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https://issues.apache.org/jira/browse/IMPALA-10395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aman Sinha updated IMPALA-10395:
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Issue Type: Improvement (was: Bug)
> Evaluate and improve broadcast vs partition costing formula
> -----------------------------------------------------------
>
> Key: IMPALA-10395
> URL: https://issues.apache.org/jira/browse/IMPALA-10395
> Project: IMPALA
> Issue Type: Improvement
> Components: Frontend
> Affects Versions: Impala 3.4.0
> Reporter: Aman Sinha
> Assignee: Aman Sinha
> Priority: Major
>
> IMPALA-10287 adds tuning knobs for incorporating the join operator's degree
> of parallelism (dop) and broadcast-to-partition factor in the costing of the
> build side of a join when comparing broadcast vs partition distribution.
> This JIRA is a follow-on to do a performance evaluation by varying the dop
> and/or the broadcast-to-partition factor and determine what a reasonable
> correlation function should be.
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