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https://issues.apache.org/jira/browse/HIVE-3968?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Namit Jain updated HIVE-3968:
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Status: Open (was: Patch Available)
comments
> Enhance logging in TableAccessInfo
> ----------------------------------
>
> Key: HIVE-3968
> URL: https://issues.apache.org/jira/browse/HIVE-3968
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: Kevin Wilfong
> Assignee: Kevin Wilfong
> Attachments: HIVE-3968.1.patch.txt, HIVE-3968.2.patch.txt
>
>
> Based on what is currently available in the TableAccessInfo we can infer when
> it would be a good idea to add bucketing/sorting metadata for tables.
> However, we can't easily tell if we're already getting the benefits of
> bucketing/sorting.
> This information can be improved by
> a) storing the input table/partition objects so that we can tell if the
> tables/partitions are already bucketed/sorted
> b) running the TableAccessAnalyzer after the logical optimizer, so that we
> can tell from the operators whether or not we are already getting benefits
> (bucketed/sort merge map joins or map group bys)
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