[jira] [Comment Edited] (HIVE-8793) Make sure multi-insert works with map join [Spark Branch]

["Xuefu Zhang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-8793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14204808#comment-14204808 ] 

Xuefu Zhang edited comment on HIVE-8793 at 11/10/14 2:44 PM:
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It's fine to make it a physical optimizer. For clone to work map, it seems we can make it as a field of SparkWork.
However, this might be complicated in some cases. Let's do some research and disable MJ optimization if it turns out to be too complicated.


was (Author: xuefuz):
It's fine to make it a physical optimizer. For clone to work map, it seems we can make it as a field of SparkWork.

> Make sure multi-insert works with map join [Spark Branch]
> ---------------------------------------------------------
>
>                 Key: HIVE-8793
>                 URL: https://issues.apache.org/jira/browse/HIVE-8793
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Spark
>    Affects Versions: spark-branch
>            Reporter: Chao
>
> Currently, HIVE-8622 is implemented based on an assumption, that for a map join query, a BaseWork would not have multiple children. By testing through subquery_multiinsert.q did reveal that's the case. But, we need to investigate on this, and make sure this won't happen in general.



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