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https://issues.apache.org/jira/browse/HIVE-3891?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vikram Dixit K updated HIVE-3891:
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Attachment: auto_sortmerge_join_1.q.out
auto_sortmerge_join_1.q
Hi Namit,
I have added some more variations to the queries in auto_sortmerge_join_1.q. I
originally did not catch that there was a SMB map join in stage-1. That as you
say is correct. One thing I see is that if I try to join sorted, bucketed
tables on different keys (last join in the attached file), I see a SMB Map join
operator followed by a reduce side join. It seems like the reduce side join
could actually become a map join operator. Is this possible?
Thanks
Vikram.
> physical optimizer changes for auto sort-merge join
> ---------------------------------------------------
>
> Key: HIVE-3891
> URL: https://issues.apache.org/jira/browse/HIVE-3891
> Project: Hive
> Issue Type: Bug
> Reporter: Namit Jain
> Assignee: Namit Jain
> Attachments: auto_sortmerge_join_1.q, auto_sortmerge_join_1.q.out,
> hive.3891.1.patch, hive.3891.2.patch, hive.3891.3.patch, hive.3891.4.patch,
> hive.3891.5.patch, hive.3891.6.patch, hive.3891.7.patch
>
>
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