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https://issues.apache.org/jira/browse/HIVE-3990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14052979#comment-14052979
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Lefty Leverenz commented on HIVE-3990:
--------------------------------------
*hive.fetch.task.conversion.threshold* and *hive.fetch.task.aggr* are
documented in the wiki (also *hive.fetch.task.conversion*):
* [Configuration Properties -- hive.fetch.task.conversion.threshold |
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.fetch.task.conversion.threshold]
* [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 |
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.fetch.task.conversion]
Please review, especially the description of
*hive.fetch.task.conversion.threshold* because I added an explanation of the
negative default value. By the way:
# What are the input threshold units for *hive.fetch.task.conversion.threshold*
-- bytes?
# What does RS mean in the description of *hive.fetch.task.conversion* ("should
not have any aggregations or distincts (which incurs RS)")? My best guess is
ReduceSinkOperator, from [~navis]'s comment August 13, 2013 on HIVE-5056.
> Provide input threshold for direct-fetcher (HIVE-2925)
> ------------------------------------------------------
>
> Key: HIVE-3990
> URL: https://issues.apache.org/jira/browse/HIVE-3990
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: Navis
> Assignee: Navis
> Priority: Trivial
> Labels: TODOC13
> Fix For: 0.13.0
>
> Attachments: D8415.2.patch, D8415.3.patch, HIVE-3990.D8415.1.patch
>
>
> As a followup of HIVE-2925, add input threshold for fetch task conversion.
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