When you parallel-load data into a columnstore index in SQL Server 2016, a "Non-yielding Scheduler" condition occurs.
The fix for this issue is included in the following cumulative updates for SQL Server:
Cumulative Update 2 for SQL Server 2016 SP1
About cumulative updates for SQL Server
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Learn about the terminology that Microsoft uses to describe software updates.