HDFS-16757. Add a new method copyBlockCrossNamespace to DataNode

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSClient.java

@@ -28,6 +28,7 @@
 import static org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.DFS_CLIENT_TEST_DROP_NAMENODE_RESPONSE_NUM_DEFAULT;
 import static org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.DFS_CLIENT_TEST_DROP_NAMENODE_RESPONSE_NUM_KEY;
 
+import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
@@ -1956,6 +1957,26 @@ protected IOStreamPair connectToDN(DatanodeInfo dn, int timeout,
         socketFactory, getConf().isConnectToDnViaHostname(), this, blockToken);
   }
 
+  protected void copyBlockCrossNamespace(ExtendedBlock sourceBlk,
+      Token<BlockTokenIdentifier> sourceBlockToken, DatanodeInfo sourceDatanode,
+      ExtendedBlock targetBlk, Token<BlockTokenIdentifier> targetBlockToken,
+      DatanodeInfo targetDatanode) throws IOException {
+    IOStreamPair pair =
+        DFSUtilClient.connectToDN(sourceDatanode, getConf().getSocketTimeout(), conf, saslClient,
+            socketFactory, getConf().isConnectToDnViaHostname(), this, sourceBlockToken);
+
+    new Sender((DataOutputStream) pair.out).copyBlockCrossNamespace(sourceBlk, sourceBlockToken,
+        targetBlk, targetBlockToken, targetDatanode);
+
+    pair.out.flush();
+
+    DataInputStream reply = new DataInputStream(pair.in);
+    BlockOpResponseProto proto = BlockOpResponseProto.parseFrom(PBHelperClient.vintPrefixed(reply));
+    DataTransferProtoUtil.checkBlockOpStatus(proto,
+        "copyBlockCrossNamespace " + sourceBlk + " to " + targetBlk + " from " + sourceDatanode
+            + " to " + targetDatanode);
+  }
+
   /**
    * Infer the checksum type for a replica by sending an OP_READ_BLOCK
    * for the first byte of that replica. This is used for compatibility

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java

@@ -131,6 +131,7 @@ public class DFSOutputStream extends FSOutputSummer
   private FileEncryptionInfo fileEncryptionInfo;
   private int writePacketSize;
   private boolean leaseRecovered = false;
+  private ExtendedBlock userAssignmentLastBlock;
 
   /** Use {@link ByteArrayManager} to create buffer for non-heartbeat packets.*/
   protected DFSPacket createPacket(int packetSize, int chunksPerPkt,
@@ -949,6 +950,9 @@ protected void recoverLease(boolean recoverLeaseOnCloseException) {
   void completeFile() throws IOException {
     // get last block before destroying the streamer
     ExtendedBlock lastBlock = getStreamer().getBlock();
+    if (lastBlock == null) {
+      lastBlock = getUserAssignmentLastBlock();
+    }
     try (TraceScope ignored = dfsClient.getTracer()
         .newScope("DFSOutputStream#completeFile")) {
       completeFile(lastBlock);
@@ -1095,6 +1099,14 @@ ExtendedBlock getBlock() {
     return getStreamer().getBlock();
   }
 
+  public ExtendedBlock getUserAssignmentLastBlock() {
+    return userAssignmentLastBlock;
+  }
+
+  public void setUserAssignmentLastBlock(ExtendedBlock userAssignmentLastBlock) {
+    this.userAssignmentLastBlock = userAssignmentLastBlock;
+  }
+
   @VisibleForTesting
   public long getFileId() {
     return fileId;
@@ -1199,4 +1211,16 @@ private static long calculateDelayForNextRetry(long previousDelay,
                                                  long maxDelay) {
     return Math.min(previousDelay * 2, maxDelay);
   }
+
+  public DFSClient getDfsClient() {
+    return dfsClient;
+  }
+
+  protected void copyBlockCrossNamespace(ExtendedBlock sourceBlk,
+      Token<BlockTokenIdentifier> sourceBlockToken, DatanodeInfo sourceDatanode,
+      ExtendedBlock targetBlk, Token<BlockTokenIdentifier> targetBlockToken,
+      DatanodeInfo targetDatanode) throws IOException {
+    dfsClient.copyBlockCrossNamespace(sourceBlk, sourceBlockToken, sourceDatanode, targetBlk,
+        targetBlockToken, targetDatanode);
+  }
 }

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSStripedOutputStream.java

@@ -1271,6 +1271,9 @@ protected synchronized void closeImpl() throws IOException {
 
       try (TraceScope ignored =
                dfsClient.getTracer().newScope("completeFile")) {
+        if (currentBlockGroup == null) {
+          currentBlockGroup = getUserAssignmentLastBlock();
+        }
         completeFile(currentBlockGroup);
       }
       logCorruptBlocks();

