我是 Kerberos/hive 的新手，想要使用 JDBC 连接 hive（Kerberos 实现）。
> > org.apache.hadoop.conf.Configuration conf = new
> > org.apache.hadoop.conf.Configuration();
> > conf.set("hadoop.security.authentication", "Kerberos");
> > UserGroupInformation.setConfiguration(conf);
> > UserGroupInformation.loginUserFromKeytab("<principal>", "<path to keytab file>");
> >
> >
> > Class.forName(Util.getConstantProperty("hive.class.name"));
> >
> > log.info("Making connection with Hive DB"); hiveConn =
> > DriverManager.getConnection("<hive db url>",,"hive.user","");
出现错误：
2018-10-29 20:32:50 ERROR ConnectionHandler:80 - java.lang.IllegalArgumentException: Can't get Kerberos realm java.lang.IllegalArgumentException: Can't get Kerberos realm
at org.apache.hadoop.security.HadoopKerberosName.setConfiguration(HadoopKerberosName.java:65)
at org.apache.hadoop.security.UserGroupInformation.initialize(UserGroupInformation.java:263)
at org.apache.hadoop.security.UserGroupInformation.setConfiguration(UserGroupInformation.java:299)
at utils.ConnectionHandler.connectHiveDB(ConnectionHandler.java:58)
另外评论中Prazy的建议
不要忘记在 krb5.conf 中设置默认领域
如果仍然有问题，请将 kerberos 调试添加到命令行中
export HADOOP_OPTS="-Dsun.security.krb5.debug=true"
export HADOOP_ROOT_LOGGER=DEBUG,console
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