-    BlockReportRequestProto req = BlockReportRequestProto
-        .newBuilder().setRegistration(PBHelper.convert(registration))
-        .setBlockPoolId(poolId).addReports(reportBuilder.build()).build();
     BlockReportResponseProto resp;
     try {
-      resp = rpcProxy.blockReport(NULL_CONTROLLER, req);
+      resp = rpcProxy.blockReport(NULL_CONTROLLER, builder.build());
     } catch (ServiceException se) {
       throw ProtobufHelper.getRemoteException(se);
     }
@@ -220,23 +226,24 @@ public DatanodeCommand blockReport(DatanodeRegistration registration,
   }
 
   @Override
-  public void blockReceivedAndDeleted(DatanodeRegistration reg,
+  public void blockReceivedAndDeleted(DatanodeRegistration registration,
-      String poolId, ReceivedDeletedBlockInfo[] receivedAndDeletedBlocks)
+      String poolId, StorageReceivedDeletedBlocks[] receivedAndDeletedBlocks)
       throws IOException {
-    StorageReceivedDeletedBlocksProto.Builder builder = 
+    BlockReceivedAndDeletedRequestProto.Builder builder = 
-        StorageReceivedDeletedBlocksProto.newBuilder()
-        .setStorageID(reg.getStorageID());
-    if (receivedAndDeletedBlocks != null) {
-      for (int i = 0; i < receivedAndDeletedBlocks.length; i++) {
-        builder.addBlocks(PBHelper.convert(receivedAndDeletedBlocks[i]));
-      }
-    }
-    BlockReceivedAndDeletedRequestProto req = 
         BlockReceivedAndDeletedRequestProto.newBuilder()
-        .setRegistration(PBHelper.convert(reg))
+        .setRegistration(PBHelper.convert(registration))
-        .setBlockPoolId(poolId).addBlocks(builder.build()).build();
+        .setBlockPoolId(poolId);
+    for (StorageReceivedDeletedBlocks storageBlock : receivedAndDeletedBlocks) {
+      StorageReceivedDeletedBlocksProto.Builder repBuilder = 
+          StorageReceivedDeletedBlocksProto.newBuilder();
+      repBuilder.setStorageID(storageBlock.getStorageID());
+      for (ReceivedDeletedBlockInfo rdBlock : storageBlock.getBlocks()) {
+        repBuilder.addBlocks(PBHelper.convert(rdBlock));
+      }
+      builder.addBlocks(repBuilder.build());
+    }
     try {
-      rpcProxy.blockReceivedAndDeleted(NULL_CONTROLLER, req);
+      rpcProxy.blockReceivedAndDeleted(NULL_CONTROLLER, builder.build());
     } catch (ServiceException se) {
       throw ProtobufHelper.getRemoteException(se);
     }

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

@@ -40,6 +40,8 @@
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.RegisterDatanodeResponseProto;
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.ReportBadBlocksRequestProto;
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.ReportBadBlocksResponseProto;
+import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.StorageBlockReportProto;
+import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.StorageReceivedDeletedBlocksProto;
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.StorageReportProto;
 import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.DatanodeIDProto;
 import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.LocatedBlockProto;
@@ -49,8 +51,12 @@
 import org.apache.hadoop.hdfs.server.protocol.DatanodeCommand;
 import org.apache.hadoop.hdfs.server.protocol.DatanodeProtocol;
 import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
+import org.apache.hadoop.hdfs.server.protocol.DatanodeStorage;
 import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo;
 import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo;
+import org.apache.hadoop.hdfs.server.protocol.StorageBlockReport;
+import org.apache.hadoop.hdfs.server.protocol.StorageReceivedDeletedBlocks;
+import org.apache.hadoop.hdfs.server.protocol.StorageReport;
 import org.apache.hadoop.hdfs.server.protocol.UpgradeCommand;
 import org.apache.hadoop.ipc.ProtocolSignature;
 import org.apache.hadoop.ipc.RPC;
@@ -84,8 +90,12 @@ public RegisterDatanodeResponseProto registerDatanode(
     DatanodeRegistration registration = PBHelper.convert(request
         .getRegistration());
     DatanodeRegistration registrationResp;
+    DatanodeStorage[] storages = new DatanodeStorage[request.getStoragesCount()];
+    for (int i = 0; i < request.getStoragesCount(); i++) {
+      storages[i] = PBHelper.convert(request.getStorages(i));
+    }
     try {
-      registrationResp = impl.registerDatanode(registration);
+      registrationResp = impl.registerDatanode(registration, storages);
     } catch (IOException e) {
       throw new ServiceException(e);
     }
@@ -98,11 +108,17 @@ public HeartbeatResponseProto sendHeartbeat(RpcController controller,
       HeartbeatRequestProto request) throws ServiceException {
     DatanodeCommand[] cmds = null;
     try {
-      StorageReportProto report = request.getReports(0);
+      List<StorageReportProto> list = request.getReportsList();
+      StorageReport[] report = new StorageReport[list.size()];
+      int i = 0;
+      for (StorageReportProto p : list) {
+        report[i++] = new StorageReport(p.getStorageID(), p.getFailed(),
+            p.getCapacity(), p.getDfsUsed(), p.getRemaining(),
+            p.getBlockPoolUsed());
+      }
       cmds = impl.sendHeartbeat(PBHelper.convert(request.getRegistration()),
-          report.getCapacity(), report.getDfsUsed(), report.getRemaining(),
+          report, request.getXmitsInProgress(), request.getXceiverCount(),
-          report.getBlockPoolUsed(), request.getXmitsInProgress(),
+          request.getFailedVolumes());
-          request.getXceiverCount(), request.getFailedVolumes());
     } catch (IOException e) {
       throw new ServiceException(e);
     }
@@ -122,14 +138,21 @@ public HeartbeatResponseProto sendHeartbeat(RpcController controller,
   public BlockReportResponseProto blockReport(RpcController controller,
       BlockReportRequestProto request) throws ServiceException {
     DatanodeCommand cmd = null;
-    List<Long> blockIds = request.getReports(0).getBlocksList();
+    StorageBlockReport[] report = 
-    long[] blocks = new long[blockIds.size()];
+        new StorageBlockReport[request.getReportsCount()];
-    for (int i = 0; i < blockIds.size(); i++) {
+    
-      blocks[i] = blockIds.get(i);
+    int index = 0;
+    for (StorageBlockReportProto s : request.getReportsList()) {
+      List<Long> blockIds = s.getBlocksList();
+      long[] blocks = new long[blockIds.size()];
+      for (int i = 0; i < blockIds.size(); i++) {
+        blocks[i] = blockIds.get(i);
+      }
+      report[index++] = new StorageBlockReport(s.getStorageID(), blocks);
     }
     try {
       cmd = impl.blockReport(PBHelper.convert(request.getRegistration()),
-          request.getBlockPoolId(), blocks);
+          request.getBlockPoolId(), report);
     } catch (IOException e) {
       throw new ServiceException(e);
     }
@@ -145,12 +168,18 @@ public BlockReportResponseProto blockReport(RpcController controller,
   public BlockReceivedAndDeletedResponseProto blockReceivedAndDeleted(
       RpcController controller, BlockReceivedAndDeletedRequestProto request)
       throws ServiceException {
-    List<ReceivedDeletedBlockInfoProto> rdbip = request.getBlocks(0)
+    List<StorageReceivedDeletedBlocksProto> sBlocks = request.getBlocksList();
-        .getBlocksList();
+    StorageReceivedDeletedBlocks[] info = 
-    ReceivedDeletedBlockInfo[] info = 
+        new StorageReceivedDeletedBlocks[sBlocks.size()];
-        new ReceivedDeletedBlockInfo[rdbip.size()];
+    for (int i = 0; i < sBlocks.size(); i++) {
-    for (int i = 0; i < rdbip.size(); i++) {
+      StorageReceivedDeletedBlocksProto sBlock = sBlocks.get(i);
-      info[i] = PBHelper.convert(rdbip.get(i));
+      List<ReceivedDeletedBlockInfoProto> list = sBlock.getBlocksList();
+      ReceivedDeletedBlockInfo[] rdBlocks = 
+          new ReceivedDeletedBlockInfo[list.size()];
+      for (int j = 0; j < list.size(); j++) {
+        rdBlocks[j] = PBHelper.convert(list.get(j));
+      }
+      info[i] = new StorageReceivedDeletedBlocks(sBlock.getStorageID(), rdBlocks);
     }
     try {
       impl.blockReceivedAndDeleted(PBHelper.convert(request.getRegistration()),

