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Posted to dev@hive.apache.org by "Xuefu Zhang (JIRA)" <ji...@apache.org> on 2014/12/08 06:19:12 UTC

[jira] [Assigned] (HIVE-8913) Make SparkMapJoinResolver handle runtime skew join [Spark Branch]

     [ https://issues.apache.org/jira/browse/HIVE-8913?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xuefu Zhang reassigned HIVE-8913:
---------------------------------

    Assignee: Rui Li  (was: Chao)

> Make SparkMapJoinResolver handle runtime skew join [Spark Branch]
> -----------------------------------------------------------------
>
>                 Key: HIVE-8913
>                 URL: https://issues.apache.org/jira/browse/HIVE-8913
>             Project: Hive
>          Issue Type: Improvement
>          Components: Spark
>            Reporter: Rui Li
>            Assignee: Rui Li
>
> Sub-task of HIVE-8406.
> Now we have {{SparkMapJoinResolver}} in place. But at the moment, it doesn't handle the map join task created by upstream SkewJoinResolver, i.e. those wrapped in a ConditionalTask. We have to implement this part for runtime skew join to work on spark. To do so, we can borrow logic from {{MapJoinResolver}}.



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