HIVE-29203:get_aggr_stats_for doesn't aggregate stats when direct sql batch retrieve is enabled

Author: ramitg254

ql/src/test/queries/clientpositive/perf/batched_query16.q

@@ -0,0 +1,35 @@
+set hive.mapred.mode=nonstrict;
+set hive.auto.convert.anti.join=true;
+set hive.metastore.direct.sql.batch.size=1000;
+-- start query 1 in stream 0 using template query16.tpl and seed 171719422
+explain
+select
+   count(distinct cs_order_number) as `order count`
+  ,sum(cs_ext_ship_cost) as `total shipping cost`
+  ,sum(cs_net_profit) as `total net profit`
+from
+   catalog_sales cs1
+  ,date_dim
+  ,customer_address
+  ,call_center
+where
+    d_date between '2001-4-01' and
+           (cast('2001-4-01' as date) + 60 days)
+and cs1.cs_ship_date_sk = d_date_sk
+and cs1.cs_ship_addr_sk = ca_address_sk
+and ca_state = 'NY'
+and cs1.cs_call_center_sk = cc_call_center_sk
+and cc_county in ('Ziebach County','Levy County','Huron County','Franklin Parish',
+                  'Daviess County'
+)
+and exists (select *
+            from catalog_sales cs2
+            where cs1.cs_order_number = cs2.cs_order_number
+              and cs1.cs_warehouse_sk <> cs2.cs_warehouse_sk)
+and not exists(select *
+               from catalog_returns cr1
+               where cs1.cs_order_number = cr1.cr_order_number)
+order by count(distinct cs_order_number)
+limit 100;
+
+-- end query 1 in stream 0 using template query16.tpl