Hello All,

We had a crash reported on our MonetDB database, Below are the error messages.

Can you share any insights on the below reported issue. There were no memory/cpu crunch during the crash, System had ample resource available.

MonetDB Version - Jul2017-SP4

2018-07-03 06:33:40 ERR TSV_PROD_DB_A315293: #GDKmmap(327680) fails, try to free up space memory in use=48376596752,virtual memory in use=102304729360
2018-07-03 06:33:40 ERR TSV_PROD_DB_A315293: #GDKmmap(327680) fails, try to free up space memory in use=48368938424,virtual memory in use=102295694776
2018-07-03 06:33:40 ERR TSV_PROD_DB_A315293: #GDKmmap(327680) fails, try to free up space memory in use=48367612864,virtual memory in use=102294369216
2018-07-03 06:33:40 ERR TSV_PROD_DB_A315293: #GDKmmap(327680) fails, try to free up space memory in use=48374211792,virtual memory in use=102300968144
2018-07-03 06:33:47 ERR TSV_PROD_DB_A315293: #GDKmmap(524288) fails, try to free up space memory in use=48312652864,virtual memory in use=103295521856
2018-07-03 06:34:33 MSG merovingian315279: database 'TSV_PROD_DB_A' has crashed after start on 2018-07-02 04:52:12, attempting restart, up min/avg/max: 2h/6d/4w, crash average: 1.00 0.60 0.20 (14-8=6)
2018-07-03 06:34:38 ERR control315279: !monetdbd: an internal error has occurred 'unknown or impossible state: 4'
2018-07-03 06:34:40 ERR merovingian315279: client error: unknown or impossible state: 4
2018-07-03 06:34:40 ERR control315279: !monetdbd: an internal error has occurred 'unknown or impossible state: 4'
2018-07-03 06:34:41 ERR merovingian315279: client error: unknown or impossible state: 4
2018-07-03 06:34:41 ERR control315279: !monetdbd: an internal error has occurred 'unknown or impossible state: 4'

What was running during the crash ? : Users were dropping, recreating tables and loading data.

monetadmin@lnx1535 ~$ cat /etc/redhat-release
CentOS Linux release 7.4.1708 (Core)
monetadmin@lnx1535 ~$ free -g
total used free shared buff/cache available
Mem: 1007 199 419 1 388 804
Swap: 31 0 31
monetadmin@lnx1535 ~$ cat /proc/cpuinfo|grep -i processor|wc -l
128

Thank You,

Gautham