Partition getPartition(List<String> partVals) throws MetaException {
    String partName = makePartName(tTable.getPartitionKeys(), partVals);
    return getPartition(partName);
  }
Get a partition matching the partition values.

@param partVals partition values for this partition, must be in the same order as the
                partition keys of the table.
@return the partition object, or if not found null.
@throws MetaException partition values are incorrect.
ql/src/java/org/apache/hadoop/hive/ql/metadata/PartitionTree.java