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From "Sambavi Muthukrishnan (JIRA)" <>
Subject [jira] [Commented] (HIVE-3501) Track table and keys used in joins and group bys for logging
Date Mon, 24 Sep 2012 06:23:07 GMT


Sambavi Muthukrishnan commented on HIVE-3501:
> Track table and keys used in joins and group bys for logging
> ------------------------------------------------------------
>                 Key: HIVE-3501
>                 URL:
>             Project: Hive
>          Issue Type: Task
>          Components: Query Processor
>    Affects Versions: 0.9.0
>            Reporter: Sambavi Muthukrishnan
>            Assignee: Sambavi Muthukrishnan
>            Priority: Minor
>   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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