public List<String> getSkewedColNames() {
    return (tTable.getSd().getSkewedInfo() != null) ? tTable.getSd().getSkewedInfo()
        .getSkewedColNames() : new ArrayList<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