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Re: [grouper-dev] DB problem - some broken groups - help appreciated.

Chronological Thread 
  • From: "Gettes, Michael" <>
  • To: "" <>
  • Subject: Re: [grouper-dev] DB problem - some broken groups - help appreciated.
  • Date: Fri, 31 May 2019 17:43:01 +0000

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
To prove, I ran a right outer join to find what’s in group_set that is not in
select * from grouper.grouper_group_set gs
right join grouper.grouper_groups g
on gs.member_group_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>

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