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Posted to issues@hive.apache.org by "Jason Dere (JIRA)" <ji...@apache.org> on 2018/04/27 19:47:00 UTC

[jira] [Commented] (HIVE-19332) Disable compute.query.using.stats for external table

    [ https://issues.apache.org/jira/browse/HIVE-19332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16456965#comment-16456965 ] 

Jason Dere commented on HIVE-19332:
-----------------------------------

[~gopalv] has pointed out that both this and HIVE-19333 can be accomplished by preventing external tables stats from showing up as complete stats.

> Disable compute.query.using.stats for external table
> ----------------------------------------------------
>
>                 Key: HIVE-19332
>                 URL: https://issues.apache.org/jira/browse/HIVE-19332
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Jason Dere
>            Priority: Major
>
> Hive can use statistics to answer queries like count(*). This can be problematic on external tables where another tool might add files that Hive doesn’t know about. In that case Hive will return incorrect results.



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