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Posted to dev@hive.apache.org by "Samuel Yuan (JIRA)" <ji...@apache.org> on 2013/01/25 20:33:12 UTC
[jira] [Updated] (HIVE-3940) Track columns accessed in each table
in a query
[ https://issues.apache.org/jira/browse/HIVE-3940?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Samuel Yuan updated HIVE-3940:
------------------------------
Attachment: HIVE-3940.1.patch.txt
> Track columns accessed in each table in a query
> -----------------------------------------------
>
> Key: HIVE-3940
> URL: https://issues.apache.org/jira/browse/HIVE-3940
> Project: Hive
> Issue Type: Task
> Components: Query Processor
> Reporter: Samuel Yuan
> Assignee: Samuel Yuan
> Priority: Minor
> Attachments: HIVE-3940.1.patch.txt
>
>
> Similar to partition access logs, we need to have columns access logs, so later we can build tools/reports to inform users if there are wasted columns in a table to be trimmed.
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