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https://issues.apache.org/jira/browse/HIVE-8865?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14211899#comment-14211899
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Chao commented on HIVE-8865:
----------------------------

Yes, I think you are right. I basically copied the code from MR, but seems it 
can be improved a bit. Let me change it.

> Needs to set hashTableMemoryUsage for MapJoinDesc
> -------------------------------------------------
>
>                 Key: HIVE-8865
>                 URL: https://issues.apache.org/jira/browse/HIVE-8865
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Spark
>    Affects Versions: spark-branch
>            Reporter: Chao
>            Assignee: Chao
>         Attachments: HIVE-8865.1-spark.patch
>
>
> If this part is not done, hashTableMemoryUsage is always 0.0, which will 
> cause MapJoinMemoryExhaustionException.



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