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https://issues.apache.org/jira/browse/HIVE-3891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13590250#comment-13590250
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Vikram Dixit K commented on HIVE-3891:
--------------------------------------
Hi Namit,
The test case I have is very similar to the star join case. I have a 4 way join
with 3 dimension tables and 1 fact table. All the joins are on different keys.
By default, the average partition size is used as the tie breaker for the
choice of big table. However when I run this query, I get the array out of
bounds exception as it chose the table from the 2nd join (T3 from below) as the
big table (index = 2). However, the joinCtx right alias has only one table. So
this resulted in a crash.
{noformat}
T1 \
J1.out \
T2 / J2.out \
T3 / J3.out (Final)
T4 /
{noformat}
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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