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From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-8718) Refactoring: move mapLocalWork field from MapWork to BaseWork
Date Fri, 14 Nov 2014 15:23:33 GMT

    [ https://issues.apache.org/jira/browse/HIVE-8718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14212374#comment-14212374
] 

Xuefu Zhang commented on HIVE-8718:
-----------------------------------

Please note that the patch here was for trunk. It's not Spark branch specific.

> Refactoring: move mapLocalWork field from MapWork to BaseWork
> -------------------------------------------------------------
>
>                 Key: HIVE-8718
>                 URL: https://issues.apache.org/jira/browse/HIVE-8718
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Query Processor
>    Affects Versions: 0.15.0
>            Reporter: Xuefu Zhang
>            Assignee: Xuefu Zhang
>            Priority: Minor
>             Fix For: 0.15.0
>
>         Attachments: HIVE-8718.patch
>
>
> Currently MapRedLocalWork instance is a field at MapWork. This is MR specific where small
table input to map join is always from a MapWork, which isn't true for other execution engine
where works doesn't need to be chopped at RS.
> The refactoring moves the MapRedLocalWork to its parent class, BaseWork. Purely refactoring.
No behavor change is expected. Test output might need to be updated though.



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