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DistributedFileSystem.java

@@ -600,9 +600,10 @@ public FSDataOutputStream next(final FileSystem fs, final Path p)
    * inherited policy.
    *
    */
-  private HdfsDataOutputStream create(final Path f,
-      final FsPermission permission, final EnumSet<CreateFlag> flag,
-      final int bufferSize, final short replication, final long blockSize,
+  public HdfsDataOutputStream create(
+      final Path f, final FsPermission permission,
+      final EnumSet<CreateFlag> flag, final int bufferSize,
+      final short replication, final long blockSize,
       final Progressable progress, final ChecksumOpt checksumOpt,
       final InetSocketAddress[] favoredNodes, final String ecPolicyName,
       final String storagePolicy)

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/datatransfer/DataTransferProtocol.java

@@ -238,4 +238,18 @@ void blockGroupChecksum(StripedBlockInfo stripedBlockInfo,
           Token<BlockTokenIdentifier> blockToken,
           long requestedNumBytes,
           BlockChecksumOptions blockChecksumOptions) throws IOException;
+
+  /**
+   * Copy a block cross Namespace.
+   * It is used for fastcopy.
+   *
+   * @param sourceBlk the block being copied.
+   * @param sourceBlockToken security token for accessing sourceBlk.
+   * @param targetBlk the block to be writted.
+   * @param targetBlockToken security token for accessing targetBlk.
+   * @param targetDatanode the target datnode which sourceBlk will copy to as targetBlk.
+   */
+  void copyBlockCrossNamespace(ExtendedBlock sourceBlk,
+      Token<BlockTokenIdentifier> sourceBlockToken, ExtendedBlock targetBlk,
+      Token<BlockTokenIdentifier> targetBlockToken, DatanodeInfo targetDatanode) throws IOException;
 }

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/datatransfer/Op.java

@@ -39,6 +39,7 @@ public enum Op {
   RELEASE_SHORT_CIRCUIT_FDS((byte)88),
   REQUEST_SHORT_CIRCUIT_SHM((byte)89),
   BLOCK_GROUP_CHECKSUM((byte)90),
+  COPY_BLOCK_CROSSNAMESPACE((byte)91),
   CUSTOM((byte)127);
 
   /** The code for this operation. */

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/datatransfer/Sender.java

@@ -37,6 +37,7 @@
 import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.DataTransferTraceInfoProto;
 import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpBlockChecksumProto;
 import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpBlockGroupChecksumProto;
+import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpCopyBlockCrossNamespaceProto;
 import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpCopyBlockProto;
 import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpReadBlockProto;
 import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpReplaceBlockProto;
@@ -308,4 +309,18 @@ public void blockGroupChecksum(StripedBlockInfo stripedBlockInfo,
 
     send(out, Op.BLOCK_GROUP_CHECKSUM, proto);
   }
+
+  @Override
+  public void copyBlockCrossNamespace(ExtendedBlock sourceBlk,
+      Token<BlockTokenIdentifier> sourceBlockToken, ExtendedBlock targetBlk,
+      Token<BlockTokenIdentifier> targetBlockToken, DatanodeInfo targetDatanode)
+      throws IOException {
+    OpCopyBlockCrossNamespaceProto proto = OpCopyBlockCrossNamespaceProto.newBuilder()
+        .setHeader(DataTransferProtoUtil.buildBaseHeader(sourceBlk, sourceBlockToken))
+        .setTargetBlock(PBHelperClient.convert(targetBlk))
+        .setTargetToken(PBHelperClient.convert(targetBlockToken))
+        .setTargetDatanode(PBHelperClient.convert(targetDatanode)).build();
+
+    send(out, Op.COPY_BLOCK_CROSSNAMESPACE, proto);
+  }
 }

hadoop-hdfs-project/hadoop-hdfs-client/src/main/proto/datatransfer.proto

@@ -331,3 +331,10 @@ message OpBlockChecksumResponseProto {
 message OpCustomProto {
   required string customId = 1;
 }
+
+message OpCopyBlockCrossNamespaceProto {
+  required BaseHeaderProto header = 1;
+  required ExtendedBlockProto targetBlock = 2;
+  required hadoop.common.TokenProto targetToken = 3;
+  required DatanodeInfoProto targetDatanode = 4;
+}

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java

@@ -136,6 +136,11 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
       "dfs.datanode.ec.reconstruct.write.bandwidthPerSec";
   public static final long DFS_DATANODE_EC_RECONSTRUCT_WRITE_BANDWIDTHPERSEC_DEFAULT =
       0; // A value of zero indicates no limit
+  public static final String DFS_DATANODE_COPY_BLOCK_CROSS_NAMESPACE_SOCKET_TIMEOUT_MS_KEY =
+      "dfs.datanode.copy.block.cross.namespace.socket-timeout.ms";
+  public static final int DFS_DATANODE_COPY_BLOCK_CROSS_NAMESPACE_SOCKET_TIMEOUT_MS_DEFAULT =
+      5 * 60 * 1000;
+
   @Deprecated
   public static final String  DFS_DATANODE_READAHEAD_BYTES_KEY =
       HdfsClientConfigKeys.DFS_DATANODE_READAHEAD_BYTES_KEY;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/datatransfer/Receiver.java

