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From "Chao (JIRA)" <>
Subject [jira] [Commented] (HIVE-8793) Make sure multi-insert works with map join [Spark Branch]
Date Mon, 10 Nov 2014 01:03:08 GMT


Chao commented on HIVE-8793:

[~xuefuz] Yes, doing HIVE-8118 before map-join may solve the issue. But, currently the multi-insertion
code is intertwined with SparkPlan and SparkTrans, so we need to split it from these. It would
be nice if we can make multi-insertion a physical optimizer triggered before SparkMapJoinResolver.

> Make sure multi-insert works with map join [Spark Branch]
> ---------------------------------------------------------
>                 Key: HIVE-8793
>                 URL:
>             Project: Hive
>          Issue Type: 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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