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From "Chao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-8970) Enable map join optimization only when hive.auto.convert.join is true [Spark Branch]
Date Mon, 01 Dec 2014 19:17:12 GMT

    [ https://issues.apache.org/jira/browse/HIVE-8970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14230272#comment-14230272
] 

Chao commented on HIVE-8970:
----------------------------

Also, for join38.q I ran the query on CLI local mode with spark.master=local[4], and the result
was correct, but running unit test gave different result.


> Enable map join optimization only when hive.auto.convert.join is true [Spark Branch]
> ------------------------------------------------------------------------------------
>
>                 Key: HIVE-8970
>                 URL: https://issues.apache.org/jira/browse/HIVE-8970
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Spark
>    Affects Versions: spark-branch
>            Reporter: Chao
>            Assignee: Chao
>             Fix For: spark-branch
>
>         Attachments: HIVE-8970.1-spark.patch, HIVE-8970.2-spark.patch
>
>
> Right now, in Spark branch we enable MJ without looking at this configuration. The related
code in {{SparkMapJoinOptimizer}} is commented out. We should only enable MJ when the flag
is true.



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