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Reflect change entities to adapter errors about duplicate entries when there are are no duplicate key values in the connector.

Hayden Gray 2 months ago in UNIFYBroker Service • updated by Beau Harrison (Senior Product Software Engineer) 2 months ago • 1

I've been having issues on particular PowerShell connectors/adapters in UNIFYBroker where reflecting change entities to the adapter is complaining about duplicate entries when there are are no duplicate key values in the connector.

The schema setup between the connectors and adapters is an ID key in the connector that is then used within the adapter as the DN. So it is a very simple DN template. E.g:
Name Type Key Read-only Required
AccountName String True True True

Distinguished Name Template CN=[AccountName]

The issues are generally fixed by clearing and repopulating the whole adapter, which is not a repeatable solution since it happens on a weekly basis, sometimes more often.

These errors also don't seem to happen after an obvious failures on the connector side, which is what I have previously attributed these issues to. All these connectors have deletion thresholds setup of at least 50%.

Its like broker seems to get itself tied up even though the schedules in the environment have been reduced to the point where only 1 operation is interacting within and with broker at a time.

SQL maintenance is also performed frequently and the SQL instance has plenty of resources allocated.

Version details: v5.3.2 Revision #0

Any help would be appreciated as this has been a long ongoing issue that I've seen across multiple environments.

Adapter
Adapter eb42757f-2f23-4228-928e-993942b0c050 page errored on page reflection. Duration: 00:00:21.5551444. Error: Unify.Framework.UnifyDataException: Duplicate DNs detected on adapter eb42757f-2f23-4228-928e-993942b0c050. Reflection failed. Duplicate DNs: CN=<obfuscated name>,OU=sIAMGroups,DC=IdentityBroker, CN=<obfuscated name 2>,OU=sIAMGroups,DC=IdentityBroker.
at Unify.Product.IdentityBroker.DuplicateDnDetector.DetectDuplicateDns(IDictionaryTwoPassDifferenceReport`4 report)
at Unify.Product.IdentityBroker.Adapter.ReflectChangesInner()
at Unify.Product.IdentityBroker.Adapter.ReflectChanges()
at Unify.Product.IdentityBroker.AdapterAuditingDecorator.ReflectChanges()
at Unify.Product.IdentityBroker.AdapterNotifierDecorator.ReflectChanges()
at Unify.Product.IdentityBroker.ReflectAdapterOnChangeDueJob.b__9_0(IOperationalAdapter adapter).
Error details:
Unify.Framework.UnifyDataException: Duplicate DNs detected on adapter eb42757f-2f23-4228-928e-993942b0c050. Reflection failed. Duplicate DNs: CN=<obfuscated name>,OU=sIAMGroups,DC=IdentityBroker, CN=<obfuscated name 2>,OU=sIAMGroups,DC=IdentityBroker.
at Unify.Product.IdentityBroker.DuplicateDnDetector.DetectDuplicateDns(IDictionaryTwoPassDifferenceReport`4 report)
at Unify.Product.IdentityBroker.Adapter.ReflectChangesInner()
at Unify.Product.IdentityBroker.Adapter.ReflectChanges()
at Unify.Product.IdentityBroker.AdapterAuditingDecorator.ReflectChanges()
at Unify.Product.IdentityBroker.AdapterNotifierDecorator.ReflectChanges()
at Unify.Product.IdentityBroker.ReflectAdapterOnChangeDueJob.b__9_0(IOperationalAdapter adapter)


Adapter Request to reflect change entities of the adapter.
Request to reflect change entities of the eMinerva Student: Groups (eb42757f-2f23-4228-928e-993942b0c050) adapter errored with message: Duplicate DNs detected on adapter eb42757f-2f23-4228-928e-993942b0c050. Reflection failed. Duplicate DNs: CN=<obfuscated name>,OU=sIAMGroups,DC=IdentityBroker, CN=<obfuscated name 2>,OU=sIAMGroups,DC=IdentityBroker.. Duration: 00:00:59.9516712
Error details:
Unify.Framework.UnifyDataException: Duplicate DNs detected on adapter eb42757f-2f23-4228-928e-993942b0c050. Reflection failed. Duplicate DNs: CN=<obfuscated name>,OU=sIAMGroups,DC=IdentityBroker, CN=<obfuscated name 2>,OU=sIAMGroups,DC=IdentityBroker.
at Unify.Product.IdentityBroker.DuplicateDnDetector.DetectDuplicateDns(IDictionaryTwoPassDifferenceReport`4 report)
at Unify.Product.IdentityBroker.Adapter.ReflectChangesInner()
at Unify.Product.IdentityBroker.Adapter.ReflectChanges()
at Unify.Product.IdentityBroker.AdapterAuditingDecorator.ReflectChanges()
at Unify.Product.IdentityBroker.AdapterNotifierDecorator.ReflectChanges()
at Unify.Product.IdentityBroker.ReflectAdapterOnChangeDueJob.b__9_0(IOperationalAdapter adapter)

Under review
Beau Harrison (Senior Product Software Engineer) 2 months ago

Hi Hayden

When you say there are no duplicate account names, are you taking into consideration that DNs are case insensitive? Meaning that if there were two entities with account names johnsmith johnSMITH, they would have duplicate DNs. Also, would these account names have any non-ASCII, non-alphanumeric characters in them, such as Unicode characters with accents, white space, etc?

It's also interesting that you say it can be resolved by clearing the adapter entities. Does this process involve clearing the connector entities as well, or is it done just using the generate changes function? If the former, is there any chance that the full and polling import scripts could produce different account names, or that the data source could provide a potentially duplicate account name on polling import but then rename that account some time later? The next time you do this, can you check and see if this workaround results in any adapter entities with the same DNs (other that casing differences)?

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