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https://issues.apache.org/jira/browse/HIVE-24793?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Panagiotis Garefalakis updated HIVE-24793:
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Summary: Compiler probe MJ selection candidate fallback (was: Compiler
probe MJ selection algorithm fallback)
> Compiler probe MJ selection candidate fallback
> ----------------------------------------------
>
> Key: HIVE-24793
> URL: https://issues.apache.org/jira/browse/HIVE-24793
> Project: Hive
> Issue Type: Sub-task
> Reporter: Panagiotis Garefalakis
> Assignee: Panagiotis Garefalakis
> Priority: Major
>
> As per discussion on #1286 current probe MJ selection algorithm:
> * selects best MJ candidate (currently based on the distinct row ratio)
> * does some further processing - which may bail out
> Bailing out for the best candidate doesn't necessarily mean that we can not
> use a less charming candidate. The extra compilation can be wrapped into to
> for loop instead of selecting the best candidate the first part could be
> implemented as a priority logic
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