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https://issues.apache.org/jira/browse/IMPALA-4679?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong resolved IMPALA-4679.
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Resolution: Duplicate
I don't think we want to do a one-off for compute stats - the general solution
we're taking is to impose better memory constraints on all operators. Then
we'll be able to have better admission control policies.
> Impala to set query mem_limit automatically for compute stats
> -------------------------------------------------------------
>
> Key: IMPALA-4679
> URL: https://issues.apache.org/jira/browse/IMPALA-4679
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend, Frontend
> Affects Versions: Impala 2.8.0
> Reporter: Alan Choi
> Assignee: Marcel Kornacker
>
> With Multi-threading turned on for Compute Stats, the memory usage in the
> SCAN is a lot more deterministic. In fact, the memory usage in SCAN and AGG
> can be pre-determined in the planner. Therefore, it is feasible to set the
> mem_limit automatically for compute stats query.
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