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Posted to dev@hive.apache.org by "Szehon Ho (JIRA)" <ji...@apache.org> on 2014/12/03 02:09:12 UTC

[jira] [Assigned] (HIVE-8640) Support hints of SMBJoin [Spark Branch]

     [ https://issues.apache.org/jira/browse/HIVE-8640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Szehon Ho reassigned HIVE-8640:
-------------------------------

    Assignee: Szehon Ho

> Support hints of SMBJoin [Spark Branch]
> ---------------------------------------
>
>                 Key: HIVE-8640
>                 URL: https://issues.apache.org/jira/browse/HIVE-8640
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Spark
>            Reporter: Szehon Ho
>            Assignee: Szehon Ho
>
> HIVE-8202 supports conversion of join to SMB Join automatically, which relies on the configuration property: "hive.auto.convert.sortmerge.join.bigtable.selection.policy".  
> This task is to support conversion based on map-hints, instead of this policy.  As hints are deprecated, this would not be the primary policy in line with MapReduce, but can be available as a backup to achieve feature parity.



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