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https://issues.apache.org/jira/browse/HIVE-21500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16815678#comment-16815678
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Hive QA commented on HIVE-21500:
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| (/) *{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:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  1m 
47s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  7m 
18s{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 
36s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  1m 
14s{color} | {color:blue} standalone-metastore/metastore-server in master has 
180 extant Findbugs warnings. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m 
43s{color} | {color:blue} itests/hive-unit in master has 2 extant Findbugs 
warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
49s{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}  1m 
11s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m  
7s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m  
7s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
38s{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}  2m 
14s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
49s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
14s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 20m 59s{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-16926/dev-support/hive-personality.sh
 |
| git revision | master / 6a9e17c |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| modules | C: standalone-metastore/metastore-server itests/hive-unit U: . |
| Console output | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-16926/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> Disable conversion of managed table to external and vice versa at source.
> -------------------------------------------------------------------------
>
>                 Key: HIVE-21500
>                 URL: https://issues.apache.org/jira/browse/HIVE-21500
>             Project: Hive
>          Issue Type: Sub-task
>    Affects Versions: 4.0.0
>            Reporter: Sankar Hariappan
>            Assignee: Sankar Hariappan
>            Priority: Major
>              Labels: DR, Replication, pull-request-available
>         Attachments: HIVE-21500.01.patch, HIVE-21500.02.patch
>
>          Time Spent: 2h 20m
>  Remaining Estimate: 0h
>
> Couple of scenarios for Hive2 to Hive3(strict managed tables enabled) 
> replication where managed table is converted to external at source. 
> *Scenario-1: (ACID/MM table converted to external at target)*
> 1. Create non-ACID ORC format table.
> 2. Insert some rows
> 3. Replicate this create event which creates ACID table at target (due to 
> migration rule). Each insert event adds transactional metadata in HMS 
> corresponding to the current table.
> 4. Convert table to external table using ALTER command at source.
> *Scenario-2: (External table at target changes table location)*
> 1. Create non-ACID avro format table.
> 2. Insert some rows
> 3. Replicate this create event which creates external table at target (due to 
> migration rule). The data path is chosen under default external warehouse 
> directory.
> 4. Convert table to external table using ALTER command at source.
> It is unable to convert an ACID table to external table at target. Also, it 
> is hard to detect what would be the table type at target when perform this 
> ALTER table operation at source.
> So, it is decided to disable conversion of managed table at source (Hive2) to 
> EXTERNAL or vice-versa if the DB is enabled for replication and strict 
> managed is disabled.



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