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https://issues.apache.org/jira/browse/HIVE-18866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16483559#comment-16483559
 ] 

Hive QA commented on HIVE-18866:
--------------------------------

| (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:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
36s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  6m 
36s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 
11s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
36s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m 
26s{color} | {color:blue} storage-api in master has 48 extant Findbugs 
warnings. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 13m 
42s{color} | {color:red} branch/itests/hive-jmh cannot run convertXmlToText 
from findbugs {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  2m 
51s{color} | {color:blue} standalone-metastore in master has 216 extant 
Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
24s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m  
8s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 
36s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 
11s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m 
11s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 
11s{color} | {color:red} storage-api: The patch generated 4 new + 109 unchanged 
- 0 fixed = 113 total (was 109) {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 
10s{color} | {color:red} itests/hive-jmh: The patch generated 8 new + 0 
unchanged - 0 fixed = 8 total (was 0) {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 
15s{color} | {color:red} standalone-metastore: The patch generated 1 new + 13 
unchanged - 3 fixed = 14 total (was 16) {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red}  0m  
0s{color} | {color:red} The patch has 5 line(s) that end in whitespace. Use git 
apply --whitespace=fix <<patch_file>>. Refer https://git-scm.com/docs/git-apply 
{color} |
| {color:green}+1{color} | {color:green} xml {color} | {color:green}  0m  
2s{color} | {color:green} The patch has no ill-formed XML file. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 10m  
0s{color} | {color:red} patch/itests/hive-jmh cannot run convertXmlToText from 
findbugs {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
30s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
13s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 46m 59s{color} | 
{color:black} {color} |
\\
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|| Subsystem || Report/Notes ||
| Optional Tests |  asflicense  javac  javadoc  xml  compile  findbugs  
checkstyle  |
| 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-11129/dev-support/hive-personality.sh
 |
| git revision | master / 7b61c76 |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.1 |
| findbugs | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-11129/yetus/branch-findbugs-itests_hive-jmh.txt
 |
| checkstyle | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-11129/yetus/diff-checkstyle-storage-api.txt
 |
| checkstyle | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-11129/yetus/diff-checkstyle-itests_hive-jmh.txt
 |
| checkstyle | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-11129/yetus/diff-checkstyle-standalone-metastore.txt
 |
| whitespace | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-11129/yetus/whitespace-eol.txt
 |
| findbugs | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-11129/yetus/patch-findbugs-itests_hive-jmh.txt
 |
| modules | C: storage-api itests/hive-jmh standalone-metastore U: . |
| Console output | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-11129/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> Semijoin: Implement a Long -> Hash64 vector fast-path
> -----------------------------------------------------
>
>                 Key: HIVE-18866
>                 URL: https://issues.apache.org/jira/browse/HIVE-18866
>             Project: Hive
>          Issue Type: Improvement
>          Components: Vectorization
>            Reporter: Gopal V
>            Assignee: Sergey Shelukhin
>            Priority: Major
>              Labels: performance
>         Attachments: 0001-hash64-WIP.patch, HIVE-18866.01.patch, 
> HIVE-18866.02.patch, HIVE-18866.03.patch, HIVE-18866.04.patch, 
> HIVE-18866.patch, perf-hash64-long.png
>
>
> A significant amount of CPU is wasted with JMM restrictions on byte[] arrays.
> To transform from one Long -> another Long, this goes into a byte[] array, 
> which shows up as a hotspot.
> !perf-hash64-long.png!



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