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https://issues.apache.org/jira/browse/IMPALA-7433?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong resolved IMPALA-7433.
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Resolution: Fixed
Fix Version/s: Impala 3.1.0
> Reduce volume of -v=1 logs on executors
> ---------------------------------------
>
> Key: IMPALA-7433
> URL: https://issues.apache.org/jira/browse/IMPALA-7433
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Affects Versions: Impala 3.1.0
> Reporter: Tim Armstrong
> Assignee: Tim Armstrong
> Priority: Major
> Fix For: Impala 3.1.0
>
>
> We're currently logging a lot of things per query on executors that is
> redundant or unnecessary, e.g.:
> * ExecQueryFInstances() and StartQueryFInstances() are both logged but are
> redundant
> * Some random low-level details are logged, e.g. "Max row batch queue size
> for scan node '0' in fragment instance '940cdcd50664a51:368ab6690000001e':
> 180"
> I think we should cut back the logging at -v=1, which is the default log
> level most deployments run at:
> * Do log key finstance lifecycle events that are useful to understand what
> finstances are running and if/when failures occurred
> * Don't log things redundantly
> * Don't log lower-level events that occur in the normal flow of query
> execution (e.g. memory limits, queue lengths). These things have limited
> diagnostic value and should be in the profile, if anywhere
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