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

@@ -26,6 +26,7 @@
 import org.apache.hadoop.fs.CreateFlag;
 import org.apache.hadoop.fs.FsServerDefaults;
 import org.apache.hadoop.fs.permission.FsPermission;
+import org.apache.hadoop.hdfs.server.protocol.StorageReport;
 import org.apache.hadoop.hdfs.protocol.Block;
 import org.apache.hadoop.hdfs.protocol.ClientProtocol;
 import org.apache.hadoop.hdfs.protocol.CorruptFileBlocks;
@@ -52,10 +53,13 @@
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.BlockRecoveryCommandProto;
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.DatanodeCommandProto;
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.DatanodeRegistrationProto;
+import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.DatanodeStorageProto;
+import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.DatanodeStorageProto.StorageState;
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.FinalizeCommandProto;
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.KeyUpdateCommandProto;
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.ReceivedDeletedBlockInfoProto;
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.RegisterCommandProto;
+import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.StorageReportProto;
 import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.UpgradeCommandProto;
 import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockKeyProto;
 import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockProto;
@@ -108,6 +112,8 @@
 import org.apache.hadoop.hdfs.server.protocol.DatanodeCommand;
 import org.apache.hadoop.hdfs.server.protocol.DatanodeProtocol;
 import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
+import org.apache.hadoop.hdfs.server.protocol.DatanodeStorage;
+import org.apache.hadoop.hdfs.server.protocol.DatanodeStorage.State;
 import org.apache.hadoop.hdfs.server.protocol.FinalizeCommand;
 import org.apache.hadoop.hdfs.server.protocol.KeyUpdateCommand;
 import org.apache.hadoop.hdfs.server.protocol.NamenodeCommand;
@@ -118,6 +124,7 @@
 import org.apache.hadoop.hdfs.server.protocol.RemoteEditLog;
 import org.apache.hadoop.hdfs.server.protocol.RemoteEditLogManifest;
 import org.apache.hadoop.hdfs.server.protocol.BlocksWithLocations.BlockWithLocations;
+import org.apache.hadoop.hdfs.server.protocol.StorageReport;
 import org.apache.hadoop.hdfs.server.protocol.UpgradeCommand;
 import org.apache.hadoop.io.EnumSetWritable;
 import org.apache.hadoop.io.Text;
@@ -1236,4 +1243,41 @@ public static ContentSummaryProto convert(ContentSummary cs) {
         setSpaceQuota(cs.getSpaceQuota()).
         build();
   }
+
+  public static DatanodeStorageProto convert(DatanodeStorage s) {
+    return DatanodeStorageProto.newBuilder()
+        .setState(PBHelper.convert(s.getState()))
+        .setStorageID(s.getStorageID()).build();
+  }
+
+  private static StorageState convert(State state) {
+    switch(state) {
+    case READ_ONLY:
+      return StorageState.READ_ONLY;
+    case NORMAL:
+    default:
+      return StorageState.NORMAL;
+    }
+  }
+
+  public static DatanodeStorage convert(DatanodeStorageProto s) {
+    return new DatanodeStorage(s.getStorageID(), PBHelper.convert(s.getState()));
+  }
+
+  private static State convert(StorageState state) {
+    switch(state) {
+    case READ_ONLY:
+      return DatanodeStorage.State.READ_ONLY;
+    case NORMAL:
+    default:
+      return DatanodeStorage.State.NORMAL;
+    }
+  }
+
+  public static StorageReportProto convert(StorageReport r) {
+    return StorageReportProto.newBuilder()
+        .setBlockPoolUsed(r.getBlockPoolUsed()).setCapacity(r.getCapacity())
+        .setDfsUsed(r.getDfsUsed()).setRemaining(r.getRemaining())
+        .setStorageID(r.getStorageID()).build();
+  }
 }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPOfferService.java

