Assume that you use SQL Server 2019 with PolyBase feature installed. If you cancel a PolyBase query after it is started, the query may hang.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
This issue is fixed in thefollowing cumulative update for SQL Server:
Aboutcumulative updates for SQL Server:
Each new cumulativeupdate for SQL Server contains all the hotfixes and all the security fixes thatwere included with the previous cumulative update. Check out the latestcumulative updates for SQL Server: