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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-18910) Migrate to Murmur hash for shuffle and bucketing
Date Fri, 09 Mar 2018 11:23:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-18910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16392733#comment-16392733
] 

Hive QA commented on HIVE-18910:
--------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
|| || || || {color:brown} Prechecks {color} ||
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m  1s{color} | {color:blue}
Findbugs executables are not available. {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 33s{color} | {color:blue}
Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  6m 18s{color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  2m 16s{color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 30s{color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  2m 14s{color} |
{color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m  7s{color} | {color:blue}
Maven dependency ordering for patch {color} |
| {color:red}-1{color} | {color:red} mvninstall {color} | {color:red}  0m 15s{color} | {color:red}
streaming in the patch failed. {color} |
| {color:red}-1{color} | {color:red} mvninstall {color} | {color:red}  0m 40s{color} | {color:red}
ql in the patch failed. {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  2m 12s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  2m 12s{color} | {color:green}
the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 13s{color} | {color:red}
storage-api: The patch generated 3 new + 88 unchanged - 3 fixed = 91 total (was 91) {color}
|
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 13s{color} | {color:red}
serde: The patch generated 5 new + 215 unchanged - 2 fixed = 220 total (was 217) {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 38s{color} | {color:red}
ql: The patch generated 13 new + 604 unchanged - 3 fixed = 617 total (was 607) {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} javadoc {color} | {color:green}  2m  3s{color} |
{color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red}  0m 13s{color} | {color:red}
The patch generated 49 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 21m 30s{color} | {color:black}
{color} |
\\
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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-9569/dev-support/hive-personality.sh
|
| git revision | master / 73ccc44 |
| Default Java | 1.8.0_111 |
| mvninstall | http://104.198.109.242/logs//PreCommit-HIVE-Build-9569/yetus/patch-mvninstall-hcatalog_streaming.txt
|
| mvninstall | http://104.198.109.242/logs//PreCommit-HIVE-Build-9569/yetus/patch-mvninstall-ql.txt
|
| checkstyle | http://104.198.109.242/logs//PreCommit-HIVE-Build-9569/yetus/diff-checkstyle-storage-api.txt
|
| checkstyle | http://104.198.109.242/logs//PreCommit-HIVE-Build-9569/yetus/diff-checkstyle-serde.txt
|
| checkstyle | http://104.198.109.242/logs//PreCommit-HIVE-Build-9569/yetus/diff-checkstyle-ql.txt
|
| asflicense | http://104.198.109.242/logs//PreCommit-HIVE-Build-9569/yetus/patch-asflicense-problems.txt
|
| modules | C: storage-api serde hcatalog/streaming ql standalone-metastore U: . |
| Console output | http://104.198.109.242/logs//PreCommit-HIVE-Build-9569/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> Migrate to Murmur hash for shuffle and bucketing
> ------------------------------------------------
>
>                 Key: HIVE-18910
>                 URL: https://issues.apache.org/jira/browse/HIVE-18910
>             Project: Hive
>          Issue Type: Task
>            Reporter: Deepak Jaiswal
>            Assignee: Deepak Jaiswal
>            Priority: Major
>         Attachments: HIVE-18910.1.patch, HIVE-18910.2.patch
>
>
> Hive uses JAVA hash which is not as good as murmur for better distribution and efficiency
in bucketing a table.
> Migrate to murmur hash but still keep backward compatibility for existing users so that
they dont have to reload the existing tables.



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