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Posted to issues@impala.apache.org by "Dan Hecht (JIRA)" <ji...@apache.org> on 2017/04/17 21:16:41 UTC

[jira] [Created] (IMPALA-5216) Admission control queuing should be asyncronous

Dan Hecht created IMPALA-5216:
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             Summary: Admission control queuing should be asyncronous
                 Key: IMPALA-5216
                 URL: https://issues.apache.org/jira/browse/IMPALA-5216
             Project: IMPALA
          Issue Type: Improvement
          Components: Backend
            Reporter: Dan Hecht


Currently, admission control queuing occurs synchronously w.r.t. the {{ExecuteStatement}} client RPC. That is, a query handle is not returned until the query is admitted.

Instead, the queuing should occur on the asynchronous path.  That way, the client gets a query handle back immediately and can e.g. cancel a query that is in the admission control queue.

We'll also need a way to better expose the progress of a query handle (related to IMPALA-124). E.g. that the query is queued for admission and what resource(s) it's waiting on.




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