[
https://issues.apache.org/jira/browse/HIVE-17041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16616965#comment-16616965
]
Hive QA commented on HIVE-17041:
--------------------------------
| (x) *{color:red}-1 overall{color}* |
\\
\\
|| 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:brown} Patch Compile Tests {color} ||
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red} 0m
0s{color} | {color:red} The patch has 13 line(s) that end in whitespace. Use
git apply --whitespace=fix <<patch_file>>. Refer
https://git-scm.com/docs/git-apply {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
50s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 1m 30s{color} |
{color:black} {color} |
\\
\\
|| Subsystem || Report/Notes ||
| Optional Tests | asflicense |
| 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-13846/dev-support/hive-personality.sh
|
| git revision | master / a37827e |
| whitespace |
http://104.198.109.242/logs//PreCommit-HIVE-Build-13846/yetus/whitespace-eol.txt
|
| modules | C: ql U: ql |
| Console output |
http://104.198.109.242/logs//PreCommit-HIVE-Build-13846/yetus.txt |
| Powered by | Apache Yetus http://yetus.apache.org |
This message was automatically generated.
> Aggregate elimination with UNIQUE and NOT NULL column
> -----------------------------------------------------
>
> Key: HIVE-17041
> URL: https://issues.apache.org/jira/browse/HIVE-17041
> Project: Hive
> Issue Type: Sub-task
> Components: Logical Optimizer
> Affects Versions: 3.0.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Vineet Garg
> Priority: Major
> Attachments: HIVE-17041.1.patch
>
>
> If columns are part of a GROUP BY expression and they are UNIQUE and do not
> accept NULL values, i.e. PK or UK+NOTNULL, the _Aggregate_ operator can be
> transformed into a Project operator, as each row will end up in a different
> group.
> For instance, given that _pk_ is the PRIMARY KEY for the table, the GROUP BY
> could be removed from grouping columns for following query:
> {code:sql}
> SELECT pk, value1
> FROM table_1
> GROUP BY value1, pk, value2;
> {code}
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
