[HADOOP-16094] AuthenticationFilter can trigger NullPointerException in KerberosName class

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.2.0, 3.3.0, 3.1.2
• Assignee: Eric Yang
• Reporter: Eric Yang
• Created: 05/Feb/19 20:58
• Updated: 06/Feb/19 00:41

Description

Hadoop AuthenticationFilter example can fail with NullPointerException if auth_to_local rules has not been parsed from Configuration object. This can happen if the web application does not have any initialization code that leads to triggering: UserGroupInformation.initialize(conf, boolean);

Stacktrace:

2019-02-05 20:08:05,668 [http-bio-8080-exec-11] DEBUG org.apache.hadoop.security.authentication.server.AuthenticationFilter- Authentication exception: java.lang.NullPointerException
org.apache.hadoop.security.authentication.client.AuthenticationException: java.lang.NullPointerException
	at org.apache.hadoop.security.authentication.server.KerberosAuthenticationHandler.authenticate(KerberosAuthenticationHandler.java:315)
	at org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:536)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:962)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException
	at org.apache.hadoop.security.authentication.util.KerberosName.getShortName(KerberosName.java:422)
	at org.apache.hadoop.security.authentication.server.KerberosAuthenticationHandler.runWithPrincipal(KerberosAuthenticationHandler.java:352)
	at org.apache.hadoop.security.authentication.server.KerberosAuthenticationHandler.access$000(KerberosAuthenticationHandler.java:64)
	at org.apache.hadoop.security.authentication.server.KerberosAuthenticationHandler$2.run(KerberosAuthenticationHandler.java:304)
	at org.apache.hadoop.security.authentication.server.KerberosAuthenticationHandler$2.run(KerberosAuthenticationHandler.java:301)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.authentication.server.KerberosAuthenticationHandler.authenticate(KerberosAuthenticationHandler.java:300)
	... 18 more

Issue Links

• is broken by: HADOOP-15959 revert HADOOP-12751