@@ -37,7 +37,6 @@
 import org.apache.hadoop.hdfs.protocol.LocatedBlock;
 import org.apache.hadoop.hdfs.protocol.UnregisteredNodeException;
 import org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolClientSideTranslatorPB;
-import org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolPB;
 import org.apache.hadoop.hdfs.server.common.IncorrectVersionException;
 import org.apache.hadoop.hdfs.server.common.Storage;
 import org.apache.hadoop.hdfs.server.namenode.FSNamesystem;
@@ -47,14 +46,17 @@
 import org.apache.hadoop.hdfs.server.protocol.DatanodeCommand;
 import org.apache.hadoop.hdfs.server.protocol.DatanodeProtocol;
 import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
+import org.apache.hadoop.hdfs.server.protocol.DatanodeStorage;
 import org.apache.hadoop.hdfs.server.protocol.DisallowedDatanodeException;
 import org.apache.hadoop.hdfs.server.protocol.FinalizeCommand;
 import org.apache.hadoop.hdfs.server.protocol.KeyUpdateCommand;
 import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo;
 import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo;
+import org.apache.hadoop.hdfs.server.protocol.StorageBlockReport;
+import org.apache.hadoop.hdfs.server.protocol.StorageReceivedDeletedBlocks;
+import org.apache.hadoop.hdfs.server.protocol.StorageReport;
 import org.apache.hadoop.hdfs.server.protocol.UpgradeCommand;
 import org.apache.hadoop.io.IOUtils;
-import org.apache.hadoop.ipc.RPC;
 import org.apache.hadoop.ipc.RemoteException;
 import org.apache.hadoop.util.StringUtils;
 
@@ -295,8 +297,10 @@ private void reportReceivedDeletedBlocks() throws IOException {
       }
     }
     if (receivedAndDeletedBlockArray != null) {
+      StorageReceivedDeletedBlocks[] report = { new StorageReceivedDeletedBlocks(
+          bpRegistration.getStorageID(), receivedAndDeletedBlockArray) };
       bpNamenode.blockReceivedAndDeleted(bpRegistration, getBlockPoolId(),
-          receivedAndDeletedBlockArray);
+          report);
       synchronized (receivedAndDeletedBlockList) {
         for (int i = 0; i < receivedAndDeletedBlockArray.length; i++) {
           receivedAndDeletedBlockList.remove(receivedAndDeletedBlockArray[i]);
@@ -365,8 +369,9 @@ DatanodeCommand blockReport() throws IOException {
 
       // Send block report
       long brSendStartTime = now();
-      cmd = bpNamenode.blockReport(bpRegistration, getBlockPoolId(), bReport
+      StorageBlockReport[] report = { new StorageBlockReport(
-          .getBlockListAsLongs());
+          bpRegistration.getStorageID(), bReport.getBlockListAsLongs()) };
+      cmd = bpNamenode.blockReport(bpRegistration, getBlockPoolId(), report);
 
       // Log the block report processing stats from Datanode perspective
       long brSendCost = now() - brSendStartTime;
@@ -398,11 +403,11 @@ DatanodeCommand blockReport() throws IOException {
   
   
   DatanodeCommand [] sendHeartBeat() throws IOException {
-    return bpNamenode.sendHeartbeat(bpRegistration,
+    // reports number of failed volumes
-        dn.data.getCapacity(),
+    StorageReport[] report = { new StorageReport(bpRegistration.getStorageID(),
-        dn.data.getDfsUsed(),
+        false, dn.data.getCapacity(), dn.data.getDfsUsed(),
-        dn.data.getRemaining(),
+        dn.data.getRemaining(), dn.data.getBlockPoolUsed(getBlockPoolId())) };
-        dn.data.getBlockPoolUsed(getBlockPoolId()),
+    return bpNamenode.sendHeartbeat(bpRegistration, report,
         dn.xmitsInProgress.get(),
         dn.getXceiverCount(), dn.data.getNumFailedVolumes());
   }
@@ -572,7 +577,8 @@ void register() throws IOException {
     while (shouldRun()) {
       try {
         // Use returned registration from namenode with updated machine name.
-        bpRegistration = bpNamenode.registerDatanode(bpRegistration);
+        bpRegistration = bpNamenode.registerDatanode(bpRegistration,
+            new DatanodeStorage[0]);
         break;
       } catch(SocketTimeoutException e) {  // namenode is busy
         LOG.info("Problem connecting to server: " + nnAddr);

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

@@ -87,6 +87,7 @@
 import org.apache.hadoop.hdfs.server.protocol.DatanodeCommand;
 import org.apache.hadoop.hdfs.server.protocol.DatanodeProtocol;
 import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
+import org.apache.hadoop.hdfs.server.protocol.DatanodeStorage;
 import org.apache.hadoop.hdfs.server.protocol.FinalizeCommand;
 import org.apache.hadoop.hdfs.server.protocol.NamenodeCommand;
 import org.apache.hadoop.hdfs.server.protocol.NamenodeProtocol;
@@ -94,8 +95,10 @@
 import org.apache.hadoop.hdfs.server.protocol.NamenodeRegistration;
 import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo;
 import org.apache.hadoop.hdfs.server.protocol.NodeRegistration;
-import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo;
 import org.apache.hadoop.hdfs.server.protocol.RemoteEditLogManifest;
+import org.apache.hadoop.hdfs.server.protocol.StorageBlockReport;
+import org.apache.hadoop.hdfs.server.protocol.StorageReceivedDeletedBlocks;
+import org.apache.hadoop.hdfs.server.protocol.StorageReport;
 import org.apache.hadoop.hdfs.server.protocol.UpgradeCommand;
 import org.apache.hadoop.io.EnumSetWritable;
 import org.apache.hadoop.io.Text;
@@ -841,8 +844,8 @@ public String getLinkTarget(String path) throws IOException {
 
