Hi all, i am trying connect to impala ( v2.6.0-cdh5.8.3) by jdbc with kerberos authentication. This is my code:   public class ImpalaUtil { private static String jdbcDriver="com.cloudera.impala.jdbc4.Driver"; private static String URL="jdbc:impala://<host_imapal_deamon>:21050;AuthMech=1;KrbRealm=REALM.COM;KrbHostFQDN=<host_impala_deamon>;KrbServiceName=impala"; private ImpalaUtil() { System.setProperty("sun.security.krb5.debug", "true"); System.setProperty("java.security.krb5.conf", "/etc/krb5.conf"); System.setProperty("java.security.auth.login.config","<paht>/key/jaas.conf"); } } This is jaas.conf:   Client { com.sun.security.auth.module.Krb5LoginModule required useKeyTab=true doNotPrompt=true useTicketCache=true principal="myuser@REALM.COM" keyTab="/home/tmp/myown.keytab"; }; I get the following error:     >>>KinitOptions cache name is /tmp/krb5cc_1000 java.sql.SQLException: [Simba][ImpalaJDBCDriver](500310) Invalid operation: Unable to obtain Principal Name for authentication ; at com.cloudera.impala.hivecommon.api.HiveServer2ClientFactory.createTransport(HiveServer2ClientFactory.java:224) at com.cloudera.impala.hivecommon.api.HiveServer2ClientFactory.createClient(HiveServer2ClientFactory.java:52) at com.cloudera.impala.hivecommon.core.HiveJDBCConnection.connect(HiveJDBCConnection.java:597) at com.cloudera.impala.jdbc.common.BaseConnectionFactory.doConnect(BaseConnectionFactory.java:219) at com.cloudera.impala.jdbc.common.AbstractDriver.connect(AbstractDriver.java:216) at java.sql.DriverManager.getConnection(DriverManager.java:664) at java.sql.DriverManager.getConnection(DriverManager.java:270) at eu.factory.connection.hive.ImpalaUtil.connect(ImpalaUtil.java:48) at eu.factory.connection.hive.ImpalaUtil.connection(ImpalaUtil.java:73) at eu.factory.statement.ExecuteImpalaQuery.q1(ExecuteImpalaQuery.java:15) Caused by: com.cloudera.impala.support.exceptions.GeneralException: [Simba][ImpalaJDBCDriver](500310) Invalid operation: Unable to obtain Principal Name for authentication ; ... 10 more Caused by: javax.security.auth.login.LoginException: Unable to obtain Principal Name for authentication at com.sun.security.auth.module.Krb5LoginModule.promptForName(Krb5LoginModule.java:841) at com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:704) at com.sun.security.auth.module.Krb5LoginModule.login(Krb5LoginModule.java:617) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at javax.security.auth.login.LoginContext.invoke(LoginContext.java:755) at javax.security.auth.login.LoginContext.access$000(LoginContext.java:195) at javax.security.auth.login.LoginContext$4.run(LoginContext.java:682) at javax.security.auth.login.LoginContext$4.run(LoginContext.java:680) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680) at javax.security.auth.login.LoginContext.login(LoginContext.java:587) at com.cloudera.impala.hivecommon.api.HiveServer2ClientFactory.createTransport(HiveServer2ClientFactory.java:113) at com.cloudera.impala.hivecommon.api.HiveServer2ClientFactory.createClient(HiveServer2ClientFactory.java:52) at com.cloudera.impala.hivecommon.core.HiveJDBCConnection.connect(HiveJDBCConnection.java:597) at com.cloudera.impala.jdbc.common.BaseConnectionFactory.doConnect(BaseConnectionFactory.java:219) at com.cloudera.impala.jdbc.common.AbstractDriver.connect(AbstractDriver.java:216) at java.sql.DriverManager.getConnection(DriverManager.java:664) at java.sql.DriverManager.getConnection(DriverManager.java:270)     If i start ticket in shell:    > kinit myuser   it works properly.     Any idea?   Thanks     ... View more