public List<List<String>> getSkewedColValues(){
    return (tTable.getSd().getSkewedInfo() != null) ? tTable.getSd().getSkewedInfo()
        .getSkewedColValues() : new ArrayList<List<String>>();
  }
Marker SemanticException, so that processing that allows for table validation failures
and appropriately handles them can recover from these types of SemanticExceptions
ql/src/java/org/apache/hadoop/hive/ql/metadata/Table.java