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https://issues.apache.org/jira/browse/HIVE-21739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16844945#comment-16844945
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Hive QA commented on HIVE-21739:
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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:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  1m 
41s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  7m 
39s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  6m 
58s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  2m 
31s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  1m 
15s{color} | {color:blue} standalone-metastore/metastore-server in master has 
183 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  7m  
8s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
26s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  7m 
56s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  7m 
24s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  7m 
24s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 
20s{color} | {color:red} standalone-metastore/metastore-server: The patch 
generated 2 new + 145 unchanged - 2 fixed = 147 total (was 147) {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  2m 
17s{color} | {color:red} root: The patch generated 2 new + 742 unchanged - 2 
fixed = 744 total (was 744) {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}  1m 
26s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  7m 
23s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
12s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 55m 15s{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 
3.16.43-2+deb8u5 (2017-09-19) x86_64 GNU/Linux |
| Build tool | maven |
| Personality | 
/data/hiveptest/working/yetus_PreCommit-HIVE-Build-17268/dev-support/hive-personality.sh
 |
| git revision | master / 8b8e702 |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| checkstyle | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-17268/yetus/diff-checkstyle-standalone-metastore_metastore-server.txt
 |
| checkstyle | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-17268/yetus/diff-checkstyle-root.txt
 |
| modules | C: standalone-metastore/metastore-server . U: . |
| Console output | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-17268/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> Make metastore DB backward compatible with pre-catalog versions of hive.
> ------------------------------------------------------------------------
>
>                 Key: HIVE-21739
>                 URL: https://issues.apache.org/jira/browse/HIVE-21739
>             Project: Hive
>          Issue Type: Sub-task
>    Affects Versions: 1.2.0, 2.1.1
>            Reporter: Aditya Shah
>            Assignee: Aditya Shah
>            Priority: Major
>             Fix For: 4.0.0
>
>         Attachments: HIVE-21739.1.patch, HIVE-21739.2.patch, 
> HIVE-21739.3.patch, HIVE-21739.4.patch, HIVE-21739.patch
>
>
> Since the addition of foreign key constraint between Database ('DBS') table 
> and catalogs ('CTLGS') table in HIVE-18755 we are able to run a simple create 
> database command with an older version of Metastore Server. This is due to 
> older versions having JDO schema as per older schema of 'DBS' which did not 
> have an additional 'CTLG_NAME' column.
> The error is as follows: 
> {code:java}
> org.apache.hadoop.hive.ql.metadata.HiveException: 
> MetaException(message:Exception thrown flushing changes to datastore)
> ....
> java.sql.BatchUpdateException: Cannot add or update a child row: a foreign 
> key constraint fails ("metastore_1238"."DBS", CONSTRAINT "CTLG_FK1" FOREIGN 
> KEY ("CTLG_NAME") REFERENCES "CTLGS" ("NAME"))
> {code}



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