Package org.apache.hadoop.hdfs.server.protocol

Examples of org.apache.hadoop.hdfs.server.protocol.NamenodeCommand

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        null);
    if (cacheEntry != null && cacheEntry.isSuccess()) {
      return (NamenodeCommand) cacheEntry.getPayload();
    }
    writeLock();
    NamenodeCommand cmd = null;
    try {
      checkOperation(OperationCategory.CHECKPOINT);
      checkNameNodeSafeMode("Checkpoint not started");
     
      LOG.info("Start checkpoint for " + backupNode.getAddress());
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        null);
    if (cacheEntry != null && cacheEntry.isSuccess()) {
      return (NamenodeCommand) cacheEntry.getPayload();
    }
    writeLock();
    NamenodeCommand cmd = null;
    try {
      checkOperation(OperationCategory.CHECKPOINT);

      if (isInSafeMode()) {
        throw new SafeModeException("Checkpoint not started", safeMode);
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    case CheckPointCommand:
      CheckpointCommandProto chkPt = cmd.getCheckpointCmd();
      return new CheckpointCommand(PBHelper.convert(chkPt.getSignature()),
          chkPt.getNeedToReturnImage());
    default:
      return new NamenodeCommand(cmd.getAction());
    }
  }
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      if (isInSafeMode()) {
        throw new SafeModeException("Checkpoint not started", safeMode);
      }
      LOG.info("Start checkpoint for " + bnReg.getAddress());
      NamenodeCommand cmd = getFSImage().startCheckpoint(bnReg, nnReg);
      getEditLog().logSync();
      return cmd;
    } finally {
      writeUnlock();
    }
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            + " cTime = " + bnReg.getCTime()
            + ". Current version: LV = " + storage.getLayoutVersion()
            + " cTime = " + storage.getCTime();
    if(msg != null) {
      LOG.error(msg);
      return new NamenodeCommand(NamenodeProtocol.ACT_SHUTDOWN);
    }
    boolean needToReturnImg = true;
    if(storage.getNumStorageDirs(NameNodeDirType.IMAGE) == 0)
      // do not return image if there are no image directories
      needToReturnImg = false;
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    case CheckPointCommand:
      CheckpointCommandProto chkPt = cmd.getCheckpointCmd();
      return new CheckpointCommand(PBHelper.convert(chkPt.getSignature()),
          chkPt.getNeedToReturnImage());
    default:
      return new NamenodeCommand(cmd.getAction());
    }
  }
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  }

  @Override
  public StartCheckpointResponseProto startCheckpoint(RpcController unused,
      StartCheckpointRequestProto request) throws ServiceException {
    NamenodeCommand cmd;
    try {
      cmd = impl.startCheckpoint(PBHelper.convert(request.getRegistration()));
    } catch (IOException e) {
      throw new ServiceException(e);
    }
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    NNStorage bnStorage = bnImage.getStorage();

    long startTime = now();
    bnImage.freezeNamespaceAtNextRoll();
   
    NamenodeCommand cmd =
      getRemoteNamenodeProxy().startCheckpoint(backupNode.getRegistration());
    CheckpointCommand cpCmd = null;
    switch(cmd.getAction()) {
      case NamenodeProtocol.ACT_SHUTDOWN:
        shutdown();
        throw new IOException("Name-node " + backupNode.nnRpcAddress
                                           + " requested shutdown.");
      case NamenodeProtocol.ACT_CHECKPOINT:
        cpCmd = (CheckpointCommand)cmd;
        break;
      default:
        throw new IOException("Unsupported NamenodeCommand: "+cmd.getAction());
    }

    bnImage.waitUntilNamespaceFrozen();
   
    CheckpointSignature sig = cpCmd.getSignature();
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            + " cTime = " + bnReg.getCTime()
            + ". Current version: LV = " + storage.getLayoutVersion()
            + " cTime = " + storage.getCTime();
    if(msg != null) {
      LOG.error(msg);
      return new NamenodeCommand(NamenodeProtocol.ACT_SHUTDOWN);
    }
    boolean needToReturnImg = true;
    if(storage.getNumStorageDirs(NameNodeDirType.IMAGE) == 0)
      // do not return image if there are no image directories
      needToReturnImg = false;
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            + " cTime = " + bnReg.getCTime()
            + ". Current version: LV = " + storage.getLayoutVersion()
            + " cTime = " + storage.getCTime();
    if(msg != null) {
      LOG.error(msg);
      return new NamenodeCommand(NamenodeProtocol.ACT_SHUTDOWN);
    }
    boolean needToReturnImg = true;
    if(storage.getNumStorageDirs(NameNodeDirType.IMAGE) == 0)
      // do not return image if there are no image directories
      needToReturnImg = false;
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Related Classes of org.apache.hadoop.hdfs.server.protocol.NamenodeCommand

  • org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolServerSideTranslatorPB
  • org.apache.hadoop.hdfs.protocolPB.PBHelper
  • org.apache.hadoop.hdfs.server.namenode.Checkpointer
  • org.apache.hadoop.hdfs.server.namenode.FSImage
  • org.apache.hadoop.hdfs.server.namenode.FSNamesystem
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