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https://issues.apache.org/jira/browse/HIVE-69?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Carl Steinbach updated HIVE-69:
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Fix Version/s: 0.3.0
(was: 0.5.0)
> genMapRedTasks does not use the tree walker and uses implicit state which
> makes it difficult to enhance
> -------------------------------------------------------------------------------------------------------
>
> Key: HIVE-69
> URL: https://issues.apache.org/jira/browse/HIVE-69
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Namit Jain
> Assignee: Namit Jain
> Fix For: 0.3.0
>
> Attachments: patch.txt
>
>
> In SemanticAnalyzer, genmapredtasks() does not use a tree walker. For
> map-side joins, the taskplan needs to be enhanced to be possibly
> broken at MapSink also. Basically, the code is very difficult to enhance
> since there are implicit assumptions that reduce sink is the only
> operator where the plan breaks.
> This should be enhanced so that the user can implement their own task
> generation logic which is independent of the tree walking.
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