 
   @Override // DatanodeProtocol
-  public DatanodeRegistration registerDatanode(DatanodeRegistration nodeReg)
+  public DatanodeRegistration registerDatanode(DatanodeRegistration nodeReg,
-      throws IOException {
+      DatanodeStorage[] storages) throws IOException {
     verifyVersion(nodeReg.getVersion());
     namesystem.registerDatanode(nodeReg);
       
@@ -851,19 +854,20 @@ public DatanodeRegistration registerDatanode(DatanodeRegistration nodeReg)
 
   @Override // DatanodeProtocol
   public DatanodeCommand[] sendHeartbeat(DatanodeRegistration nodeReg,
-      long capacity, long dfsUsed, long remaining, long blockPoolUsed,
+      StorageReport[] report, int xmitsInProgress, int xceiverCount,
-      int xmitsInProgress, int xceiverCount, int failedVolumes)
+      int failedVolumes) throws IOException {
-      throws IOException {
     verifyRequest(nodeReg);
-    return namesystem.handleHeartbeat(nodeReg, capacity, dfsUsed, remaining,
+    return namesystem.handleHeartbeat(nodeReg, report[0].getCapacity(),
-        blockPoolUsed, xceiverCount, xmitsInProgress, failedVolumes);
+        report[0].getDfsUsed(), report[0].getRemaining(),
+        report[0].getBlockPoolUsed(), xceiverCount, xmitsInProgress,
+        failedVolumes);
   }
 
   @Override // DatanodeProtocol
   public DatanodeCommand blockReport(DatanodeRegistration nodeReg,
-      String poolId, long[] blocks) throws IOException {
+      String poolId, StorageBlockReport[] reports) throws IOException {
     verifyRequest(nodeReg);
-    BlockListAsLongs blist = new BlockListAsLongs(blocks);
+    BlockListAsLongs blist = new BlockListAsLongs(reports[0].getBlocks());
     if(stateChangeLog.isDebugEnabled()) {
       stateChangeLog.debug("*BLOCK* NameNode.blockReport: "
            + "from " + nodeReg.getName() + " " + blist.getNumberOfBlocks()
@@ -878,7 +882,7 @@ public DatanodeCommand blockReport(DatanodeRegistration nodeReg,
 
   @Override // DatanodeProtocol
   public void blockReceivedAndDeleted(DatanodeRegistration nodeReg, String poolId,
-      ReceivedDeletedBlockInfo[] receivedAndDeletedBlocks) throws IOException {
+      StorageReceivedDeletedBlocks[] receivedAndDeletedBlocks) throws IOException {
     verifyRequest(nodeReg);
     if(stateChangeLog.isDebugEnabled()) {
       stateChangeLog.debug("*BLOCK* NameNode.blockReceivedAndDeleted: "
@@ -886,7 +890,7 @@ public void blockReceivedAndDeleted(DatanodeRegistration nodeReg, String poolId,
           +" blocks.");
     }
     namesystem.getBlockManager().blockReceivedAndDeleted(
-        nodeReg, poolId, receivedAndDeletedBlocks);
+        nodeReg, poolId, receivedAndDeletedBlocks[0].getBlocks());
   }
 
   @Override // DatanodeProtocol

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/protocol/DatanodeProtocol.java

@@ -80,13 +80,16 @@ public interface DatanodeProtocol extends VersionedProtocol {
    * Register Datanode.
    *
    * @see org.apache.hadoop.hdfs.server.namenode.FSNamesystem#registerDatanode(DatanodeRegistration)
-   * 
+   * @param registration datanode registration information
+   * @param storages list of storages on the datanode``
    * @return updated {@link org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration}, which contains 
    * new storageID if the datanode did not have one and
    * registration ID for further communication.
    */
-  public DatanodeRegistration registerDatanode(DatanodeRegistration registration
+  public DatanodeRegistration registerDatanode(
-                                       ) throws IOException;
+      DatanodeRegistration registration, DatanodeStorage[] storages)
+      throws IOException;
+  
   /**
    * sendHeartbeat() tells the NameNode that the DataNode is still
    * alive and well.  Includes some status info, too. 
@@ -95,19 +98,14 @@ public DatanodeRegistration registerDatanode(DatanodeRegistration registration
    * A DatanodeCommand tells the DataNode to invalidate local block(s), 
    * or to copy them to other DataNodes, etc.
    * @param registration datanode registration information
-   * @param capacity total storage capacity available at the datanode
+   * @param reports utilization report per storage
-   * @param dfsUsed storage used by HDFS
-   * @param remaining remaining storage available for HDFS
-   * @param blockPoolUsed storage used by the block pool
    * @param xmitsInProgress number of transfers from this datanode to others
    * @param xceiverCount number of active transceiver threads
    * @param failedVolumes number of failed volumes
    * @throws IOException on error
    */
   public DatanodeCommand[] sendHeartbeat(DatanodeRegistration registration,
-                                       long capacity,
+                                       StorageReport[] reports,
-                                       long dfsUsed, long remaining,
-                                       long blockPoolUsed,
                                        int xmitsInProgress,
                                        int xceiverCount,
                                        int failedVolumes) throws IOException;
@@ -120,7 +118,7 @@ public DatanodeCommand[] sendHeartbeat(DatanodeRegistration registration,
    * infrequently afterwards.
    * @param registration
    * @param poolId - the block pool ID for the blocks
-   * @param blocks - the block list as an array of longs.
+   * @param reports - report of blocks per storage
    *     Each block is represented as 2 longs.
    *     This is done instead of Block[] to reduce memory used by block reports.
    *     
@@ -128,8 +126,7 @@ public DatanodeCommand[] sendHeartbeat(DatanodeRegistration registration,
    * @throws IOException
    */
   public DatanodeCommand blockReport(DatanodeRegistration registration,
-                                     String poolId,
+      String poolId, StorageBlockReport[] reports) throws IOException;
-                                     long[] blocks) throws IOException;
     
