GDK reported error. MT_mremap: mremap failed. !OS: Cannot allocate memory

15 Mar 2018


      The free disk space is 800G.
And the query also fail when I run query right after a restart of the 
MonetDB server.
And I'm not very sure what the mserver5 size means. When I run the 
query, the log file provide some information below, is that your mentioned?
         #GDKmremap(2465464320) fails, try to free up space [memory in 
use=149750256,virtual memory in use=4497801712]
Also, I'm sorry that the information(query statement and result) I put  
in is incomplete by my negligence. I copy the query statement and result 
and error message again as followed:
result and error message:
GDK reported error.
MT_mremap: mremap(0x7ffc80000000,2054553600,2465464320) failed
!OS: Cannot allocate memory
HEAPextend: failed to extend to 2465464320 for 55/5577.tail: GDKmremap() 
failed
+-------------+--------------+-------+
| c_last_name | c_first_name | sales |
+=============+==============+=======+
+-------------+--------------+-------+
0 tuples
query statement:
with
frequent_ss_items as
     (
     select
         substr(i_item_desc,1,30) itemdesc
         ,i_item_sk item_sk
         ,d_date solddate
         ,count(*) cnt
     from
         store_sales
         ,date_dim
         ,item
     where
         ss_sold_date_sk = d_date_sk
         and ss_item_sk = i_item_sk
         and d_year in (1999,1999+1,1999+2,1999+3)
     group by
         itemdesc
         ,i_item_sk
         ,d_date
     having count(*) >4
     ),
max_store_sales as
     (
     select
         max(csales) tpcds_cmax
     from
         (
         select
             c_customer_sk
             ,sum(ss_quantity*ss_sales_price) csales
         from
             store_sales
             ,customer
             ,date_dim
         where
             ss_customer_sk = c_customer_sk
             and ss_sold_date_sk = d_date_sk
             and d_year in (1999,1999+1,1999+2,1999+3)
         group by c_customer_sk
         ) x
     ),
best_ss_customer as
     (
     select
         c_customer_sk
         ,sum(ss_quantity*ss_sales_price) ssales
     from
         store_sales
         ,customer
     where
         ss_customer_sk = c_customer_sk
     group by c_customer_sk
     having
         sum(ss_quantity*ss_sales_price) > (95/100.0) *
         (
         select * from
             max_store_sales
          )
     )
     select sum(sales) from
         (
         select
             cs_quantity*cs_list_price sales
         from
             catalog_sales
             ,date_dim
         where
             d_year = 1999
             and d_moy = 1
             and cs_sold_date_sk = d_date_sk
             and cs_item_sk in (select item_sk from frequent_ss_items)
             and cs_bill_customer_sk in (select c_customer_sk from 
best_ss_customer)
         union all
             select ws_quantity*ws_list_price sales
        from web_sales
            ,date_dim
        where d_year = 1999
          and d_moy = 1
          and ws_sold_date_sk = d_date_sk
          and ws_item_sk in (select item_sk from frequent_ss_items)
          and ws_bill_customer_sk in (select c_customer_sk from 
best_ss_customer)) y
limit 100;
with frequent_ss_items as
  (select substr(i_item_desc,1,30) itemdesc,i_item_sk item_sk,d_date 
solddate,count(*) cnt
   from store_sales
       ,date_dim
       ,item
   where ss_sold_date_sk = d_date_sk
     and ss_item_sk = i_item_sk
     and d_year in (1999,1999 + 1,1999 + 2,1999 + 3)
   group by itemdesc,i_item_sk,d_date
   having count(*) >4),
  max_store_sales as
  (select max(csales) tpcds_cmax
   from (select c_customer_sk,sum(ss_quantity*ss_sales_price) csales
         from store_sales
             ,customer
             ,date_dim
         where ss_customer_sk = c_customer_sk
          and ss_sold_date_sk = d_date_sk
          and d_year in (1999,1999+1,1999+2,1999+3)
         group by c_customer_sk) x),
  best_ss_customer as
  (select c_customer_sk,sum(ss_quantity*ss_sales_price) ssales
   from store_sales
       ,customer
   where ss_customer_sk = c_customer_sk
   group by c_customer_sk
   having sum(ss_quantity*ss_sales_price) > (95/100.0) * (select
   *
  from max_store_sales))
   select  c_last_name,c_first_name,sales
  from (select c_last_name,c_first_name,sum(cs_quantity*cs_list_price) sales
         from catalog_sales
             ,customer
             ,date_dim
         where d_year = 1999
          and d_moy = 1
          and cs_sold_date_sk = d_date_sk
          and cs_item_sk in (select item_sk from frequent_ss_items)
          and cs_bill_customer_sk in (select c_customer_sk from 
best_ss_customer)
          and cs_bill_customer_sk = c_customer_sk
        group by c_last_name,c_first_name
       union all
       select c_last_name,c_first_name,sum(ws_quantity*ws_list_price) sales
        from web_sales
            ,customer
            ,date_dim
        where d_year = 1999
          and d_moy = 1
          and ws_sold_date_sk = d_date_sk
          and ws_item_sk in (select item_sk from frequent_ss_items)
          and ws_bill_customer_sk in (select c_customer_sk from 
best_ss_customer)
          and ws_bill_customer_sk = c_customer_sk
        group by c_last_name,c_first_name) x
  order by c_last_name,c_first_name,sales
   limit 100;
Thanks!
Regards,
Rancho

RanchoYuan

Stefan Manegold

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