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https://issues.apache.org/jira/browse/HIVE-20850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16682041#comment-16682041
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Hive QA commented on HIVE-20850:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12947547/HIVE-20850.06.patch
{color:red}ERROR:{color} -1 due to build exiting with an error
Test results:
https://builds.apache.org/job/PreCommit-HIVE-Build/14841/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/14841/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-14841/
Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Tests exited with: Exception: Patch URL
https://issues.apache.org/jira/secure/attachment/12947547/HIVE-20850.06.patch
was found in seen patch url's cache and a test was probably run already on it.
Aborting...
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12947547 - PreCommit-HIVE-Build
> Push case conditional from projections to dimension tables if possible
> ----------------------------------------------------------------------
>
> Key: HIVE-20850
> URL: https://issues.apache.org/jira/browse/HIVE-20850
> Project: Hive
> Issue Type: Improvement
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Priority: Major
> Attachments: HIVE-20850.01.patch, HIVE-20850.01.patch,
> HIVE-20850.01.patch, HIVE-20850.02.patch, HIVE-20850.03.patch,
> HIVE-20850.04.patch, HIVE-20850.05.patch, HIVE-20850.06.patch
>
>
> noticed by [~gopalv]: If there is a project which could be only evaluated
> after the join; but the condition references only a single column from a
> small dimension table; hive will end up evaluating the same thing over and
> over again...
> {code}
> explain
> select s_store_name, s_store_id,
> sum(case when (d_day_name='Sunday') then ss_sales_price else null
> end) sun_sales,
> sum(case when (d_day_name='Monday') then ss_sales_price else null
> end) mon_sales,
> sum(case when (d_day_name='Tuesday') then ss_sales_price else null
> end) tue_sales,
> sum(case when (d_day_name='Wednesday') then ss_sales_price else null
> end) wed_sales,
> sum(case when (d_day_name='Thursday') then ss_sales_price else null
> end) thu_sales,
> sum(case when (d_day_name='Friday') then ss_sales_price else null
> end) fri_sales,
> sum(case when (d_day_name='Saturday') then ss_sales_price else null
> end) sat_sales
> from date_dim, store_sales, store
> where d_date_sk = ss_sold_date_sk and
> s_store_sk = ss_store_sk and
> s_gmt_offset = -6 and
> d_year = 1998
> group by s_store_name, s_store_id
> order by s_store_name,
> s_store_id,sun_sales,mon_sales,tue_sales,wed_sales,thu_sales,fri_sales,sat_sales
> limit 100;
> {code}
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