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From "xuepingyang@cienet.com.cn" <xuepingy...@cienet.com.cn>
Subject Configuring User Authentication failed
Date Tue, 29 Mar 2016 09:29:26 GMT
We installed drill-1.6 in distributed mode.
We are trying to config a custom authenticator ,we do the steps as the document shows,but
it failed.
1,Build the following Java file into a JAR file:
package myorg.dept.drill.security;

import java.io.IOException;

import org.apache.drill.common.config.DrillConfig;
import org.apache.drill.exec.exception.DrillbitStartupException;
import org.apache.drill.exec.rpc.user.security.UserAuthenticationException;
import org.apache.drill.exec.rpc.user.security.UserAuthenticator;
import org.apache.drill.exec.rpc.user.security.UserAuthenticatorTemplate;

 * Implement {@link org.apache.drill.exec.rpc.user.security.UserAuthenticator} for illustrating
how to develop a custom authenticator and use it in Drill
@UserAuthenticatorTemplate(type = "myCustomAuthenticatorType")
public class MyCustomDrillUserAuthenticatorImpl implements UserAuthenticator {

 public static final String USER_1 = "user1";
 public static final String USER_2 = "user2";
 public static final String PWD_1 = "pwd1";
 public static final String PWD_2 = "pwd2";

  * Setup for authenticating user credentials.
 public void setup(DrillConfig drillConfig) throws DrillbitStartupException {
  // If the authenticator has any setup such as making sure authenticator
  // provider servers are up and running or
  // needed libraries are available, it should be added here.

  * Authenticate the given <i>user</i> and <i>password</i> combination.
  * @param userName
  * @param password
  * @throws UserAuthenticationException
  *             if authentication fails for given user and password.
 public void authenticate(String userName, String password)
   throws UserAuthenticationException {
  if (!(USER_1.equals(userName) && PWD_1.equals(password))
    && !(USER_2.equals(userName) && PWD_2.equals(password))) {
   throw new UserAuthenticationException(
     "custom failure message if the admin wants to show it to user");


  * Close the authenticator. Used to release resources. Ex. LDAP
  * authenticator opens connections to LDAP server, such connections
  * resources are released in a safe manner as part of close.
  * @throws IOException
 public void close() throws IOException {
  // Any clean up such as releasing files/network resources should be done
  // here

2,Add the jar file to the path: <drill-install-path>/jars
3,Create a file named drill-module.conf with the following configuration code,and add it to
drill {
        classpath.scanning {
          packages += "myorg.dept.drill.security"
4,modify the drill-override.conf,add the following configuration code in drill.exec block:
security.user.auth {
            enabled: true,
            packages += "myorg.dept.drill.security",
            impl: "myCustomAuthenticatorType"
5,restart the drill again.
Then we find that we can't start the drill successfully.Here is the log:
2016-03-29 16:49:32,392 [main] ERROR o.a.d.e.r.u.s.UserAuthenticatorFactory - Failed to find
the implementation of 'org.apache.drill.exe
c.rpc.user.security.UserAuthenticator' for type 'myCustomAuthenticatorType'
Can you give me some advice?
Thank you very much.

Best Wishes
Xueping Yang

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