title: "could not get table metadata" "Got error 157 'Unknown error code' from NDBCLUSTER"
body: <p>I'm developping a java web application and I use MySQL Cluster for Database</p>
  
  <p>I get this error when I try to instal the application in a Jboss server</p>
  
  <p>....
  org.hibernate.exception.GenericJDBCException: could not get table metadata: MY_TABLE_NAME
  ....
  Caused by: java.sql.SQLException: Got error 157 'Unknown error code' from NDBCLUSTER</p>
  
  <p><strong>environnement info :</strong></p>
  
  <ul>
  <li>prod environnement</li>
  <li>jbos eap 6.2</li>
  <li>mysql cluster with 2 data nodes</li>
  <li>jboss data source URL :
  jdbc:mysql:loadbalance://&lt; ip-1 >,&lt; ip-2 >/BASE_NAME?loadBalanceBlacklistTimeout=5000</li>
  </ul>