grouper-users - RE: Groups with duplicate names

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RE: Groups with duplicate names

From: Paul Gazda <>
To: Chris Hyzer <>, Grouper Users Mailing List <>
Subject: RE: Groups with duplicate names
Date: Tue, 19 May 2009 10:05:12 -0700
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Great! Thanks for the quick response and fix.

Paul Gazda

From: Chris Hyzer [mailto:]
Sent: Tuesday, May 19, 2009 10:03 AM
To: Paul Gazda; Grouper Users Mailing List
Subject: RE: Groups with duplicate names

OK, I see. I put a check in to prevent that if you want to get latest grouper API branch 1.4, so it is no longer possible.

And like I said, in grouper 1.5 there is a db constraint. So you should expect to never get more than one group back with a group_name_exact unless there is a DB corruption (what I consider this case).

Btw, you used to be able to do the same thing in GSH/API also, and I fixed that too. (But again, in 1.5 its less of an issue)

gsh 0% grouperSession = GrouperSession.startRootSession();

edu.internet2.middleware.grouper.GrouperSession: 9a2471e9d2ca4946ad1cb10909b8c3a7,'GrouperSystem','application'

gsh 1% group = GroupFinder.findByName(grouperSession, "aStem:aGroup");

group: name='aStem:aGroup' displayName='aStem:aGroup' uuid='56b46639daf940a1a29398b08e982657'

gsh 2% group.setExtension("aGroup4");

gsh 3% group.store();

gsh 4% exit

https://bugs.internet2.edu/jira/browse/GRP-278

Regards,

Chris

From: Paul Gazda [mailto:]
Sent: Tuesday, May 19, 2009 10:20 AM
To: Chris Hyzer; Grouper Users Mailing List
Subject: RE: Groups with duplicate names

Chris,

We are not running load balanced. Just one server. But the example in your reply was not exactly what I did.

I first saved 2 differently named groups. Then I modified the second group to have the same name as the first group using --saveMode=UPDATE and --groupLookupUuid to find the group to modify. That results in the two groups having the same name and the query behavior I described.

Thanks.

Paul Gazda

From: Chris Hyzer [mailto:]
Sent: Tuesday, May 19, 2009 6:13 AM
To: Paul Gazda; Grouper Users Mailing List
Subject: RE: Groups with duplicate names

I tried this and couldn’t reproduce. (see output below).

Are you on the latest 1.4 branch that has caching enabled, and are you running a load balanced array of web service servers? I wonder if it is possible that server1 queries for the group, gets a negative that it exists, caches that, then server2 adds the group, then server1 queries to see if the group is there, returns a negative from cache, then adds the group again.

Grouper 1.5 has a unique index on group name, so this wont be possible, fyi. Its not possible for grouper 1.4 to do this.

Anyways, I made a tweak to the latest 1.4 so that when adding a group, the query that sees if the group exists is not cached. If you think this might be the issue, you might want to get latest the latest API, put it in your WS, and try again.

If that isn’t the problem, then we probably need to keep looking, let me know.

C:\mchyzer\isc\dev\grouper_v1_4\grouperClient\dist\institution\grouperClient.institution-1.4.1> java -jar grouperClient

.jar --operation=groupSaveWs --name=edu:testing1234 --saveMode=INSERT

Success: T: code: SUCCESS_INSERTED: edu:testing1234

C:\mchyzer\isc\dev\grouper_v1_4\grouperClient\dist\institution\grouperClient.institution-1.4.1> java -jar grouperClient

.jar --operation=groupSaveWs --name=edu:testing1234 --saveMode=INSERT

Error with grouper client, check the logs: Bad response from web service: resultCode: PROBLEM_SAVING_GROUPS, There were

0 successes and 1 failures of saving groups.

edu.internet2.middleware.grouper.exception.GroupAddAlreadyExistsException: group already exists with name: 'edu:testing1

234',