private Map<String, MTableColumnStatistics> getPartitionColStats(Table table, List<String> colNames, String engine)
      throws MetaException {
    Map<String, MTableColumnStatistics> statsMap = Maps.newHashMap();
    List<MTableColumnStatistics> stats = getMTableColumnStatistics(table, colNames, engine);
    for (MTableColumnStatistics cStat : stats) {
      statsMap.put(cStat.getColName(), cStat);
    }
    return statsMap;
  }
Get table'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