How to see why an SSAS cube fails to refresh a table - ssas

Question

We have a tabular model cube that is refreshed each day via an SQL Agent job calling an SSAS Command. The command is simply:
{
"refresh": {
"type": "full",
"objects": [
{
"database": "KPIDashboardv1"
}
]
}
}
The job runs and succeeds each day. But I have noticed that some of the tables in the cube have not refreshed. select * from $system.TMSCHEMA_partitions shows these tables with a RefreshedTime of weeks ago.
How can I find what error or problem SSAS is having when attempting to process these tables?
I have tried:
Taking the Table Properties query from $system.TMSCHEMA_partitions
and executing that query against the relevant Data Source. It
succeeds promptly and contains up-to-date data.
Looked at the Output file configured for the SQL Agent job step. It
is empty.

Answer 1

Have you tried to check the data that XE collects?
You needed "ProgressReportEnd" event
<Create xmlns="http://schemas.microsoft.com/analysisservices/2003/engine">
<ObjectDefinition>
<Trace>
<ID>ETLExecutionLogs</ID>
<Name>ETLExecutionLogs</Name>
<AutoRestart>true</AutoRestart>
<XEvent xmlns="http://schemas.microsoft.com/analysisservices/2011/engine/300/300">
<event_session name="ETLExecutionLogs" dispatchLatency="0" maxEventSize="0" maxMemory="4" memoryPartition="none" eventRetentionMode="AllowSingleEventLoss" trackCausality="true" xmlns="http://schemas.microsoft.com/analysisservices/2003/engine">
<event package="AS" name="ProgressReportEnd" />
<target package="package0" name="event_file">
<parameter name="filename" value="d:\YourServerLogPath\OLAP\Log\ETLExecutionLogs.xel" />
<parameter name="max_file_size" value="250" />
<parameter name="max_rollover_files" value="4" />
<parameter name="increment" value="50" />
</target>
</event_session>
</XEvent>
</Trace>
</ObjectDefinition>
</Create>
After that you can use powershell to extract info:
$SharedPath = "C:\Program Files\Microsoft SQL Server\150\Shared";
$xeCore = [System.IO.Path]::Combine($SharedPath, "Microsoft.SqlServer.XE.Core.dll");
$xeLinq = [System.IO.Path]::Combine($SharedPath, "Microsoft.SqlServer.XEvent.Linq.dll");
Add-Type -Path $xeLinq;
if( [System.IO.File]::Exists($xeCore) )
{
Add-Type -Path $xeCore;
}
[Microsoft.SqlServer.XEvent.Linq.QueryableXEventData] $xEvents = $null;
$files = [System.IO.Directory]::EnumerateFiles("d:\YourServerLogPath\OLAP\Log","ETLExecutionLogs*.xel")
$xEvents =
New-Object -TypeName Microsoft.SqlServer.XEvent.Linq.QueryableXEventData(
$files
);
$dt = New-Object System.Data.Datatable;
$dt.Columns.Add("EventSubclass",[int]);
$dt.Columns.Add("ObjectType",[int]);
$dt.Columns.Add("NTCanonicalUserName",[String]);
$dt.Columns.Add("DatabaseName",[String]);
$dt.Columns.Add("ObjectPath",[String]);
$dt.Columns.Add("ObjectID",[String]);
$dt.Columns.Add("EndTime",[DateTimeOffset]);
$dt.Columns.Add("StartTime",[DateTimeOffset]);
$dt.Columns.Add("RequestID",[Guid]);
$dt.Columns.Add("ReEncoding",[String]);
foreach($publishedEvent in $xEvents)
{
if( ($publishedEvent.Fields["EventSubclass"].value -In 55) -or ($publishedEvent.Fields["EventSubclass"].Value -In 59 -And $publishedEvent.Fields["ObjectType"].Value -In 802016,802015,802014, 802013, 802018 -And
$publishedEvent.Name -eq "ProgressReportEnd" -And $publishedEvent.Fields["Success"].Value -eq "1" ))
{
$row = $dt.NewRow();
$row.EventSubclass = $publishedEvent.Fields["EventSubclass"].Value;
$row.ObjectType = $publishedEvent.Fields["ObjectType"].Value;
$row.NTCanonicalUserName = $publishedEvent.Fields["NTCanonicalUserName"].Value;
$row.DatabaseName = $publishedEvent.Fields["DatabaseName"].Value;
$row.ObjectPath = $publishedEvent.Fields["ObjectPath"].Value;
$row.ObjectID = $publishedEvent.Fields["ObjectID"].Value;
$row.EndTime = $publishedEvent.Fields["EndTime"].Value;
$row.StartTime = $publishedEvent.Fields["StartTime"].Value;
$row.RequestID = $publishedEvent.Fields["RequestID"].Value;
$row.ReEncoding = $publishedEvent.Fields["TextData"].Value;
$dt.Rows.Add($row)
}
}
$dt
}