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https://issues.apache.org/jira/browse/HBASE-19064?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16526152#comment-16526152
 ] 

Hadoop QA commented on HBASE-19064:
-----------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 
21s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} hbaseanti {color} | {color:green}  0m  
0s{color} | {color:green} Patch does not have any anti-patterns. {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:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m 
 0s{color} | {color:green} The patch appears to include 53 new or modified test 
files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
26s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  4m 
22s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  6m 
16s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  2m 
14s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} refguide {color} | {color:blue}  4m 
42s{color} | {color:blue} branch has no errors when building the reference 
guide. See footer for rendered docs, which you should manually inspect. {color} 
|
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  3m 
52s{color} | {color:green} branch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m  
0s{color} | {color:blue} Skipped patched modules with no Java source: . {color} 
|
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  5m 
21s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  3m 
57s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
13s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  4m 
10s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  6m 
21s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green}  6m 
21s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red}  6m 21s{color} 
| {color:red} root generated 2 new + 1293 unchanged - 2 fixed = 1295 total (was 
1295) {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  2m 
15s{color} | {color:red} root: The patch generated 2 new + 1490 unchanged - 48 
fixed = 1492 total (was 1538) {color} |
| {color:red}-1{color} | {color:red} rubocop {color} | {color:red}  0m 
18s{color} | {color:red} The patch generated 45 new + 318 unchanged - 16 fixed 
= 363 total (was 334) {color} |
| {color:orange}-0{color} | {color:orange} ruby-lint {color} | {color:orange}  
0m 15s{color} | {color:orange} The patch generated 60 new + 501 unchanged - 3 
fixed = 561 total (was 504) {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:blue}0{color} | {color:blue} refguide {color} | {color:blue}  4m 
15s{color} | {color:blue} patch has no errors when building the reference 
guide. See footer for rendered docs, which you should manually inspect. {color} 
|
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  4m 
 3s{color} | {color:green} patch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green}  
8m 55s{color} | {color:green} Patch does not cause any errors with Hadoop 2.7.4 
or 3.0.0. {color} |
| {color:green}+1{color} | {color:green} hbaseprotoc {color} | {color:green}  
5m 29s{color} | {color:green} the patch passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m  
0s{color} | {color:blue} Skipped patched modules with no Java source: . {color} 
|
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  6m  
0s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  3m 
56s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}246m 
22s{color} | {color:green} root in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  3m 
 5s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}328m 56s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:b002b0b |
| JIRA Issue | HBASE-19064 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12929509/HBASE-19064.master.v2.patch
 |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  shadedjars  
hadoopcheck  hbaseanti  checkstyle  compile  cc  hbaseprotoc  rubocop  
ruby_lint  refguide  |
| uname | Linux 77b4be2f18c8 4.4.0-104-generic #127-Ubuntu SMP Mon Dec 11 
12:16:42 UTC 2017 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | 
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/component/dev-support/hbase-personality.sh
 |
| git revision | master / 74e5c776b3 |
| maven | version: Apache Maven 3.5.4 
(1edded0938998edf8bf061f1ceb3cfdeccf443fe; 2018-06-17T18:33:14Z) |
| Default Java | 1.8.0_171 |
| refguide | 
https://builds.apache.org/job/PreCommit-HBASE-Build/13432/artifact/patchprocess/branch-site/book.html
 |
| findbugs | v3.1.0-RC3 |
| javac | 
https://builds.apache.org/job/PreCommit-HBASE-Build/13432/artifact/patchprocess/diff-compile-javac-root.txt
 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HBASE-Build/13432/artifact/patchprocess/diff-checkstyle-root.txt
 |
| rubocop | v0.57.2 |
| rubocop | 
https://builds.apache.org/job/PreCommit-HBASE-Build/13432/artifact/patchprocess/diff-patch-rubocop.txt
 |
| ruby-lint | v2.3.1 |
| ruby-lint | 
https://builds.apache.org/job/PreCommit-HBASE-Build/13432/artifact/patchprocess/diff-patch-ruby-lint.txt
 |
| refguide | 
https://builds.apache.org/job/PreCommit-HBASE-Build/13432/artifact/patchprocess/patch-site/book.html
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/13432/testReport/ |
| Max. process+thread count | 4683 (vs. ulimit of 10000) |
| modules | C: hbase-protocol-shaded hbase-client hbase-replication 
hbase-procedure hbase-server hbase-shell . U: . |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/13432/console |
| Powered by | Apache Yetus 0.7.0   http://yetus.apache.org |


This message was automatically generated.



> Synchronous replication for HBase
> ---------------------------------
>
>                 Key: HBASE-19064
>                 URL: https://issues.apache.org/jira/browse/HBASE-19064
>             Project: HBase
>          Issue Type: New Feature
>          Components: Replication
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>            Priority: Major
>             Fix For: 3.0.0
>
>         Attachments: HBASE-19064.master.patch, HBASE-19064.master.v1.patch, 
> HBASE-19064.master.v2.patch
>
>
> The guys from Alibaba made a presentation on HBaseCon Asia about the 
> synchronous replication for HBase. We(Xiaomi) think this is a very useful 
> feature for HBase so we want to bring it into the community version.
> This is a big feature so we plan to do it in a feature branch.



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