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From "Balazs Jeszenszky (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IMPALA-5662) Log all information relevant to admission control decision making
Date Thu, 13 Jul 2017 20:52:00 GMT
Balazs Jeszenszky created IMPALA-5662:
-----------------------------------------

             Summary: Log all information relevant to admission control decision making
                 Key: IMPALA-5662
                 URL: https://issues.apache.org/jira/browse/IMPALA-5662
             Project: IMPALA
          Issue Type: Improvement
          Components: Backend
            Reporter: Balazs Jeszenszky
            Priority: Minor


Currently, when making a decision whether to admit a query or not, the log has the following
format:

{code:java}
I0705 14:43:04.031771  7388 admission-controller.cc:442] Stats: agg_num_running=1, agg_num_queued=0,
agg_mem_reserved=486.74 MB,  local_host(local_mem_admitted=0, num_admitted_running=0, num_queued=0,
backend_mem_reserved=56.07 MB)
{code}

Since it's also possible to queue queries due to one node not being able to reserve the required
memory, we should also log the max(backend_mem_reserved) across all nodes.



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