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https://issues.apache.org/jira/browse/HIVE-3501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13467460#comment-13467460
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Carl Steinbach commented on HIVE-3501:
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I added a couple minor comments too. Looks really good overall.
> Track table and keys used in joins and group bys for logging
> ------------------------------------------------------------
>
> Key: HIVE-3501
> URL: https://issues.apache.org/jira/browse/HIVE-3501
> Project: Hive
> Issue Type: Task
> Components: Query Processor
> Affects Versions: 0.10.0
> Reporter: Sambavi Muthukrishnan
> Assignee: Sambavi Muthukrishnan
> Priority: Minor
> Attachments: table_access_keys.1.patch, table_access_keys.2.patch,
> table_access_keys.3.patch, table_access_keys.4.patch
>
> Original Estimate: 96h
> Remaining Estimate: 96h
>
> For all operators that could benefit from bucketing, it will be useful to
> keep track of and log the table names and key column names in order for the
> operator to be converted to the bucketed version. This task is to track this
> information for joins and group bys when the keys can be directly mapped back
> to table scans and columns on that table. This information will be tracked on
> the QueryPlan object so it is available to any pre/post execution hooks for
> logging.
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