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https://issues.apache.org/jira/browse/HIVE-22728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17035838#comment-17035838
 ] 

Hive QA commented on HIVE-22728:
--------------------------------

| (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}  2m  
5s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  8m 
 6s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 
45s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 
19s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  1m 
22s{color} | {color:blue} standalone-metastore/metastore-server in master has 
181 extant Findbugs warnings. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  3m 
53s{color} | {color:blue} ql in master has 1532 extant Findbugs warnings. 
{color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
28s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
30s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  2m 
17s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 
47s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m 
47s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 
24s{color} | {color:red} standalone-metastore/metastore-server: The patch 
generated 4 new + 724 unchanged - 80 fixed = 728 total (was 804) {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  1m 
26s{color} | {color:red} standalone-metastore/metastore-server generated 4 new 
+ 181 unchanged - 0 fixed = 185 total (was 181) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
34s{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} 35m 10s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:standalone-metastore/metastore-server |
|  |  
org.apache.hadoop.hive.metastore.model.MConstraint.dnCopyKeyFieldsFromObjectId(Object)
 might ignore java.lang.Exception  In MConstraint.java:In MConstraint.java |
|  |  
org.apache.hadoop.hive.metastore.model.MConstraint.dnCopyKeyFieldsFromObjectId(Persistable$ObjectIdFieldConsumer,
 Object) might ignore java.lang.Exception  In MConstraint.java: In 
MConstraint.java |
|  |  
org.apache.hadoop.hive.metastore.model.MConstraint.dnCopyKeyFieldsToObjectId(Object)
 might ignore java.lang.Exception  In MConstraint.java:In MConstraint.java |
|  |  
org.apache.hadoop.hive.metastore.model.MConstraint.dnCopyKeyFieldsToObjectId(Persistable$ObjectIdFieldSupplier,
 Object) might ignore java.lang.Exception  In MConstraint.java: In 
MConstraint.java |
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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 
3.16.43-2+deb8u5 (2017-09-19) x86_64 GNU/Linux |
| Build tool | maven |
| Personality | 
/data/hiveptest/working/yetus_PreCommit-HIVE-Build-20585/dev-support/hive-personality.sh
 |
| git revision | master / fcfc71b |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.1 |
| checkstyle | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-20585/yetus/diff-checkstyle-standalone-metastore_metastore-server.txt
 |
| findbugs | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-20585/yetus/new-findbugs-standalone-metastore_metastore-server.html
 |
| modules | C: metastore standalone-metastore/metastore-server ql U: . |
| Console output | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-20585/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> Limit the scope of uniqueness of constraint name to database
> ------------------------------------------------------------
>
>                 Key: HIVE-22728
>                 URL: https://issues.apache.org/jira/browse/HIVE-22728
>             Project: Hive
>          Issue Type: Wish
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Miklos Gergely
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: HIVE-22728.01.patch, HIVE-22728.02.patch
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Currently, constraint names are globally unique across all databases 
> (assumption is that this may have done by design). Nevertheless, though 
> behavior seems to be implementation specific, it would be interesting to 
> limit the scope to uniqueness per database.
> Currently we do not store database information with the constraints. To 
> change the scope to one db, we would need to store the DB_ID in the 
> KEY_CONSTRAINTS table in metastore when we create a constraint and add the 
> DB_ID to the PRIMARY KEY of that table. Some minor changes to the error 
> messages would be needed too, since otherwise it would be difficult to 
> identify the correct violation in queries that span across multiple 
> databases. Additionally, the SQL scripts will need to be updated to populate 
> the DB_ID when we upgrade to new version.



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