@Override
      protected List<MetaStoreServerUtils.ColStatsObjWithSourceInfo> getSqlResult(
          GetHelper<List<MetaStoreServerUtils.ColStatsObjWithSourceInfo>> ctx) throws MetaException {
        return directSql.getColStatsForAllTablePartitions(catName, dbName, enableBitVector, enableKll);
      }
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