private Map<String, MPartitionColumnStatistics> getPartitionColStats(Table table, String partitionName,
      List<String> colNames, String engine) throws NoSuchObjectException, MetaException {
    Map<String, MPartitionColumnStatistics> statsMap = Maps.newHashMap();
    List<MPartitionColumnStatistics> stats =
        getMPartitionColumnStatistics(table, Lists.newArrayList(partitionName), colNames, engine);
    for (MPartitionColumnStatistics cStat : stats) {
      statsMap.put(cStat.getColName(), cStat);
    }
    return statsMap;
  }
Get partition's column stats

@return Map of column name and its stats
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/ObjectStore.java