Grouper Developers Forum

["Gettes, Michael" <>]

I’m trying to decipher the error presented…

Caused by: java.sql.BatchUpdateException: Cannot delete or update a parent 
row: a foreign key constraint fails (`grouper`.`grouper_group_set`, 
CONSTRAINT `fk_group_set_member_group_id` FOREIGN KEY (`member_group_id`) 
REFERENCES `grouper_groups` (`id`))

I read this to imply there is a value in grouper_group_set.member_group_id 
that is not in grouper_groups.id.
To prove, I ran a right outer join to find what’s in group_set that is not in 
groups
select * from grouper.grouper_group_set gs 
right join grouper.grouper_groups g 
on gs.member_group_id = g.id
where gs.member_group_id = null

and got 0 records returned.

i am not sure where the problem is - any guidance?

> On May 31, 2019, at 11:16 AM, Gettes, Michael <> wrote:
> 
> Hi all,
> 
> I have a condition of about a dozen groups which cannot be modified or 
> deleted and the log snippet attached shows the error log for one of these 
> groups.  First, I’d like to know how I fix these groups.  Second, the 
> condition of how this occurred I am still trying to prove but it seems to 
> be related to whether or not memory is configured with ms=mx.  I haven’t 
> been able to recreate what caused the condition in the log snippet but the 
> log snippet with ms=mx devolves into Garbarge collection failures and the 
> loader becoming unusable over time.  With ms<mx (8g<9g) the errors i see in 
> the log snippet do not cause the loader to become unusable over time.  
> Anyway, I’d really appreciate help fixing the bad groups based on the log.
> 
> I decided not to post this to the grouper-users list because I don’t want 
> people thinking grouper is unstable and this could happen to them.  As you 
> guys know, i have been doing some extreme things with grouper to see what’s 
> possible and find issues and i think these “broken groups” are related to 
> that work and the various memory problems I was having.
> 
> Thank you!
> 
> /mrg
> 
> <20190531-grouper-error.log>