title: Hive connector to HDP 2.6 not working
body: <p>I am using KNIME 3.4.1 and trying to connect it to HDP 2.6.1 using this <a href="https://www.knime.com/blog/speaking-kerberos-with-knime-big-data-extensions" rel="nofollow noreferrer">KNIME blog post</a>.</p>
  
  <p>The kerberos ticket is present </p>
  
  <pre><code>E:\Omkar\Development\Software\Analysis\KNIME&gt;klist
  
  Credentials cache: C:\Users\ojoqcu\krb5cc_ojoqcu
  
  Default principal: ojoqcu@GLOBAL.SCD.COM, 1 entry found.
  
  [1]  Service Principal:  krbtgt/GLOBAL.SCD.COM@GLOBAL.SCD.COM
       Valid starting:     Oct 06,  2017 10:49:39
       Expires:            Oct 06,  2017 20:49:39
  
  E:\Omkar\Development\Software\Analysis\KNIME&gt;knime.exe
  
  E:\Omkar\Development\Software\Analysis\KNIME&gt;
  </code></pre>
  
  <p>The krb5.conf file is present under KNIME jre</p>
  
  <pre><code>[libdefaults]
    renew_lifetime = 7d
    forwardable = true
    default_realm = GLOBAL.SCD.COM
    ticket_lifetime = 10h
    dns_lookup_realm = false
    dns_lookup_kdc = true
    default_ccache_name = /tmp/krb5cc_%{uid}
    allow_weak_crypto = yes
  
  [logging]
    default = FILE:/var/log/krb5kdc.log
    admin_server = FILE:/var/log/kadmind.log
    kdc = FILE:/var/log/krb5kdc.log
  
  [realms]
    GLOBAL.SCD.COM = {
      default_domain = sss.se.com
    }
  
    SE = {
      default_domain = sss.se.com
    }
  </code></pre>
  
  <p>I have added the Hortonworks Hive JDBC jar, yet, the driver doesn't show up in the config.
  <a href="https://i.stack.imgur.com/uBi5N.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uBi5N.jpg" alt="jdbc_jar_path"></a></p>
  
  <p><a href="https://i.stack.imgur.com/U8vei.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/U8vei.jpg" alt="hive-connector_config"></a></p>
  
  <p>The attached screenshot shows the config. of the Hive connector, upon execution, I get the following error :</p>
  
  <pre><code>ERROR Hive Connector       0:1        Exception creating Kerberos based jdbc connection. Error: null
  ERROR Hive Connector       0:1        Execute failed: Could not create connection to database: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)
  </code></pre>