KB4531384 - FIX: Queries may fail in SQL Server 2019 when PolyBase is under stress and heavy cancellations

Applies to: SQL Server 2019 on LinuxSQL Server 2019 on Windows

Symptoms


Assume that you use PolyBase on an instance of SQL Server 2019. When the PolyBase is under stress and heavy cancellations, you may notice that queries may fail and wrong results may occur.

Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. 

Resolution


This issue is fixed in the following cumulative update for SQL Server:
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:

References


Learn about the terminology that Microsoft uses to describe software updates.