How to fix Keberos Authentication prompt while running Java application - kerberos

Question

I wrote a Java application to connect with hive-metastore. It works fine but when I run the jar file on Linux it asks for Kerberos Username and password
. I already specified the Kerberos principal and keytab file in my code. And I don't want to use additional jass.config file. Is there any way to resolve that problem?
Here is my source code
HiveConf conf = new HiveConf();
MetastoreConf.setVar(conf, ConfVars.THRIFT_URIS, "thrift://HOSTNAME:9083");
MetastoreConf.setBoolVar(conf, ConfVars.USE_THRIFT_SASL, true);
MetastoreConf.setVar(conf, ConfVars.KERBEROS_PRINCIPAL, "hive/HOSTNAME#example.com");
MetastoreConf.setVar(conf, ConfVars.KERBEROS_KEYTAB_FILE, "hive.keytab");
System.setProperty("java.security.krb5.realm", "EXAMPLE.COM");
System.setProperty("java.security.krb5.kdc", "HOSTNAME");
System.setProperty("javax.security.auth.useSubjectCredsOnly", "false");
HiveMetaStoreClient client = new HiveMetaStoreClient(conf);
client.close();
Expected Result-
It should verify the connection successfully
Actual result-
java -jar Application
Kerberos username [root]:
Kerberos password [root]:
I want to bypass this kerberos terminal prompt authentication. Is there any way to do that?

Answer 1

final String user = "hive/HOSTNAME#EXAMPLE.COM";
final String keyPath = "hive.keytab";
Configuration conf = new Configuration();
System.out.println("In case of kerberos authentication");
conf.set("hadoop.security.authentication", "kerberos");
System.setProperty("java.security.krb5.kdc", "HOSTNAME");
System.setProperty("java.security.krb5.realm", "EXAMPLE.COM");
UserGroupInformation.setConfiguration(conf);
UserGroupInformation.loginUserFromKeytab(user, keyPath);
HiveConf conf1 = new HiveConf(); MetastoreConf.setVar(conf1,
ConfVars.THRIFT_URIS, "thrift://HOSTNAME:9083"); HiveMetaStoreClient
client = new HiveMetaStoreClient(conf1);
client.close();
It works fine now