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https://issues.apache.org/jira/browse/HADOOP-14660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16109337#comment-16109337
 ] 

Hadoop QA commented on HADOOP-14660:
------------------------------------

| (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 
17s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {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: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} trunk Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
17s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 15m 
23s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 16m  
6s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  2m 
 8s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  2m  
7s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m 
19s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
15s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
19s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 
12s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 12m 
53s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 12m 
53s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  2m 
15s{color} | {color:green} root: The patch generated 0 new + 16 unchanged - 28 
fixed = 16 total (was 44) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  2m 
15s{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 
32s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
24s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  8m  7s{color} 
| {color:red} hadoop-common in the patch failed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  2m 
24s{color} | {color:green} hadoop-azure in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
33s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 95m 31s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.security.TestKDiag |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:14b5c93 |
| JIRA Issue | HADOOP-14660 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12879850/HADOOP-14660-010.patch
 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  findbugs  checkstyle  |
| uname | Linux 6add7e6ff905 3.13.0-117-generic #164-Ubuntu SMP Fri Apr 7 
11:05:26 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh 
|
| git revision | trunk / b38a1ee |
| Default Java | 1.8.0_131 |
| findbugs | v3.1.0-RC1 |
| unit | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/12914/artifact/patchprocess/patch-unit-hadoop-common-project_hadoop-common.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/12914/testReport/ |
| modules | C: hadoop-common-project/hadoop-common hadoop-tools/hadoop-azure U: 
. |
| Console output | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/12914/console |
| Powered by | Apache Yetus 0.6.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> wasb: improve throughput by 34% when account limit exceeded
> -----------------------------------------------------------
>
>                 Key: HADOOP-14660
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14660
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs/azure
>            Reporter: Thomas Marquardt
>            Assignee: Thomas Marquardt
>         Attachments: HADOOP-14660-001.patch, HADOOP-14660-002.patch, 
> HADOOP-14660-003.patch, HADOOP-14660-004.patch, HADOOP-14660-005.patch, 
> HADOOP-14660-006.patch, HADOOP-14660-007.patch, HADOOP-14660-008.patch, 
> HADOOP-14660-010.patch
>
>
> Big data workloads frequently exceed the Azure Storage max ingress and egress 
> limits 
> (https://docs.microsoft.com/en-us/azure/azure-subscription-service-limits).  
> For example, the max ingress limit for a GRS account in the United States is 
> currently 10 Gbps.  When the limit is exceeded, the Azure Storage service 
> fails a percentage of incoming requests, and this causes the client to 
> initiate the retry policy.  The retry policy delays requests by sleeping, but 
> the sleep duration is independent of the client throughput and account limit. 
>  This results in low throughput, due to the high number of failed requests 
> and thrashing causes by the retry policy.
> To fix this, we introduce a client-side throttle which minimizes failed 
> requests and maximizes throughput.  Tests have shown that this improves 
> throughtput by ~34% when the storage account max ingress and/or egress limits 
> are exceeded. 



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