@Override
  public void alter_partition(String catName, String dbName, String tblName, Partition newPart,
      EnvironmentContext environmentContext) throws TException {
    alter_partition(catName, dbName, tblName, newPart, environmentContext, null);
  }
@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