DBT3 query #11 caused ExeMgr to restart

Build tested: alpha 1.0.1

mscadmin> getsoft
getsoftwareinfo Tue Jun 28 20:06:51 2016

Name : mariadb-columnstore-platform Relocations: (not relocatable)
Version : 1.0 Vendor: MariaDB Corporation Ab
Release : 1 Build Date: Mon 13 Jun 2016 06:50:26 PM CDT
Install Date: Fri 17 Jun 2016 10:53:22 AM CDT Build Host: srvbuilder

Tested on a 1gb DBT3 (TPCH) database.

Msg in the debug.log indicated that ExeMgr was being stopped by ProcessMonitor. I am not sure what caused this to happen. My VM has 32gb memory and I allocated 16gb for TotalUMMemory. This does not seem to be a memory problem.

MariaDB [testdb]> select
-> ps_partkey,
-> sum(ps_supplycost * ps_availqty) as value
-> from
-> partsupp,
-> supplier,
-> nation
-> where
-> ps_suppkey = s_suppkey
-> and s_nationkey = n_nationkey
-> and n_name = 'UNITED STATES'
-> group by
-> ps_partkey having
-> sum(ps_supplycost * ps_availqty) > (
-> select
-> sum(ps_supplycost * ps_availqty) * 0.0001000000
-> from
-> partsupp,
-> supplier,
-> nation
-> where
-> ps_suppkey = s_suppkey
-> and s_nationkey = n_nationkey
-> and n_name = 'UNITED STATES'
-> )
-> order by
-> value desc;
ERROR 1815 (HY000): Internal error: Lost connection to ExeMgr. Please contact your administrator

Entry in crit.log
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.940892 |0|0|0| C 18 CAL0000: *****Calpont Process Restarting: ExeMgr, old PID = 24815

entry in info.log
Jun 28 20:21:09 columnStore ProcessMonitor[2464]: 09.011743 |0|0|0| I 18 CAL0000: Calpont Process ExeMgr restarted successfully!!
Jun 28 20:21:09 columnStore ProcessManager[2742]: 09.059576 |0|0|0| I 17 CAL0000: MSG RECEIVED: Process Restarted on pm1/ExeMgr

Entry in debug.log
Jun 28 20:21:02 columnStore ExeMgr[24815]: 02.232592 |147|0|0| D 16 CAL0041: Start SQL statement: select ps_partkey, sum(ps_supplycost * ps_availqty) as value from partsupp, supplier, nation where ps_suppkey = s_suppkey and s_nationkey = n_nationkey and n_name = 'UNITED STATES' group by ps_partkey having sum(ps_supplycost * ps_availqty) > ( select sum(ps_supplycost * ps_availqty) * 0.0001000000 from partsupp, supplier, nation where ps_suppkey = s_suppkey and s_nationkey = n_nationkey and n_name = 'UNITED STATES' ) order by value desc; |testdb|
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.941432 |0|0|0| D 18 CAL0000: STOPPING Process: ExeMgr
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.941797 |0|0|0| D 18 CAL0000: Send SET Alarm ID 13 on device ExeMgr
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.941893 |0|0|0| D 18 CAL0000: StatusUpdate of Process ExeMgr State = 1 PID = 0
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.953145 |0|0|0| D 18 CAL0000: statusControl: REQUEST RECEIVED: Set Process pm1/ExeMgr State = AUTO_OFFLINE
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.953315 |0|0|0| D 18 CAL0000: statusControl: Set Process pm1/ExeMgr State = AUTO_OFFLINE PID = 0
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.969862 |0|0|0| D 18 CAL0000: Send CLEAR Alarm ID 25 on device ExeMgr
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.984033 |0|0|0| D 18 CAL0000: Pkill Process just to make sure: ExeMgr*
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.984160 |0|0|0| D 18 CAL0000: STARTING Process: ExeMgr
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.984200 |0|0|0| D 18 CAL0000: Process location: /usr/local/mariadb/columnstore/bin/ExeMgr
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.984813 |0|0|0| D 18 CAL0000: Dependent process of PrimProc/pm1 is 4
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.990144 |0|0|0| D 18 CAL0000: Send SET Alarm ID 13 on device ExeMgr
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.994028 |0|0|0| D 18 CAL0000: Pkill Process just to make sure: ExeMgr*
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.994102 |0|0|0| D 18 CAL0000: StatusUpdate of Process ExeMgr State = 3 PID = 0
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.994544 |0|0|0| D 18 CAL0000: statusControl: REQUEST RECEIVED: Set Process pm1/ExeMgr State = AUTO_INIT
Jun 28 20:21:04 columnStore ProcessMonitor[2464]: 04.994587 |0|0|0| D 18 CAL0000: statusControl: Set Process pm1/ExeMgr State = AUTO_INIT PID = 0
Jun 28 20:21:05 columnStore ProcessMonitor[2464]: 05.006422 |0|0|0| D 18 CAL0000: Send CLEAR Alarm ID 27 on device DBRM
Jun 28 20:21:06 columnStore ProcessMonitor[2464]: 06.009339 |0|0|0| D 18 CAL0000: StatusUpdate of Process ExeMgr State = 21 PID = 39209
Jun 28 20:21:06 columnStore ProcessMonitor[2464]: 06.009952 |0|0|0| D 18 CAL0000: ExeMgr PID is 39209
Jun 28 20:21:06 columnStore ProcessMonitor[2464]: 06.009956 |0|0|0| D 18 CAL0000: statusControl: REQUEST RECEIVED: Set Process pm1/ExeMgr State = PID_UPDATE
Jun 28 20:21:06 columnStore ProcessMonitor[2464]: 06.010061 |0|0|0| D 18 CAL0000: statusControl: Set Process pm1/ExeMgr State = PID_UPDATE PID = 39209
Jun 28 20:21:06 columnStore ProcessMonitor[2464]: 06.010589 |0|0|0| D 18 CAL0000: Send CLEAR Alarm ID 21 on device ExeMgr
Jun 28 20:21:06 columnStore ProcessMonitor[2464]: 06.029837 |0|0|0| D 18 CAL0000: Send CLEAR Alarm ID 25 on device ExeMgr
Jun 28 20:21:06 columnStore ProcessMonitor[2464]: 06.047830 |0|0|0| D 18 CAL0000: Send CLEAR Alarm ID 13 on device ExeMgr
Jun 28 20:21:07 columnStore ProcessMonitor[2464]: 07.039883 |0|0|0| D 18 CAL0000: statusControl: REQUEST RECEIVED: Set Process pm1/ExeMgr State = BUSY_INIT
Jun 28 20:21:07 columnStore ProcessMonitor[2464]: 07.039920 |0|0|0| D 18 CAL0000: statusControl: Set Process pm1/ExeMgr State = BUSY_INIT PID = 39209
Jun 28 20:21:07 columnStore ProcessMonitor[2464]: 07.042495 |0|0|0| D 18 CAL0000: statusControl: REQUEST RECEIVED: Set Process pm1/ExeMgr State = ACTIVE
Jun 28 20:21:07 columnStore ProcessMonitor[2464]: 07.042547 |0|0|0| D 18 CAL0000: statusControl: Set Process pm1/ExeMgr State = ACTIVE PID = 39209
Jun 28 20:21:09 columnStore ProcessMonitor[2464]: 09.011016 |0|0|0| D 18 CAL0000: Inform Process Mgr that process was restarted: ExeMgr