Laurel Hale created IMPALA-7162:
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             Summary: idle_query_timeout setting in Impala needs more 
clarification
                 Key: IMPALA-7162
                 URL: https://issues.apache.org/jira/browse/IMPALA-7162
             Project: IMPALA
          Issue Type: Documentation
          Components: Docs
    Affects Versions: Impala 2.6.0
            Reporter: Laurel Hale


1) Please refer to the following Impala documentation:

[http://impala.apache.org/docs/build3x/html/topics/impala_timeouts.html]

2) Please see the section where idle_query_timeout is explained.

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Request:-

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We've mentioned that idle_query_timeout cancels the query.

Can we please elaborate it further and mention that query still stays open 
(after being cancelled) and consumes a slot in Impala admission control? 
Therefore, though idle_query_timeout helps in saving some resources at Impala 
end, you may still want to configure idle_Session_timeout to same value since 
idle_Session_timeout even closes the query for idle sessions (instead of just 
cancelling) though the requirement for it to trigger is session should stay 
idle.



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