Hi,
After doing a 3.8.1 upgrade (install into new directory, upgrade db from 3.6.5), clicking on ‘Tickets’ / ‘New Search’ causes a 10-15 second pause.
Digging through the active queries when that occurs shows the following query:
SELECT DISTINCT main.* FROM Users main CROSS JOIN ACL ACL_4 JOIN Principals Principals_1 ON ( Principals_1.id = main.id ) JOIN CachedGroupMembers CachedGroupMembers_2 ON ( CachedGroupMembers_2.MemberId = Principals_1.id ) JOIN Groups Groups_3 ON ( Groups_3.id = CachedGroupMembers_2.GroupId ) WHERE (Principals_1.Disabled = ‘0’) AND (ACL_4.PrincipalType = Groups_3.Type) AND (Principals_1.id != ‘1’) AND (Principals_1.PrincipalType = ‘User’) AND (ACL_4.RightName = ‘OwnTicket’ OR ACL_4.RightName = ‘SuperUser’) AND (Groups_3.Domain = ‘RT::Queue-Role’) AND ((ACL_4.ObjectType = ‘RT::Queue’) OR (ACL_4.ObjectType = ‘RT::System’)) ORDER BY main.Name ASC
Eww.
Anyway. The explain on this shows:
*************************** 1. row ***************************
id: 1
select_type: SIMPLE
table: main
type: range
possible_keys: PRIMARY
key: PRIMARY
key_len: 4
ref: NULL
rows: 65
Extra: Using where; Using temporary; Using filesort
*************************** 2. row ***************************
id: 1
select_type: SIMPLE
table: Principals_1
type: eq_ref
possible_keys: PRIMARY
key: PRIMARY
key_len: 4
ref: rt3.main.id
rows: 1
Extra: Using where; Distinct
*************************** 3. row ***************************
id: 1
select_type: SIMPLE
table: CachedGroupMembers_2
type: ref
possible_keys: DisGrouMem,CachedGroupMembers3
key: CachedGroupMembers3
key_len: 5
ref: rt3.Principals_1.id
rows: 1
Extra: Using where; Distinct
*************************** 4. row ***************************
id: 1
select_type: SIMPLE
table: ACL_4
type: range
possible_keys: ACL1
key: ACL1
key_len: 54
ref: NULL
rows: 82
Extra: Using where; Using index; Distinct
*************************** 5. row ***************************
id: 1
select_type: SIMPLE
table: Groups_3
type: eq_ref
possible_keys: PRIMARY,Groups1,Groups2
key: PRIMARY
key_len: 4
ref: rt3.CachedGroupMembers_2.GroupId
rows: 1
Extra: Using where; Distinct
Using google, two possible matches were found.
-
One of the queues has a ‘Group Right’ allowing ‘Everyone’ to ‘Own Ticket’. I have gone through all our queues, found one queue with this permission. Removed the permission, issue still persists. I’ve even gone through and verified disabled queue’s group rights.
-
The explain shows ‘Using filesort’ and the ‘tmp_table_size’ should be increased. Changing this to 4 times the default has had no effect. This coupled with the fact that our DB isn’t that big.
So, I was wondering if anybody else was experiencing this pause, and preferably if anybody knows what’s causing it so I can fix it.
Thanks
Stuart J. Browne