Examples of org.apache.hadoop.net.SocketOutputStream

org.apache.hadoop.net.SocketOutputStream
This implements an output stream that can have a timeout while writing. This sets non-blocking flag on the socket channel. So after creating this object , read() on {@link Socket#getInputStream()} and write() on {@link Socket#getOutputStream()} on the associated socket will throw llegalBlockingModeException. Please use {@link SocketInputStream} for reading.

      }
    }
    
    try {
      if (transferTo) {
        SocketOutputStream sockOut = (SocketOutputStream)out;
        sockOut.write(buf, 0, dataOff); // First write checksum
        
        // no need to flush. since we know out is not a buffered stream. 
        sockOut.transferToFully(((FileInputStream)blockIn).getChannel(), 
                                blockInPosition, dataLen);
        blockInPosition += dataLen;
      } else { 
        // normal transfer
        out.write(buf, 0, dataOff + dataLen);

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        throw ioeToSocketException(e);
      }
    } else {
      try {
        //use transferTo(). Checks on out and blockIn are already done. 
        SocketOutputStream sockOut = (SocketOutputStream) out;
        FileChannel fileChannel = ((FileInputStream) blockIn).getChannel();


        if (memoizedBlock.hasBlockChanged(len)) {
          fileChannel.position(blockInPosition);
          IOUtils.readFileChannelFully(
            fileChannel,
            buf,
            dataOff,
            len
          );
          
          ChecksumUtil.updateChunkChecksum(
            buf, checksumOff, dataOff, len, checksum
          );          
          sockOut.write(buf, 0, dataOff + len);
        } else {
          //first write the packet
          sockOut.write(buf, 0, dataOff);
          // no need to flush. since we know out is not a buffered stream.
          sockOut.transferToFully(fileChannel, blockInPosition, len);
        }


        blockInPosition += len;


      } catch (IOException e) {

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      }
    }
    
    try {
      if (transferTo) {
        SocketOutputStream sockOut = (SocketOutputStream)out;
        sockOut.write(buf, 0, dataOff); // First write checksum
        
        // no need to flush. since we know out is not a buffered stream. 
        sockOut.transferToFully(((FileInputStream)blockIn).getChannel(), 
                                blockInPosition, dataLen);
        blockInPosition += dataLen;
      } else { 
        // normal transfer
        out.write(buf, 0, dataOff + dataLen);

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      }
    }
    
    try {
      if (transferTo) {
        SocketOutputStream sockOut = (SocketOutputStream)out;
        // First write header and checksums
        sockOut.write(buf, headerOff, dataOff - headerOff);
        
        // no need to flush since we know out is not a buffered stream
        FileChannel fileCh = ((FileInputStream)blockIn).getChannel();
        LongWritable waitTime = new LongWritable();
        LongWritable transferTime = new LongWritable();
        sockOut.transferToFully(fileCh, blockInPosition, dataLen, 
            waitTime, transferTime);
        datanode.metrics.addSendDataPacketBlockedOnNetworkNanos(waitTime.get());
        datanode.metrics.addSendDataPacketTransferNanos(transferTime.get());
        blockInPosition += dataLen;
      } else {

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        throw ioeToSocketException(e);
      }
    } else {
      try {
        //use transferTo(). Checks on out and blockIn are already done. 
        SocketOutputStream sockOut = (SocketOutputStream) out;
        FileChannel fileChannel = ((FileInputStream) blockIn).getChannel();


        if (memoizedBlock.hasBlockChanged(len)) {
          fileChannel.position(blockInPosition);
          IOUtils.readFileChannelFully(
            fileChannel,
            buf,
            dataOff,
            len
          );
          
          ChecksumUtil.updateChunkChecksum(
            buf, checksumOff, dataOff, len, checksum
          );          
          sockOut.write(buf, 0, dataOff + len);
        } else {
          //first write the packet
          sockOut.write(buf, 0, dataOff);
          // no need to flush. since we know out is not a buffered stream.
          sockOut.transferToFully(fileChannel, blockInPosition, len);
        }


        blockInPosition += len;


      } catch (IOException e) {

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    try {
      if (blockInPosition >= 0) {
        //use transferTo(). Checks on out and blockIn are already done. 


        SocketOutputStream sockOut = (SocketOutputStream)out;
        //first write the packet
        sockOut.write(buf, 0, dataOff);
        // no need to flush. since we know out is not a buffered stream. 


        sockOut.transferToFully(((FileInputStream)blockIn).getChannel(), 
                                blockInPosition, len);


        blockInPosition += len;
      } else {
        // normal transfer

View Full Code Here

      }
    }
    
    try {
      if (transferTo) {
        SocketOutputStream sockOut = (SocketOutputStream)out;
        sockOut.write(buf, 0, dataOff); // First write checksum
        
        // no need to flush. since we know out is not a buffered stream. 
        sockOut.transferToFully(((FileInputStream)blockIn).getChannel(), 
                                blockInPosition, dataLen);
        blockInPosition += dataLen;
      } else { 
        // normal transfer
        out.write(buf, 0, dataOff + dataLen);

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      try {
        if (blockInPosition >= 0) {
          //use transferTo(). Checks on out and blockIn are already done. 


          SocketOutputStream sockOut = (SocketOutputStream)out;
          //first write the packet
          sockOut.write(buf, 0, dataOff);
          // no need to flush. since we know out is not a buffered stream. 


          sockOut.transferToFully(((FileInputStream)blockIn).getChannel(), 
                                  blockInPosition, len);


          blockInPosition += len;
        } else {
          // normal transfer

View Full Code Here

      }
    }
    
    try {
      if (transferTo) {
        SocketOutputStream sockOut = (SocketOutputStream)out;
        // First write header and checksums
        sockOut.write(buf, headerOff, dataOff - headerOff);
        
        // no need to flush since we know out is not a buffered stream
        FileChannel fileCh = ((FileInputStream)blockIn).getChannel();
        LongWritable waitTime = new LongWritable();
        LongWritable transferTime = new LongWritable();
        sockOut.transferToFully(fileCh, blockInPosition, dataLen, 
            waitTime, transferTime);
        datanode.metrics.addSendDataPacketBlockedOnNetworkNanos(waitTime.get());
        datanode.metrics.addSendDataPacketTransferNanos(transferTime.get());
        blockInPosition += dataLen;
      } else {

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    try {
      if (blockInPosition >= 0) {
        //use transferTo(). Checks on out and blockIn are already done. 


        SocketOutputStream sockOut = (SocketOutputStream)out;
        //first write the packet
        sockOut.write(buf, 0, dataOff);
        // no need to flush. since we know out is not a buffered stream. 


        sockOut.transferToFully(((FileInputStream)blockIn).getChannel(), 
                                blockInPosition, len);


        blockInPosition += len;
      } else {
        // normal transfer

View Full Code Here

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