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https://issues.apache.org/jira/browse/HIVE-3891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13590219#comment-13590219
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Vikram Dixit K commented on HIVE-3891:
--------------------------------------
Hi Namit,
Can you please create a review request. I see one issue in the
AbstractSMBJoinProcessor. The
{noformat}
String joinAlias =
bigTablePosition == 0 ?
joinCtx.getLeftAlias() : joinCtx.getRightAliases()[bigTablePosition -
1];
{noformat}
The joinCtx.getRightAliases() array size would be at most 2 in case of joining
against different keys. However the code that produces the bigTablePosition
traverses all the tables. If the big table position comes up as 2 in a
multi-way join, this code will cause an ArrayOutOfBounds exception. This needs
to be addressed.
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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