   /**
    * blockReceivedAndDeleted() allows the DataNode to tell the NameNode about
@@ -143,7 +140,7 @@ public DatanodeCommand blockReport(DatanodeRegistration registration,
    */
   public void blockReceivedAndDeleted(DatanodeRegistration registration,
                             String poolId,
-                            ReceivedDeletedBlockInfo[] receivedAndDeletedBlocks)
+                            StorageReceivedDeletedBlocks[] rcvdAndDeletedBlocks)
                             throws IOException;
 
   /**

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/protocol/DatanodeStorage.java

@@ -0,0 +1,44 @@
+/**
+ * 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.protocol;
+
+/**
+ * Class capatures information about a storage in Datanode
+ */
+public class DatanodeStorage {
+  public enum State {
+    NORMAL,
+    READ_ONLY
+  }
+  
+  private final String storageID;
+  private final State state;
+  
+  public DatanodeStorage(String sid, State s) {
+    storageID = sid;
+    state = s;
+  }
+
+  public String getStorageID() {
+    return storageID;
+  }
+
+  public State getState() {
+    return state;
+  }
+}

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/protocol/StorageBlockReport.java

@@ -0,0 +1,40 @@
+/**
+ * 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.protocol;
+
+/**
+ * Block report for a Datanode storage
+ */
+public class StorageBlockReport {
+  private final String storageID;
+  private final long[] blocks;
+  
+  public StorageBlockReport(String sid, long[] blocks) {
+    this.storageID = sid;
+    this.blocks = blocks;
+  }
+
+  public String getStorageID() {
+    return storageID;
+  }
+
+  public long[] getBlocks() {
+    return blocks;
+  }
+}

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/protocol/StorageReceivedDeletedBlocks.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.protocol;
+
+/**
+ * Report of block received and deleted per Datanode
+ * storage.
+ */
+public class StorageReceivedDeletedBlocks {
+  private final String storageID;
+  private final ReceivedDeletedBlockInfo[] blocks;
+  
+  public String getStorageID() {
+    return storageID;
+  }
+
+  public ReceivedDeletedBlockInfo[] getBlocks() {
+    return blocks;
+  }
+
+  public StorageReceivedDeletedBlocks(final String storageID,
+      final ReceivedDeletedBlockInfo[] blocks) {
+    this.storageID = storageID;
+    this.blocks = blocks;
+  }
+}

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/protocol/StorageReport.java

@@ -0,0 +1,47 @@
+package org.apache.hadoop.hdfs.server.protocol;
+
+/**
+ * Utilization report for a Datanode storage
+ */
+public class StorageReport {
+  private final String storageID;
+  private final boolean failed;
+  private final long capacity;
+  private final long dfsUsed;
+  private final long remaining;
+  private final long blockPoolUsed;
+  
+  public StorageReport(String sid, boolean failed, long capacity, long dfsUsed,
+      long remaining, long bpUsed) {
+    this.storageID = sid;
+    this.failed = failed;
+    this.capacity = capacity;
+    this.dfsUsed = dfsUsed;
+    this.remaining = remaining;
+    this.blockPoolUsed = bpUsed;
+  }
+
+  public String getStorageID() {
+    return storageID;
+  }
+
+  public boolean isFailed() {
+    return failed;
+  }
+
+  public long getCapacity() {
+    return capacity;
+  }
+
+  public long getDfsUsed() {
+    return dfsUsed;
+  }
+
+  public long getRemaining() {
+    return remaining;
+  }
+
+  public long getBlockPoolUsed() {
+    return blockPoolUsed;
+  }
+}

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestBlockReport.java

@@ -40,6 +40,7 @@
 import org.apache.hadoop.hdfs.server.protocol.DatanodeCommand;
 import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
 import org.apache.hadoop.io.IOUtils;
+import org.apache.hadoop.hdfs.server.protocol.StorageBlockReport;
 import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.test.GenericTestUtils.DelayAnswer;
 import org.apache.log4j.Level;
@@ -146,8 +147,9 @@ public void blockReport_01() throws IOException {
     DataNode dn = cluster.getDataNodes().get(DN_N0);
     String poolId = cluster.getNamesystem().getBlockPoolId();
     DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
-    cluster.getNameNodeRpc().blockReport(dnR, poolId,
+    StorageBlockReport[] report = { new StorageBlockReport(dnR.getStorageID(),
-      new BlockListAsLongs(blocks, null).getBlockListAsLongs());
+        new BlockListAsLongs(blocks, null).getBlockListAsLongs()) };
+    cluster.getNameNodeRpc().blockReport(dnR, poolId, report);
 
     List<LocatedBlock> blocksAfterReport =
       DFSTestUtil.getAllBlocks(fs.open(filePath));
@@ -180,7 +182,7 @@ public void blockReport_02() throws IOException {
 
     Path filePath = new Path("/" + METHOD_NAME + ".dat");
     DFSTestUtil.createFile(fs, filePath,
-      (long) FILE_SIZE, REPL_FACTOR, rand.nextLong());
+      FILE_SIZE, REPL_FACTOR, rand.nextLong());
 
