@Override
  public boolean dropPartition(String dbName, String tableName, List<String> partVals) throws TException {
    return dropPartition(getDefaultCatalog(conf), dbName, tableName, partVals,
        PartitionDropOptions.instance().deleteData(true));
  }
@param partialPvals partition values, can be partial.  This really means that missing values
                   are represented by empty str.
@param maxParts maximum number of partitions to fetch, or -1 for all
ql/src/java/org/apache/hadoop/hive/ql/metadata/SessionHiveMetaStoreClient.java