Sergey Shelukhin commented on HIVE-19873:

Makes sense, +1 pending tests. I think I misread the patch

> Cleanup operation log on query cancellation after some delay
> ------------------------------------------------------------
>                 Key: HIVE-19873
>                 URL: https://issues.apache.org/jira/browse/HIVE-19873
>             Project: Hive
>          Issue Type: Bug
>          Components: HiveServer2
>    Affects Versions: 3.1.0, 4.0.0
>            Reporter: Prasanth Jayachandran
>            Assignee: Prasanth Jayachandran
>            Priority: Major
>         Attachments: HIVE-19873.1.patch
> When a query is executed using beeline and the query is cancelled due to 
> query timeout or kill query or triggers and when there is cursor on operation 
> log row set, the cursor can thrown an exception as cancel will cleanup the 
> operation log in the background. This can return a non-zero exit code in 
> beeline. Query cancellation on success should return exit code 0.
> Adding a delay to the cleanup of operation logging in operation cancel can 
> avoid the close during read. 

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