title: ERROR jdbc.HiveConnection: Error opening session Hive
body: <p>i try to run JBDC code for Hive2 get error. i have hive 1.2.0 version hadoop 1.2.1 version.
  but in command line hive and beeline works fine without any problem.but with jdbc getting error.</p>
  
  <pre><code>import java.sql.SQLException;
  import java.sql.Connection;
  import java.sql.ResultSet;
  import java.sql.Statement;
  import java.sql.DriverManager;
  
  public class HiveJdbcClient {
    private static String driverName = "org.apache.hive.jdbc.HiveDriver";
  
    /**
     * @param args
     * @throws SQLException
     */
    public static void main(String[] args) throws SQLException {
  //BasicConfigurator.configure();
  
    try {
        Class.forName(driverName);
      } catch (ClassNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
      //replace "hive" here with the name of the user the queries should run as
      Connection con = DriverManager.getConnection("jdbc:hive2://localhost:10000/default","", "");
      Statement stmt = con.createStatement();
      String tableName = "cdr";
     stmt.execute("drop table if exists " + tableName);
  // show tables
      String sql = "show tables '" + tableName + "'";
      System.out.println("Running: " + sql);
      ResultSet res = stmt.executeQuery(sql);
      if (res.next()) {
        System.out.println(res.getString(1));
      }
  
    }
  }
  </code></pre>
  
  <p><strong>i Get this Error While Run Code.</strong></p>
  
  <pre><code>15/06/19 12:08:53 INFO jdbc.HiveConnection: Will try to open client transport with JDBC Uri: jdbc:hive2://localhost:10000/default
  15/06/19 12:08:53 ERROR jdbc.HiveConnection: Error opening session
  org.apache.thrift.TApplicationException: Required field 'client_protocol' is unset! Struct:TOpenSessionReq(client_protocol:null, configuration:{use:database=default})
          at org.apache.thrift.TApplicationException.read(TApplicationException.java:111)
          at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:71)
          at org.apache.hive.service.cli.thrift.TCLIService$Client.recv_OpenSession(TCLIService.java:156)
          at org.apache.hive.service.cli.thrift.TCLIService$Client.OpenSession(TCLIService.java:143)
          at org.apache.hive.jdbc.HiveConnection.openSession(HiveConnection.java:578)
          at org.apache.hive.jdbc.HiveConnection.&lt;init&gt;(HiveConnection.java:192)
          at org.apache.hive.jdbc.HiveDriver.connect(HiveDriver.java:105)
          at java.sql.DriverManager.getConnection(DriverManager.java:571)
          at java.sql.DriverManager.getConnection(DriverManager.java:215)
          at HiveJdbcClient.main(HiveJdbcClient.java:24)
  Exception in thread "main" java.sql.SQLException: Could not establish connection to jdbc:hive2://localhost:10000/default: Required field 'client_protocol' is unset! Struct:TOpenSessionReq(client_protocol:null, configuration:{use:database=default})
          at org.apache.hive.jdbc.HiveConnection.openSession(HiveConnection.java:589)
          at org.apache.hive.jdbc.HiveConnection.&lt;init&gt;(HiveConnection.java:192)
          at org.apache.hive.jdbc.HiveDriver.connect(HiveDriver.java:105)
          at java.sql.DriverManager.getConnection(DriverManager.java:571)
          at java.sql.DriverManager.getConnection(DriverManager.java:215)
          at HiveJdbcClient.main(HiveJdbcClient.java:24)
  Caused by: org.apache.thrift.TApplicationException: Required field 'client_protocol' is unset! Struct:TOpenSessionReq(client_protocol:null, configuration:{use:database=default})
  </code></pre>
  
  <p>Any Solution ?</p>