     // mock around with newly created blocks and delete some
     File dataDir = new File(cluster.getDataDirectory());
@@ -226,8 +228,9 @@ public void blockReport_02() throws IOException {
     DataNode dn = cluster.getDataNodes().get(DN_N0);
     String poolId = cluster.getNamesystem().getBlockPoolId();
     DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
-    cluster.getNameNodeRpc().blockReport(dnR, poolId,
+    StorageBlockReport[] report = { new StorageBlockReport(dnR.getStorageID(),
-      new BlockListAsLongs(blocks, null).getBlockListAsLongs());
+        new BlockListAsLongs(blocks, null).getBlockListAsLongs()) };
+    cluster.getNameNodeRpc().blockReport(dnR, poolId, report);
 
     BlockManagerTestUtil.getComputedDatanodeWork(cluster.getNamesystem()
         .getBlockManager());
@@ -266,9 +269,10 @@ public void blockReport_03() throws IOException {
     DataNode dn = cluster.getDataNodes().get(DN_N0);
     String poolId = cluster.getNamesystem().getBlockPoolId();
     DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
+    StorageBlockReport[] report = { new StorageBlockReport(dnR.getStorageID(),
+        new BlockListAsLongs(blocks, null).getBlockListAsLongs()) };
     DatanodeCommand dnCmd =
-      cluster.getNameNodeRpc().blockReport(dnR, poolId,
+      cluster.getNameNodeRpc().blockReport(dnR, poolId, report);
-        new BlockListAsLongs(blocks, null).getBlockListAsLongs());
     if(LOG.isDebugEnabled()) {
       LOG.debug("Got the command: " + dnCmd);
     }
@@ -284,9 +288,8 @@ public void blockReport_03() throws IOException {
    * This test isn't a representative case for BlockReport
    * The empty method is going to be left here to keep the naming
    * of the test plan in synch with the actual implementation
-   * @throws IOException in case of errors
    */
-  public void blockReport_04() throws IOException {
+  public void blockReport_04() {
   }
 
   // Client requests new block from NN. The test corrupts this very block
@@ -295,7 +298,7 @@ public void blockReport_04() throws IOException {
   // BlockScanner which is out of scope of this test
   // Keeping the name to be in synch with the test plan
   //
-  public void blockReport_05() throws IOException {
+  public void blockReport_05() {
   }
 
   /**
@@ -319,8 +322,9 @@ public void blockReport_06() throws IOException {
     DataNode dn = cluster.getDataNodes().get(DN_N1);
     String poolId = cluster.getNamesystem().getBlockPoolId();
     DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
-    cluster.getNameNodeRpc().blockReport(dnR, poolId,
+    StorageBlockReport[] report = { new StorageBlockReport(dnR.getStorageID(),
-        new BlockListAsLongs(blocks, null).getBlockListAsLongs());
+        new BlockListAsLongs(blocks, null).getBlockListAsLongs()) };
+    cluster.getNameNodeRpc().blockReport(dnR, poolId, report);
     printStats();
     assertEquals("Wrong number of PendingReplication Blocks",
       0, cluster.getNamesystem().getUnderReplicatedBlocks());
@@ -368,8 +372,9 @@ public void blockReport_07() throws IOException {
     DataNode dn = cluster.getDataNodes().get(DN_N1);
     String poolId = cluster.getNamesystem().getBlockPoolId();
     DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
-    cluster.getNameNodeRpc().blockReport(dnR, poolId,
+    StorageBlockReport[] report = { new StorageBlockReport(dnR.getStorageID(),
-        new BlockListAsLongs(blocks, null).getBlockListAsLongs());
+        new BlockListAsLongs(blocks, null).getBlockListAsLongs()) };
+    cluster.getNameNodeRpc().blockReport(dnR, poolId, report);
     printStats();
     assertEquals("Wrong number of Corrupted blocks",
       1, cluster.getNamesystem().getCorruptReplicaBlocks() +
@@ -390,8 +395,9 @@ public void blockReport_07() throws IOException {
       LOG.debug("Done corrupting length of " + corruptedBlock.getBlockName());
     }
     
-    cluster.getNameNodeRpc().blockReport(dnR, poolId,
+    report[0] = new StorageBlockReport(dnR.getStorageID(),
         new BlockListAsLongs(blocks, null).getBlockListAsLongs());
+    cluster.getNameNodeRpc().blockReport(dnR, poolId, report);
     printStats();
 
     assertEquals("Wrong number of Corrupted blocks",
@@ -440,8 +446,9 @@ public void blockReport_08() throws IOException {
       DataNode dn = cluster.getDataNodes().get(DN_N1);
       String poolId = cluster.getNamesystem().getBlockPoolId();
       DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
-      cluster.getNameNodeRpc().blockReport(dnR, poolId,
+      StorageBlockReport[] report = { new StorageBlockReport(dnR.getStorageID(),
-          new BlockListAsLongs(blocks, null).getBlockListAsLongs());
+          new BlockListAsLongs(blocks, null).getBlockListAsLongs()) };
+      cluster.getNameNodeRpc().blockReport(dnR, poolId, report);
       printStats();
       assertEquals("Wrong number of PendingReplication blocks",
         blocks.size(), cluster.getNamesystem().getPendingReplicationBlocks());
@@ -486,8 +493,9 @@ public void blockReport_09() throws IOException {
       DataNode dn = cluster.getDataNodes().get(DN_N1);
       String poolId = cluster.getNamesystem().getBlockPoolId();
       DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
-      cluster.getNameNodeRpc().blockReport(dnR, poolId,
+      StorageBlockReport[] report = { new StorageBlockReport(dnR.getStorageID(),
-          new BlockListAsLongs(blocks, null).getBlockListAsLongs());
+          new BlockListAsLongs(blocks, null).getBlockListAsLongs()) };
+      cluster.getNameNodeRpc().blockReport(dnR, poolId, report);
       printStats();
       assertEquals("Wrong number of PendingReplication blocks",
         2, cluster.getNamesystem().getPendingReplicationBlocks());
@@ -550,7 +558,7 @@ protected Object passThrough(InvocationOnMock invocation)
         .when(spy).blockReport(
           Mockito.<DatanodeRegistration>anyObject(),
           Mockito.anyString(),
-          Mockito.<long[]>anyObject());
+          Mockito.<StorageBlockReport[]>anyObject());
       
