How to use

getBufferedOutputStream

method

in

org.apache.hadoop.hdfs.server.datanode.DataXceiver

  throws IOException {
updateCurrentThreadName("Passing file descriptors for block " + blk);
DataOutputStream out = getBufferedOutputStream();
checkAccess(out, true, blk, token,
  Op.REQUEST_SHORT_CIRCUIT_FDS, BlockTokenIdentifier.AccessMode.READ,

 final Token<BlockTokenIdentifier> blockToken) throws IOException {
updateCurrentThreadName("Copying block " + block);
DataOutputStream reply = getBufferedOutputStream();
checkAccess(reply, true, block, blockToken, Op.COPY_BLOCK,
  BlockTokenIdentifier.AccessMode.COPY);

updateCurrentThreadName("Sending block " + block);
OutputStream baseStream = getOutputStream();
DataOutputStream out = getBufferedOutputStream();
checkAccess(out, true, block, blockToken, Op.READ_BLOCK,
  BlockTokenIdentifier.AccessMode.READ);

long size = 0;
final DataOutputStream replyOut = getBufferedOutputStream();

updateCurrentThreadName("Sending block " + block);
OutputStream baseStream = getOutputStream();
DataOutputStream out = getBufferedOutputStream();
checkAccess(out, true, block, blockToken,
  Op.READ_BLOCK, BlockTokenSecretManager.AccessMode.READ);

long size = 0;
final DataOutputStream replyOut = getBufferedOutputStream();
checkAccess(replyOut, isClient, block, blockToken,
  Op.WRITE_BLOCK, BlockTokenSecretManager.AccessMode.WRITE);

  throws IOException {
updateCurrentThreadName("Passing file descriptors for block " + blk);
DataOutputStream out = getBufferedOutputStream();
checkAccess(out, true, blk, token,
  Op.REQUEST_SHORT_CIRCUIT_FDS, BlockTokenSecretManager.AccessMode.READ);

 final Token<BlockTokenIdentifier> blockToken) throws IOException {
updateCurrentThreadName("Copying block " + block);
DataOutputStream reply = getBufferedOutputStream();
checkAccess(reply, true, block, blockToken,
  Op.COPY_BLOCK, BlockTokenSecretManager.AccessMode.COPY);

long size = 0;
final DataOutputStream replyOut = getBufferedOutputStream();
checkAccess(replyOut, isClient, block, blockToken,
  Op.WRITE_BLOCK, BlockTokenSecretManager.AccessMode.WRITE);

  throws IOException {
updateCurrentThreadName("Passing file descriptors for block " + blk);
DataOutputStream out = getBufferedOutputStream();
checkAccess(out, true, blk, token,
  Op.REQUEST_SHORT_CIRCUIT_FDS, BlockTokenSecretManager.AccessMode.READ);

updateCurrentThreadName("Sending block " + block);
OutputStream baseStream = getOutputStream();
DataOutputStream out = getBufferedOutputStream();
checkAccess(out, true, block, blockToken,
  Op.READ_BLOCK, BlockTokenSecretManager.AccessMode.READ);

 final Token<BlockTokenIdentifier> blockToken) throws IOException {
updateCurrentThreadName("Copying block " + block);
DataOutputStream reply = getBufferedOutputStream();
checkAccess(reply, true, block, blockToken,
  Op.COPY_BLOCK, BlockTokenSecretManager.AccessMode.COPY);