How to use

getDefaultWebUserName

method

in

org.apache.hadoop.hdfs.server.common.JspHelper

final String doAsUserFromQuery = params.doAsUser();
final String remoteUser = usernameFromQuery == null ? JspHelper
  .getDefaultWebUserName(params.conf()) // not specified in request
  : usernameFromQuery;

? getDefaultWebUserName(conf) // not specified in request
: usernameFromQuery;

? getDefaultWebUserName(conf) // not specified in request
: usernameFromQuery;

UserGroupInformation ugi() throws IOException {
 if (UserGroupInformation.isSecurityEnabled()) {
  return tokenUGI();
 }
 final String usernameFromQuery = params.userName();
 final String doAsUserFromQuery = params.doAsUser();
 final String remoteUser = usernameFromQuery == null
   ? JspHelper.getDefaultWebUserName(params.conf()) // not specified in
   // request
   : usernameFromQuery;
 UserGroupInformation ugi = UserGroupInformation.createRemoteUser(remoteUser);
 JspHelper.checkUsername(ugi.getShortUserName(), usernameFromQuery);
 if (doAsUserFromQuery != null) {
  // create and attempt to authorize a proxy user
  ugi = UserGroupInformation.createProxyUser(doAsUserFromQuery, ugi);
 }
 return ugi;
}

UserGroupInformation ugi() throws IOException {
 if (UserGroupInformation.isSecurityEnabled()) {
  return tokenUGI();
 }
 final String usernameFromQuery = params.userName();
 final String doAsUserFromQuery = params.doAsUser();
 final String remoteUser = usernameFromQuery == null
   ? JspHelper.getDefaultWebUserName(params.conf()) // not specified in
   // request
   : usernameFromQuery;
 UserGroupInformation ugi = UserGroupInformation.createRemoteUser(remoteUser);
 JspHelper.checkUsername(ugi.getShortUserName(), usernameFromQuery);
 if (doAsUserFromQuery != null) {
  // create and attempt to authorize a proxy user
  ugi = UserGroupInformation.createProxyUser(doAsUserFromQuery, ugi);
 }
 return ugi;
}

? getDefaultWebUserName(conf) // not specified in request
: usernameFromQuery;