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https://issues.apache.org/jira/browse/IMPALA-4063?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Ho updated IMPALA-4063:
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Parent Issue: IMPALA-5865 (was: IMPALA-3902)
> Make fragment instance reports per-query (or per-host) instead of
> per-fragment instance.
> ----------------------------------------------------------------------------------------
>
> Key: IMPALA-4063
> URL: https://issues.apache.org/jira/browse/IMPALA-4063
> Project: IMPALA
> Issue Type: Sub-task
> Components: Distributed Exec
> Affects Versions: Impala 2.7.0
> Reporter: Sailesh Mukil
> Assignee: Sailesh Mukil
> Priority: Major
> Labels: performance
>
> Currently we send a report per-fragment instance to the coordinator every 5
> seconds (by default; modifiable via query option 'status_report_interval').
> For queries with a large number of fragment instances, this generates
> tremendous amounts of network traffic to the coordinator, which will only be
> aggravated with higher a DOP.
> We should instead queue per-fragment instance reports and send out a
> per-query report to the coordinator instead.
> For code references, see:
> PlanFragmentExecutor:: ReportProfile()
> PlanFragmentExecutor:: SendReport()
> FragmentExecState:: ReportStatusCb()
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