       // Force a block report to be generated. The block report will have
       // an RBW replica in it. Wait for the RPC to be sent, but block
@@ -638,8 +646,7 @@ private void waitForTempReplica(Block bl, int DN_N1) throws IOException {
   // Write file and start second data node.
   private ArrayList<Block> writeFile(final String METHOD_NAME,
                                                final long fileSize,
-                                               Path filePath)
+                                               Path filePath) {
-    throws IOException {
     ArrayList<Block> blocks = null;
     try {
       REPL_FACTOR = 2;

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeVolumeFailure.java

@@ -42,6 +42,7 @@
 import org.apache.hadoop.hdfs.server.namenode.FSNamesystem;
 import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
 import org.apache.hadoop.hdfs.server.protocol.NamenodeProtocols;
+import org.apache.hadoop.hdfs.server.protocol.StorageBlockReport;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.net.NetUtils;
 
@@ -144,8 +145,9 @@ public void testVolumeFailure() throws IOException {
     DataNode dn = cluster.getDataNodes().get(1); //corresponds to dir data3
     String bpid = cluster.getNamesystem().getBlockPoolId();
     DatanodeRegistration dnR = dn.getDNRegistrationForBP(bpid);
-    long[] bReport = dn.getFSDataset().getBlockReport(bpid).getBlockListAsLongs();
+    StorageBlockReport[] report = { new StorageBlockReport(dnR.getStorageID(),
-    cluster.getNameNodeRpc().blockReport(dnR, bpid, bReport);
+        dn.getFSDataset().getBlockReport(bpid).getBlockListAsLongs()) };
+    cluster.getNameNodeRpc().blockReport(dnR, bpid, report);
 
     // verify number of blocks and files...
     verify(filename, filesize);

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

@@ -25,8 +25,6 @@
 import java.util.EnumSet;
 import java.util.List;
 
-import javax.security.auth.login.LoginException;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.commons.logging.impl.Log4JLogger;
@@ -46,9 +44,13 @@
 import org.apache.hadoop.hdfs.server.protocol.DatanodeCommand;
 import org.apache.hadoop.hdfs.server.protocol.DatanodeProtocol;
 import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
+import org.apache.hadoop.hdfs.server.protocol.DatanodeStorage;
 import org.apache.hadoop.hdfs.server.protocol.NamenodeProtocols;
 import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo;
 import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo;
+import org.apache.hadoop.hdfs.server.protocol.StorageBlockReport;
+import org.apache.hadoop.hdfs.server.protocol.StorageReceivedDeletedBlocks;
+import org.apache.hadoop.hdfs.server.protocol.StorageReport;
 import org.apache.hadoop.hdfs.HdfsConfiguration;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.io.EnumSetWritable;
@@ -104,7 +106,7 @@ public class NNThroughputBenchmark {
   static NameNode nameNode;
   static NamenodeProtocols nameNodeProto;
 
-  NNThroughputBenchmark(Configuration conf) throws IOException, LoginException {
+  NNThroughputBenchmark(Configuration conf) throws IOException {
     config = conf;
     // We do not need many handlers, since each thread simulates a handler
     // by calling name-node methods directly
@@ -125,7 +127,7 @@ public class NNThroughputBenchmark {
     nameNodeProto = nameNode.getRpcServer();
   }
 
-  void close() throws IOException {
+  void close() {
     nameNode.stop();
   }
 
@@ -795,7 +797,10 @@ void register() throws IOException {
       dnRegistration.setStorageInfo(new DataStorage(nsInfo, ""));
       DataNode.setNewStorageID(dnRegistration);
       // register datanode
-      dnRegistration = nameNodeProto.registerDatanode(dnRegistration);
+      
+      DatanodeStorage[] storages = { new DatanodeStorage(
+          dnRegistration.getStorageID(), DatanodeStorage.State.NORMAL) };
+      dnRegistration = nameNodeProto.registerDatanode(dnRegistration, storages);
     }
 
