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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-20183) Inserting from bucketed table can cause data loss, if the source table contains empty buckets
Date Mon, 16 Jul 2018 19:54:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-20183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16545677#comment-16545677
] 

Hive QA commented on HIVE-20183:
--------------------------------

| (/) *{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:green}+1{color} | {color:green} mvninstall {color} | {color:green}  8m 23s{color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m  6s{color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 40s{color}
| {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  4m 16s{color} | {color:blue}
ql in master has 2273 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m  3s{color} |
{color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 33s{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:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 44s{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 29s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 59s{color} |
{color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 15s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 25m  6s{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-12641/dev-support/hive-personality.sh
|
| git revision | master / 34adf31 |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| modules | C: ql U: ql |
| Console output | http://104.198.109.242/logs//PreCommit-HIVE-Build-12641/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> Inserting from bucketed table can cause data loss, if the source table contains empty
buckets
> ---------------------------------------------------------------------------------------------
>
>                 Key: HIVE-20183
>                 URL: https://issues.apache.org/jira/browse/HIVE-20183
>             Project: Hive
>          Issue Type: Bug
>          Components: Operators
>            Reporter: Peter Vary
>            Assignee: Peter Vary
>            Priority: Major
>         Attachments: HIVE-20183.patch
>
>
> Could be reproduced by the following:
> {code}
> set hive.enforce.bucketing=true;
> set hive.enforce.sorting=true;
> set hive.optimize.bucketingsorting=true;
> create table bucket1 (id int, val string) clustered by (id) sorted by (id ASC) INTO 4
BUCKETS;
> insert into bucket1 values (1, 'abc'), (3, 'abc');
> select * from bucket1;
> +-------------+--------------+
> | bucket1.id  | bucket1.val  |
> +-------------+--------------+
> | 3           | abc          |
> | 1           | abc          |
> +-------------+--------------+
> create table bucket2 like bucket1;
> insert overwrite table bucket2 select * from bucket1;
> select * from bucket2;
> +-------------+--------------+
> | bucket2.id  | bucket2.val  |
> +-------------+--------------+
> | 1           | abc          |
> +-------------+--------------+
> {code}



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