[jira] [Resolved] (IMPALA-5662) Log all information relevant to admission control decision making

["Bikramjeet Vig (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-5662?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bikramjeet Vig resolved IMPALA-5662.
------------------------------------
       Resolution: Fixed
    Fix Version/s: Impala 3.1.0

> 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
>            Assignee: Bikramjeet Vig
>            Priority: Major
>              Labels: admission-control, observability, resource-management, supportability
>             Fix For: Impala 3.1.0
>
>
> 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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