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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-21465) Introduce a base abstract VectorExpression to eliminate further code duplications
Date Thu, 21 Mar 2019 23:01:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-21465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16798536#comment-16798536
] 

Hive QA commented on HIVE-21465:
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| (x) *{color:red}-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:green}+1{color} | {color:green} mvninstall {color} | {color:green} 10m 45s{color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 17s{color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 42s{color}
| {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  4m 22s{color} | {color:blue}
ql in master has 2255 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m  4s{color} |
{color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 40s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 13s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m 13s{color} | {color:green}
the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 42s{color} | {color:red}
ql: The patch generated 3 new + 9 unchanged - 23 fixed = 12 total (was 32) {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 26s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m  3s{color} |
{color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red}  0m 14s{color} | {color:red}
The patch generated 1 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 28m 16s{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-16618/dev-support/hive-personality.sh
|
| git revision | master / 38682a4 |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| checkstyle | http://104.198.109.242/logs//PreCommit-HIVE-Build-16618/yetus/diff-checkstyle-ql.txt
|
| asflicense | http://104.198.109.242/logs//PreCommit-HIVE-Build-16618/yetus/patch-asflicense-problems.txt
|
| modules | C: ql U: ql |
| Console output | http://104.198.109.242/logs//PreCommit-HIVE-Build-16618/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> Introduce a base abstract VectorExpression to eliminate further code duplications
> ---------------------------------------------------------------------------------
>
>                 Key: HIVE-21465
>                 URL: https://issues.apache.org/jira/browse/HIVE-21465
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Laszlo Bodor
>            Assignee: Laszlo Bodor
>            Priority: Major
>         Attachments: HIVE-21465.01.patch, HIVE-21465.02.patch
>
>
> In vectorized expressions, from time to time, I see a similar/same logic to be repeated,
which always consists of some stuff like:
> 1. some inner loops (even the comments are the same)
> {code}
> grep -iRH "Set isNull before call in case it changes it mind" | grep "ql/src/java/org/apache/hadoop/hive/ql/exec/vector/expressions/"
> {code}
> 2. call to an actual "business logic" function ==> 1 line which could be abstracted...
and it has been abstracted in hive codebase in n different cases.
> However, an abstract BaseVectorExpression would not force anybody to extend it instead
of VectorExpression and not copy the code again, but it could be a good start and an example.



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