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https://issues.apache.org/jira/browse/IMPALA-9255?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong updated IMPALA-9255:
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Summary: Avoid unnecessary concurrent resource consumption by fragments.
(was: Take plan dependencies into account for resource consumption)
> Avoid unnecessary concurrent resource consumption by fragments.
> ---------------------------------------------------------------
>
> Key: IMPALA-9255
> URL: https://issues.apache.org/jira/browse/IMPALA-9255
> Project: IMPALA
> Issue Type: Improvement
> Components: Frontend
> Reporter: Tim Armstrong
> Priority: Major
> Labels: multithreading
>
> In Planner.computeResourceReqs(), we assume that all fragment's peak resource
> consumption occurs at the same time. In actually, with the separate join
> build, there are dependencies between fragments and we could take those into
> account to reduce the estimated resource requirements.
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