@@ -34,6 +34,7 @@
 import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.ClientOperationHeaderProto;
 import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpBlockChecksumProto;
 import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpBlockGroupChecksumProto;
+import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpCopyBlockCrossNamespaceProto;
 import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpCopyBlockProto;
 import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpReadBlockProto;
 import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpReplaceBlockProto;
@@ -133,6 +134,9 @@ protected final void processOp(Op op) throws IOException {
     case REQUEST_SHORT_CIRCUIT_SHM:
       opRequestShortCircuitShm(in);
       break;
+    case COPY_BLOCK_CROSSNAMESPACE:
+      opCopyBlockCrossNamespace(in);
+      break;
     default:
       throw new IOException("Unknown op " + op + " in data stream");
     }
@@ -339,4 +343,21 @@ private void opStripedBlockChecksum(DataInputStream dis) throws IOException {
       }
     }
   }
+
+  private void opCopyBlockCrossNamespace(DataInputStream dis) throws IOException {
+    OpCopyBlockCrossNamespaceProto proto =
+        OpCopyBlockCrossNamespaceProto.parseFrom(vintPrefixed(dis));
+    TraceScope traceScope = continueTraceSpan(proto.getHeader(), proto.getClass().getSimpleName());
+    try {
+      copyBlockCrossNamespace(PBHelperClient.convert(proto.getHeader().getBlock()),
+          PBHelperClient.convert(proto.getHeader().getToken()),
+          PBHelperClient.convert(proto.getTargetBlock()),
+          PBHelperClient.convert(proto.getTargetToken()),
+          PBHelperClient.convert(proto.getTargetDatanode()));
+    } finally {
+      if (traceScope != null) {
+        traceScope.close();
+      }
+    }
+  }
 }

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

@@ -27,6 +27,8 @@
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BLOCKREPORT_SPLIT_THRESHOLD_DEFAULT;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_CACHEREPORT_INTERVAL_MSEC_DEFAULT;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_CACHEREPORT_INTERVAL_MSEC_KEY;
+import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_COPY_BLOCK_CROSS_NAMESPACE_SOCKET_TIMEOUT_MS_DEFAULT;
+import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_COPY_BLOCK_CROSS_NAMESPACE_SOCKET_TIMEOUT_MS_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_LIFELINE_INTERVAL_SECONDS_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_NON_LOCAL_LAZY_PERSIST;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_NON_LOCAL_LAZY_PERSIST_DEFAULT;
@@ -89,6 +91,7 @@ public class DNConf {
   final int socketWriteTimeout;
   final int socketKeepaliveTimeout;
   final int ecChecksumSocketTimeout;
+  private final int copyBlockCrossNamespaceSocketTimeout;
   private final int transferSocketSendBufferSize;
   private final int transferSocketRecvBufferSize;
   private final boolean tcpNoDelay;
@@ -153,6 +156,9 @@ public DNConf(final Configurable dn) {
     ecChecksumSocketTimeout = getConf().getInt(
         DFS_CHECKSUM_EC_SOCKET_TIMEOUT_KEY,
         DFS_CHECKSUM_EC_SOCKET_TIMEOUT_DEFAULT);
+    copyBlockCrossNamespaceSocketTimeout = getConf().getInt(
+        DFS_DATANODE_COPY_BLOCK_CROSS_NAMESPACE_SOCKET_TIMEOUT_MS_KEY,
+        DFS_DATANODE_COPY_BLOCK_CROSS_NAMESPACE_SOCKET_TIMEOUT_MS_DEFAULT);
     this.transferSocketSendBufferSize = getConf().getInt(
         DFSConfigKeys.DFS_DATANODE_TRANSFER_SOCKET_SEND_BUFFER_SIZE_KEY,
         DFSConfigKeys.DFS_DATANODE_TRANSFER_SOCKET_SEND_BUFFER_SIZE_DEFAULT);
@@ -390,6 +396,15 @@ public int getEcChecksumSocketTimeout() {
     return ecChecksumSocketTimeout;
   }
 
+  /**
+   * Returns socket timeout for copyBlockCrossNamespace.
+   *
+   * @return int socket timeout
+   */
+  public int getCopyBlockCrossNamespaceSocketTimeout() {
+    return copyBlockCrossNamespaceSocketTimeout;
+  }
+
   /**
    * Returns the SaslPropertiesResolver configured for use with
    * DataTransferProtocol, or null if not configured.