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Posted to dev@hive.apache.org by "Lefty Leverenz (JIRA)" <ji...@apache.org> on 2014/07/06 01:35:34 UTC

[jira] [Commented] (HIVE-5793) Update hive-default.xml.template for HIVE-4002

    [ https://issues.apache.org/jira/browse/HIVE-5793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14052986#comment-14052986 ] 

Lefty Leverenz commented on HIVE-5793:
--------------------------------------

> So does a negative value mean that file lengths are not calculated, therefore fetch task conversion will always occur if hive.fetch.task.conversion is true?

[~gopalv] explained in a comment on HIVE-3990 ([https://issues.apache.org/jira/browse/HIVE-3990?focusedCommentId=14052977&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14052977]):

{quote}
-1 does not mean "disabled". it means "infinite"
{quote}

But the description says "Input threshold for applying hive.fetch.task.conversion" and not "Input threshold for converting to a fetch task -- so presumably the "minimal" or "more" setting of hive.fetch.task.conversion still has an effect.

Anyway, all three fetch task parameters are documented in the wiki here:

* [Configuration Properties -- hive.fetch.task.conversion | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.fetch.task.conversion]
* [Configuration Properties -- hive.fetch.task.aggr | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.fetch.task.aggr]
* [Configuration Properties -- hive.fetch.task.conversion.threshold | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.fetch.task.conversion.threshold]

> Update hive-default.xml.template for HIVE-4002
> ----------------------------------------------
>
>                 Key: HIVE-5793
>                 URL: https://issues.apache.org/jira/browse/HIVE-5793
>             Project: Hive
>          Issue Type: Improvement
>          Components: Configuration
>            Reporter: Navis
>            Assignee: Navis
>            Priority: Trivial
>             Fix For: 0.13.0
>
>         Attachments: HIVE-5793.1.patch.txt, HIVE-5793.2.patch.txt, HIVE-5793.3.patch.txt
>
>
> Addressing https://issues.apache.org/jira/browse/HIVE-3990?focusedCommentId=13818388&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13818388



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