static String getOriginalLocation(Partition partition) {
    Map<String, String> params = partition.getParameters();
    return params.get(hive_metastoreConstants.ORIGINAL_LOCATION);
  }
Returns original partition of archived partition, null for unarchived one.
ql/src/java/org/apache/hadoop/hive/ql/ddl/table/storage/archive/AlterTableArchiveUtils.java