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https://issues.apache.org/jira/browse/RATIS-167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16624219#comment-16624219
 ] 

Hadoop QA commented on RATIS-167:
---------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  1m 
26s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m  
0s{color} | {color:blue} Findbugs executables are not available. {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 4 new or modified test 
files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  1m  
7s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 
58s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
42s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
18s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
37s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m  
5s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
46s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
43s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
43s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
0m 14s{color} | {color:orange} root: The patch generated 37 new + 30 unchanged 
- 0 fixed = 67 total (was 30) {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} javadoc {color} | {color:green}  0m 
31s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  6m 48s{color} 
| {color:red} root in the patch failed. {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} 15m 39s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | ratis.server.simulation.TestRaftWithSimulatedRpc |
|   | ratis.server.simulation.TestRetryCacheWithSimulatedRpc |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/ratis:date2018-09-21 
|
| JIRA Issue | RATIS-167 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12940845/r167_20180921.patch |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  checkstyle  
compile  |
| uname | Linux def7b0af226a 3.13.0-139-generic #188-Ubuntu SMP Tue Jan 9 
14:43:09 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | 
/home/jenkins/jenkins-slave/workspace/PreCommit-RATIS-Build/yetus-personality.sh
 |
| git revision | master / 3b9d50d |
| Default Java | 1.8.0_181 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-RATIS-Build/357/artifact/out/diff-checkstyle-root.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-RATIS-Build/357/artifact/out/patch-unit-root.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-RATIS-Build/357/testReport/ |
| modules | C: ratis-client ratis-server ratis-grpc U: . |
| Console output | 
https://builds.apache.org/job/PreCommit-RATIS-Build/357/console |
| Powered by | Apache Yetus 0.5.0   http://yetus.apache.org |


This message was automatically generated.



> Implement a high performance OutputStream using async API
> ---------------------------------------------------------
>
>                 Key: RATIS-167
>                 URL: https://issues.apache.org/jira/browse/RATIS-167
>             Project: Ratis
>          Issue Type: New Feature
>          Components: client
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Tsz Wo Nicholas Sze
>            Priority: Major
>              Labels: ozone
>         Attachments: r167_20180921.patch
>
>
> With an in-order async API, it is easy to implement a high performance 
> OutputStream.
> Also, since the async API already takes care leader change, the OutputStream 
> implementation supports automatic failover for free.
> The code is generic in the sense that it is RPC independent (as long as the 
> RPC supports in-order async API).



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