How to use

sendShmErrorResponse

method

in

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

try {
 if (sock == null) {
  sendShmErrorResponse(ERROR_INVALID, "Bad request from " +
    peer + ": must request a shared " +
    "memory segment over a UNIX domain socket.");
  sendShmErrorResponse(ERROR_UNSUPPORTED, 
    "This datanode has not been configured to support " +
    "short-circuit shared memory segments.");
  return;
 } catch (IOException e) {
  sendShmErrorResponse(ERROR,
    "Failed to create shared file descriptor: " + e.getMessage());
  return;

try {
 if (sock == null) {
  sendShmErrorResponse(ERROR_INVALID, "Bad request from " +
    peer + ": must request a shared " +
    "memory segment over a UNIX domain socket.");
  sendShmErrorResponse(ERROR_UNSUPPORTED, 
    "This datanode has not been configured to support " +
    "short-circuit shared memory segments.");
  return;
 } catch (IOException e) {
  sendShmErrorResponse(ERROR,
    "Failed to create shared file descriptor: " + e.getMessage());
  return;

try {
 if (sock == null) {
  sendShmErrorResponse(ERROR_INVALID, "Bad request from " +
    peer + ": must request a shared " +
    "memory segment over a UNIX domain socket.");
  sendShmErrorResponse(ERROR_UNSUPPORTED, 
    "This datanode has not been configured to support " +
    "short-circuit shared memory segments.");
  return;
 } catch (IOException e) {
  sendShmErrorResponse(ERROR,
    "Failed to create shared file descriptor: " + e.getMessage());
  return;