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https://issues.apache.org/jira/browse/HIVE-9503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14296187#comment-14296187
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Xuefu Zhang commented on HIVE-9503:
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I see. I guess the overhead is bearable. It gives much better a user experience
than if we auto convert the task and the query fails, leaving the user in the
blue.
> Update 'hive.auto.convert.join.noconditionaltask.*' descriptions
> ----------------------------------------------------------------
>
> Key: HIVE-9503
> URL: https://issues.apache.org/jira/browse/HIVE-9503
> Project: Hive
> Issue Type: Bug
> Components: Configuration
> Reporter: Szehon Ho
> Priority: Minor
>
> 'hive.auto.convert.join.noconditionaltask' flag does not apply to Spark or
> Tez, and only to MR (which has the legacy conditional mapjoin)
> However, 'hive.auto.convert.join.noconditionaltask.size' flag does apply to
> Spark, Tez, and MR, even though the description indicates it only applies if
> the above flag is on, which is true only for MR.
> These configs should be updated to reflect this case.
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