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From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-9503) Update 'hive.auto.convert.join.noconditionaltask.*' descriptions
Date Thu, 29 Jan 2015 00:40:35 GMT

    [ https://issues.apache.org/jira/browse/HIVE-9503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14296154#comment-14296154
] 

Xuefu Zhang commented on HIVE-9503:
-----------------------------------

I'm not sure of the difference between backup task and the "conditional task" that these two
properties are referring to, but I don't feel we need a property to control whether to have
a backup task. As long as we auto converted a join, we should have a backup task.

> 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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