Ahad Rana created HADOOP-8919: --------------------------------- Summary: Namenode Kerberos Login does not use proper hostname for host qualified hdfs principal name. Key: HADOOP-8919 URL: https://issues.apache.org/jira/browse/HADOOP-8919 Project: Hadoop Common Issue Type: Bug Components: security Affects Versions: 2.0.2-alpha, 2.0.1-alpha, 2.0.0-alpha, 2.0.3-alpha Environment: CDH4U1 using Kerberos on Ubuntu 12.01 Reporter: Ahad Rana
The Namenode uses the loginAsNameNodeUser method in NameNode.java to login using the hdfs principal. This method in turn invokes SecurityUtil.login with a hostname (last parameter) obtained via a call to InetAddress.getHostName. This call does not always return the fully qualified host name, and thus causes the namenode to login to fail due to kerberos's inability to find a matching hdfs principal in the hdfs.keytab file. Instead it should use InetAddress.getCanonicalHostName. This is consistent with what is used internally by SecurityUtil.java to login in other services, such as the DataNode. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira