PBRS Oct/2020 Release update causes errors in Scheduled Refresh

[luandrad]

Hi all,

After install the new release update of PBRS in a DEV Server, some reports are not beeing refresh with successfully:

SessionID: 12a473d7-3e18-4071-b4d4-3145543d99ff
[0] -1056505856: COM error: System.Core, A sequência não contém elementos.
[1] -1055784828: The database operation was cancelled because of an earlier failure.

The same report in May/2020 version is refreshing normally.

I already opened the report in Desktop October versioon, refresh all, save again e nothing changes.

Could be a bug in the release?

Thanks.

[jlwkok · Accepted solution]

This has been fixed by Microsoft, see https://community.powerbi.com/t5/Report-Server/Power-BI-Report-Server-October-2020-update-has-been-r...

[AdEzone]

The workaround will only work if you have not used the October 2020 Desktop version to open-edit-save the .pbix file directly in the server.

The May2020 will refuse to open the file as it has been updated to the Enhanced Dataset Metadata Format..... Too late...

Furthermore, you better have saved a copy of your reports already in production... If so, just LOAD from the server your previous .pbix file and it will run scheduled updates again.

Then you can use May2020 version to make changes.

Please fix the issue ASAP.... These things should have been tested before releasing the update....

It is better to wait some more when structural changes are done better than this...

[Anonymous]

We are seeing the same thing when we try and refresh.  We will revert the desktop back to the May 2020 release.  Please fix ASAP.

[Anonymous]

Hi Luanrad,

Can you let me know what is the type of datasource used by your report and the connection string(with identifying info removed).

thanks

Boreki

[luandrad]

Hi Boreki,

thanks for you reply.

The report source is MSSQL databases. 1 is ReportServer and the second is other with employees information, to merge UserDC information.

Detailed error log:

2020-10-29 16:15:07.6046|ERROR|8|Error Processing Data Model Refresh: SessionId: 2f160d21-7e95-421f-9ef1-323fa962cb66, Status: Error Failed to refresh the model, Exception Microsoft.AnalysisServices.OperationException: Failed to save modifications to the server. Error returned: 'COM error: System.Core, A sequência não contém elementos.
The current operation was cancelled because another operation in the transaction failed.
COM error: mscorlib, Já foi adicionado um item com a mesma chave..
'.
   em Microsoft.AnalysisServices.Tabular.Model.SaveChangesImpl(SaveOptions options)
   em Microsoft.PowerBI.ReportServer.AsServer.TOMWrapper.RefreshModel(Database database)
   em Microsoft.PowerBI.ReportServer.AsServer.AnalysisServicesServer.RefreshDatabase(String databaseName, IEnumerable`1 dataSources, IEnumerable`1 parameters, String clientSessionId)
   em Microsoft.PowerBI.ReportServer.WebHost.EventHandler.AnalysisServicesDataRefresh.RefreshDatabase(AsDatabaseInfo asDatabaseInfo)
   em Microsoft.PowerBI.ReportServer.WebHost.EventHandler.DataRefreshScope.<>c__DisplayClass34_0.<ExecuteActionWithLogging>b__0()
   em Microsoft.PowerBI.ReportServer.WebHost.EventHandler.DataRefreshScope.<ExecuteFuncWithLogging>d__33`1.MoveNext()

BR.

Lúcio

[Anonymous]

Hi Lúcio!

Would you please also check the log prefixed with "asmanagedroot" for any exceptions around the same time and share here if possible?

Thanks

gboreki

[luandrad]

Boreki,

I saw the "asmanagedroot" log and there is no "ERROR" log register in the same period, just |INFO| registers. I wouldn't share the log here because the file has a lot of sensetive data.

BR.

Lúcio

[Anonymous]

Are you having issues with other reports? or just this one? Anything different as it related to datasources connectivity here?

[luandrad]

Yes, there is others reports with errors, and others is OK to refresh.

For example, another that is with error, this was the mensage at the firts time:

2020-10-29 16:01:38.6731|ERROR|5|Error Processing Data Model Refresh: SessionId: 14f19665-0ba8-4a27-85f9-94988a64d949, Status: Error Failed to refresh the model, Exception Microsoft.AnalysisServices.OperationException: Failed to save modifications to the server. Error returned: 'The module named 'Html' has been disabled in this context.. The exception was raised by the IDbCommand interface.

And now, after open/edit from PBIRS in PBIDS, refresh the Data, and save again the report in PBIRS, the error is the same as the other report when trying refresh:

*This report has MSSQL Datasource and Web/CSV.

2020-10-29 17:38:35.4243|ERROR|23|Error Processing Data Model Refresh: SessionId: 8c3c4b42-0bc8-4a38-8e9a-31bc9c3710e7, Status: Error Failed to refresh the model, Exception Microsoft.AnalysisServices.OperationException: Failed to save modifications to the server. Error returned: 'COM error: System.Core, A sequência não contém elementos.
The database operation was cancelled because of an earlier failure.
COM error: System.Core, A sequência não contém elementos.

Lúcio

[Anonymous]

Lucio,

Refresh for html datasources are not supported, was this something that was working in the previous release and started failing after you upgraded to october?

To be clear, refreshes from html would have your M expression as "Web.Page", "Web.BrowserContents". This is different than if you are fetching a csv file from a web location, which is indeed supported (in this case the M expression is Web.Contents).

Thanks

-gboreki