Grouper Developers Forum

["Hyzer, Chris" <>]

Yes its hibernate.  Haven't seen a problem with this one...

-----Original Message-----
From: Black, Carey M. 
<>
 
Sent: Tuesday, October 16, 2018 2:01 PM
To: Hyzer, Chris 
<>
Cc: 

Subject: Possible performance issue with HSQLDB...

Chris, (et. al.)

I have a test instance that is currently still using the HSQLDB. ( I know... 
I am going to reset the env and move to a "real DB" ... soon...)

But I found that when a group is being added as a member of another group 
this SQL takes a very long time to execute:

select member0_.id as id1_24_, 
        member0_.hibernate_version_number as hibernat2_24_, 
        member0_.subject_id as subject_3_24_, 
        member0_.subject_source as subject_4_24_, 
        member0_.subject_type as subject_5_24_, 
        member0_.context_id as context_6_24_, 
        member0_.subject_identifier0 as subject_7_24_, 
        member0_.sort_string0 as sort_str8_24_, 
        member0_.sort_string1 as sort_str9_24_, 
        member0_.sort_string2 as sort_st10_24_, 
        member0_.sort_string3 as sort_st11_24_, 
        member0_.sort_string4 as sort_st12_24_, 
        member0_.search_string0 as search_13_24_, 
        member0_.search_string1 as search_14_24_, 
        member0_.search_string2 as search_15_24_, 
        member0_.search_string3 as search_16_24_, 
        member0_.search_string4 as search_17_24_, 
        member0_.name as name18_24_, 
        member0_.description as descrip19_24_ 
from grouper_members member0_ cross join grouper_memberships_all_v 
membership1_ 
where membership1_.owner_group_id=? and membership1_.field_id=? 
        and membership1_.member_id=member0_.id and 
membership1_.immediate_mship_enabled='T'

Maybe this is the "performance issue" that you have seen from time to time in 
the test scripts?
        ( "cross join" sounds.... like a bad idea on any system of any size.)

Maybe this is just a hibernate on HSQLDB issue? Maybe not?

Hope that helps.

-- 
Carey Matthew