public static void rollbackConnection(@Nullable Connection rsrc,@Nullable IgniteLogger log){
  if (rsrc != null)   try {
    rsrc.rollback();
  }
 catch (  SQLException e) {
    warn(log,"Failed to rollback JDBC connection: " + e.getMessage());
  }
}

public static void rollbackConnection ( @ Nullable Connection rsrc , @ Nullable IgniteLogger log ) { if ( rsrc != null ) try { rsrc . rollback ( ) ; } catch ( SQLException e ) { warn ( log , "Failed to rollback JDBC connection: " + e . getMessage ( ) ) ; } }
rollbacks jdbc connection logging possible checked exception .
