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https://issues.apache.org/jira/browse/HIVE-9503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14296112#comment-14296112
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Szehon Ho commented on HIVE-9503:
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Well its not overriding the meaning, the value means the same thing (size of
small-tables), except for the clause that it depends on the first property.
The name also makes sense as we don't use a conditional task in Spark. So I
think having a Spark-only property for size of small-tables in mapjoin might be
more confusing, as users will need to set both properties to get the same
behavior in different execution engines.
> 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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