     /**
@@ -805,8 +810,10 @@ void register() throws IOException {
     void sendHeartbeat() throws IOException {
       // register datanode
       // TODO:FEDERATION currently a single block pool is supported
+      StorageReport[] rep = { new StorageReport(dnRegistration.getStorageID(),
+          false, DF_CAPACITY, DF_USED, DF_CAPACITY - DF_USED, DF_USED) };
       DatanodeCommand[] cmds = nameNodeProto.sendHeartbeat(dnRegistration,
-          DF_CAPACITY, DF_USED, DF_CAPACITY - DF_USED, DF_USED, 0, 0, 0);
+          rep, 0, 0, 0);
       if(cmds != null) {
         for (DatanodeCommand cmd : cmds ) {
           if(LOG.isDebugEnabled()) {
@@ -849,9 +856,10 @@ public int compareTo(String name) {
     @SuppressWarnings("unused") // keep it for future blockReceived benchmark
     int replicateBlocks() throws IOException {
       // register datanode
-      // TODO:FEDERATION currently a single block pool is supported
+      StorageReport[] rep = { new StorageReport(dnRegistration.getStorageID(),
+          false, DF_CAPACITY, DF_USED, DF_CAPACITY - DF_USED, DF_USED) };
       DatanodeCommand[] cmds = nameNodeProto.sendHeartbeat(dnRegistration,
-          DF_CAPACITY, DF_USED, DF_CAPACITY - DF_USED, DF_USED, 0, 0, 0);
+          rep, 0, 0, 0);
       if (cmds != null) {
         for (DatanodeCommand cmd : cmds) {
           if (cmd.getAction() == DatanodeProtocol.DNA_TRANSFER) {
@@ -881,10 +889,12 @@ private int transferBlocks( Block blocks[],
           receivedDNReg.setStorageInfo(
                           new DataStorage(nsInfo, dnInfo.getStorageID()));
           receivedDNReg.setInfoPort(dnInfo.getInfoPort());
+          ReceivedDeletedBlockInfo[] rdBlocks = { new ReceivedDeletedBlockInfo(
+                  blocks[i], DataNode.EMPTY_DEL_HINT) };
+          StorageReceivedDeletedBlocks[] report = { new StorageReceivedDeletedBlocks(
+              receivedDNReg.getStorageID(), rdBlocks) };
           nameNodeProto.blockReceivedAndDeleted(receivedDNReg, nameNode
-              .getNamesystem().getBlockPoolId(),
+              .getNamesystem().getBlockPoolId(), report);
-              new ReceivedDeletedBlockInfo[] { new ReceivedDeletedBlockInfo(
-                  blocks[i], DataNode.EMPTY_DEL_HINT) });
         }
       }
       return blocks.length;
@@ -916,7 +926,7 @@ class BlockReportStats extends OperationStatsBase {
       config.setLong(DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY, 3 * 60);
       parseArguments(args);
       // adjust replication to the number of data-nodes
-      this.replication = (short)Math.min((int)replication, getNumDatanodes());
+      this.replication = (short)Math.min(replication, getNumDatanodes());
     }
 
     /**
@@ -996,10 +1006,12 @@ private ExtendedBlock addBlocks(String fileName, String clientName)
         for(DatanodeInfo dnInfo : loc.getLocations()) {
           int dnIdx = Arrays.binarySearch(datanodes, dnInfo.getName());
           datanodes[dnIdx].addBlock(loc.getBlock().getLocalBlock());
+          ReceivedDeletedBlockInfo[] rdBlocks = { new ReceivedDeletedBlockInfo(
+              loc.getBlock().getLocalBlock(), "") };
+          StorageReceivedDeletedBlocks[] report = { new StorageReceivedDeletedBlocks(
+              datanodes[dnIdx].dnRegistration.getStorageID(), rdBlocks) };
           nameNodeProto.blockReceivedAndDeleted(datanodes[dnIdx].dnRegistration, loc
-              .getBlock().getBlockPoolId(),
+              .getBlock().getBlockPoolId(), report);
-              new ReceivedDeletedBlockInfo[] { new ReceivedDeletedBlockInfo(loc
-                  .getBlock().getLocalBlock(), "") });
         }
       }
       return prevBlock;
@@ -1016,8 +1028,10 @@ long executeOp(int daemonId, int inputIdx, String ignore) throws IOException {
       assert daemonId < numThreads : "Wrong daemonId.";
       TinyDatanode dn = datanodes[daemonId];
       long start = System.currentTimeMillis();
+      StorageBlockReport[] report = { new StorageBlockReport(
+          dn.dnRegistration.getStorageID(), dn.getBlockReportList()) };
       nameNodeProto.blockReport(dn.dnRegistration, nameNode.getNamesystem()
-          .getBlockPoolId(), dn.getBlockReportList());
+          .getBlockPoolId(), report);
       long end = System.currentTimeMillis();
       return end-start;
     }

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

@@ -38,6 +38,9 @@
 import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
 import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo;
 import org.apache.hadoop.hdfs.server.protocol.RegisterCommand;
+import org.apache.hadoop.hdfs.server.protocol.StorageBlockReport;
+import org.apache.hadoop.hdfs.server.protocol.StorageReceivedDeletedBlocks;
+import org.apache.hadoop.hdfs.server.protocol.StorageReport;
 import org.junit.After;
 import org.junit.Test;
 
@@ -108,19 +111,22 @@ public void testDeadDatanode() throws Exception {
     
     ReceivedDeletedBlockInfo[] blocks = { new ReceivedDeletedBlockInfo(
         new Block(0), "") };
+    StorageReceivedDeletedBlocks[] storageBlocks = { 
+        new StorageReceivedDeletedBlocks(reg.getStorageID(), blocks) };
     
     // Ensure blockReceived call from dead datanode is rejected with IOException
     try {
-      dnp.blockReceivedAndDeleted(reg, poolId, blocks);
+      dnp.blockReceivedAndDeleted(reg, poolId, storageBlocks);
       Assert.fail("Expected IOException is not thrown");
     } catch (IOException ex) {
       // Expected
     }
 
     // Ensure blockReport from dead datanode is rejected with IOException
-    long[] blockReport = new long[] { 0L, 0L, 0L };
+    StorageBlockReport[] report = { new StorageBlockReport(reg.getStorageID(),
+        new long[] { 0L, 0L, 0L }) };
     try {
-      dnp.blockReport(reg, poolId, blockReport);
+      dnp.blockReport(reg, poolId, report);
       Assert.fail("Expected IOException is not thrown");
     } catch (IOException ex) {
       // Expected
@@ -128,7 +134,9 @@ public void testDeadDatanode() throws Exception {
 
     // Ensure heartbeat from dead datanode is rejected with a command
     // that asks datanode to register again
-    DatanodeCommand[] cmd = dnp.sendHeartbeat(reg, 0, 0, 0, 0, 0, 0, 0);
+    StorageReport[] rep = { new StorageReport(reg.getStorageID(), false, 0, 0,
+        0, 0) };
+    DatanodeCommand[] cmd = dnp.sendHeartbeat(reg, rep, 0, 0, 0);
     Assert.assertEquals(1, cmd.length);
     Assert.assertEquals(cmd[0].getAction(), RegisterCommand.REGISTER
         .getAction());