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https://issues.apache.org/jira/browse/HIVE-6492?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13920146#comment-13920146
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Gunther Hagleitner commented on HIVE-6492:
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[~selinazh] - sorry if i messed up the metadata only part. Can you give me an 
example where the patch doesn't work?

> limit partition number involved in a table scan
> -----------------------------------------------
>
>                 Key: HIVE-6492
>                 URL: https://issues.apache.org/jira/browse/HIVE-6492
>             Project: Hive
>          Issue Type: New Feature
>          Components: Query Processor
>    Affects Versions: 0.12.0
>            Reporter: Selina Zhang
>             Fix For: 0.13.0
>
>         Attachments: HIVE-6492.1.patch.txt, HIVE-6492.2.patch.txt, 
> HIVE-6492.3.patch.txt, HIVE-6492.4.patch.txt, HIVE-6492.4.patch_suggestion, 
> HIVE-6492.5.patch.txt
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> To protect the cluster, a new configure variable 
> "hive.limit.query.max.table.partition" is added to hive configuration to
> limit the table partitions involved in a table scan. 
> The default value will be set to -1 which means there is no limit by default. 
> This variable will not affect "metadata only" query.



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