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The following commit(s) were added to refs/heads/branch-3.1 by this push:
     new a446949  HADOOP-16031.  Fixed TestSecureLogins unit test.  Contributed 
by Akira Ajisaka
a446949 is described below

commit a446949f568ed0269741f258bb50b3b4f95db142
Author: Eric Yang <[email protected]>
AuthorDate: Mon Jan 7 13:24:01 2019 -0500

    HADOOP-16031.  Fixed TestSecureLogins unit test.  Contributed by Akira 
Ajisaka
    
    (cherry picked from commit bba76b6f31d5452fe048dcc6853c12a1894024fe)
---
 .../org/apache/hadoop/registry/secure/TestSecureLogins.java | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git 
a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-registry/src/test/java/org/apache/hadoop/registry/secure/TestSecureLogins.java
 
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-registry/src/test/java/org/apache/hadoop/registry/secure/TestSecureLogins.java
index d66bb79..a61e6a2 100644
--- 
a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-registry/src/test/java/org/apache/hadoop/registry/secure/TestSecureLogins.java
+++ 
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-registry/src/test/java/org/apache/hadoop/registry/secure/TestSecureLogins.java
@@ -42,6 +42,10 @@ import 
org.apache.hadoop.security.authentication.util.KerberosName;
 import org.apache.hadoop.security.authentication.util.KerberosUtil;
 import org.apache.hadoop.registry.client.impl.zk.RegistrySecurity;
 import org.apache.hadoop.registry.client.impl.zk.ZookeeperConfigOptions;
+
+import static 
org.apache.hadoop.security.authentication.util.KerberosName.DEFAULT_MECHANISM;
+import static 
org.apache.hadoop.security.authentication.util.KerberosName.MECHANISM_HADOOP;
+import static 
org.apache.hadoop.security.authentication.util.KerberosName.MECHANISM_MIT;
 import static org.apache.hadoop.util.PlatformName.IBM_JAVA;
 
 import org.junit.Test;
@@ -195,12 +199,15 @@ public class TestSecureLogins extends 
AbstractSecureRegistryTest {
 
   @Test
   public void testValidKerberosName() throws Throwable {
-
+    KerberosName.setRuleMechanism(MECHANISM_HADOOP);
+    new HadoopKerberosName(ZOOKEEPER).getShortName();
+    // MECHANISM_MIT allows '/' and '@' in username
+    KerberosName.setRuleMechanism(MECHANISM_MIT);
     new HadoopKerberosName(ZOOKEEPER).getShortName();
     new HadoopKerberosName(ZOOKEEPER_LOCALHOST).getShortName();
     new HadoopKerberosName(ZOOKEEPER_REALM).getShortName();
-    // standard rules don't pick this up
-    // new HadoopKerberosName(ZOOKEEPER_LOCALHOST_REALM).getShortName();
+    new HadoopKerberosName(ZOOKEEPER_LOCALHOST_REALM).getShortName();
+    KerberosName.setRuleMechanism(DEFAULT_MECHANISM);
   }
 
   @Test


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