[jira] [Created] (HDFS-16750) NameNode should use NameNode.getRemoteUser() to log audit event to avoid possible NPE

["ZanderXu (Jira)" <ji...@apache.org>]

ZanderXu created HDFS-16750:
-------------------------------

             Summary: NameNode should use NameNode.getRemoteUser() to log audit event to avoid possible NPE 
                 Key: HDFS-16750
                 URL: https://issues.apache.org/jira/browse/HDFS-16750
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: ZanderXu
            Assignee: ZanderXu


NameNode should use NameNode.getRemoteUser() to log audit event to avoid possible NPE.

The relate code is: 
{code:java}
private void logAuditEvent(boolean succeeded, String cmd, String src,
    String dst, FileStatus stat) throws IOException {
  if (isAuditEnabled() && isExternalInvocation()) {
    logAuditEvent(succeeded, Server.getRemoteUser(), Server.getRemoteIp(),
        cmd, src, dst, stat);
  }
}

// the ugi may be null.
private void logAuditEvent(boolean succeeded,
    UserGroupInformation ugi, InetAddress addr, String cmd, String src,
    String dst, FileStatus status) {
  final String ugiStr = ugi.toString();
  ...
} {code}



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