@Explain(displayName = "partition values", explainLevels = { Level.USER, Level.DEFAULT, Level.EXTENDED })
  public LinkedHashMap<String, String> getPartSpec() {
    return partSpec;
  }
@param part Partition
@param tblDesc Table Descriptor
@param usePartSchemaProperties Use Partition Schema Properties to set the
partition descriptor properties. This is usually set to true by the caller
if the table is partitioned, i.e. if the table has partition columns.
@throws HiveException
ql/src/java/org/apache/hadoop/hive/ql/plan/PartitionDesc.java