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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-20850) Push case conditional from projections to dimension tables if possible
Date Fri, 09 Nov 2018 10:49:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-20850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16681244#comment-16681244
] 

Hive QA commented on HIVE-20850:
--------------------------------

| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  0s{color} |
{color:green} The patch does not contain any @author tags. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 38s{color} | {color:blue}
Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  6m 35s{color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 35s{color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m  1s{color}
| {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m 26s{color} | {color:blue}
accumulo-handler in master has 21 extant Findbugs warnings. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m 27s{color} | {color:blue}
hbase-handler in master has 15 extant Findbugs warnings. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  3m 38s{color} | {color:blue}
ql in master has 2315 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 15s{color} |
{color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m  9s{color} | {color:blue}
Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 55s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 32s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m 32s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m  1s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m  0s{color}
| {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  4m 54s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 15s{color} |
{color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 12s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 29m 28s{color} | {color:black}
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|| Subsystem || Report/Notes ||
| Optional Tests |  asflicense  javac  javadoc  findbugs  checkstyle  compile  |
| uname | Linux hiveptest-server-upstream 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1+deb8u1 (2016-09-03)
x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /data/hiveptest/working/yetus_PreCommit-HIVE-Build-14830/dev-support/hive-personality.sh
|
| git revision | master / 961224c |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| modules | C: accumulo-handler hbase-handler ql U: . |
| Console output | http://104.198.109.242/logs//PreCommit-HIVE-Build-14830/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> 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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