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Posted to issues-all@impala.apache.org by "Aman Sinha (Jira)" <ji...@apache.org> on 2021/02/11 23:44:00 UTC
[jira] [Updated] (IMPALA-10395) Evaluate and improve broadcast vs
partition costing formula
[ https://issues.apache.org/jira/browse/IMPALA-10395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Aman Sinha updated IMPALA-10395:
--------------------------------
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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