[jira] [Created] (DRILL-3493) Alter session command with an option to cancel query in a particular phase of execution

["Victoria Markman (JIRA)" <ji...@apache.org>]

Victoria Markman created DRILL-3493:
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             Summary: Alter session command with an option to cancel query in a particular phase of execution
                 Key: DRILL-3493
                 URL: https://issues.apache.org/jira/browse/DRILL-3493
             Project: Apache Drill
          Issue Type: New Feature
          Components: Execution - Flow
            Reporter: Victoria Markman
            Assignee: Chris Westin
            Priority: Critical


This proposal is to implement: 
"alter session cancel <execution phase> = true|false".
where <execution phase> is an entry point for query cancellation, like say "sort" or "disk based sort" , etc.

When this option is set, if query reaches this point, forman would issue cancel.
This way: we can easily test correctness of query cancellation in different types of queries.



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