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https://issues.apache.org/jira/browse/HDFS-9518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16445910#comment-16445910
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genericqa commented on HDFS-9518:
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| (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 
32s{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 1 new or modified test 
files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 22m 
58s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
34s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
17s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
36s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green}  
9m 18s{color} | {color:green} branch has no errors when building and testing 
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 
28s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
21s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
35s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
31s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
31s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
13s{color} | {color:green} hadoop-hdfs-project/hadoop-hdfs-client: The patch 
generated 0 new + 8 unchanged - 15 fixed = 8 total (was 23) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
32s{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} shadedclient {color} | {color:green}  
9m 28s{color} | {color:green} patch has no errors when building and testing our 
client artifacts. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  1m 
34s{color} | {color:red} hadoop-hdfs-project/hadoop-hdfs-client generated 1 new 
+ 0 unchanged - 0 fixed = 1 total (was 0) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
21s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  1m 
20s{color} | {color:green} hadoop-hdfs-client in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
18s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 51m 18s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:hadoop-hdfs-project/hadoop-hdfs-client |
|  |  org.apache.hadoop.hdfs.client.impl.LeaseRenewer.renew() makes inefficient 
use of keySet iterator instead of entrySet iterator  At 
LeaseRenewer.java:keySet iterator instead of entrySet iterator  At 
LeaseRenewer.java:[line 396] |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:8620d2b |
| JIRA Issue | HDFS-9518 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12920027/HDFS-9518.3.patch |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  shadedclient  findbugs  checkstyle  |
| uname | Linux 2c094b9cce1b 4.4.0-64-generic #85-Ubuntu SMP Mon Feb 20 
11:50:30 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 860cc28 |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_162 |
| findbugs | v3.1.0-RC1 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HDFS-Build/24017/artifact/out/new-findbugs-hadoop-hdfs-project_hadoop-hdfs-client.html
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/24017/testReport/ |
| Max. process+thread count | 441 (vs. ulimit of 10000) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs-client U: 
hadoop-hdfs-project/hadoop-hdfs-client |
| Console output | 
https://builds.apache.org/job/PreCommit-HDFS-Build/24017/console |
| Powered by | Apache Yetus 0.8.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> LeaseRenewer - Improve Renew Method
> -----------------------------------
>
>                 Key: HDFS-9518
>                 URL: https://issues.apache.org/jira/browse/HDFS-9518
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs-client
>            Reporter: BELUGA BEHR
>            Assignee: BELUGA BEHR
>            Priority: Minor
>         Attachments: HDFS-9518.2.patch, HDFS-9518.3.patch, LeaseRenewer.patch
>
>
> Replaced the current implementation of 
> org.apache.hadoop.hdfs.client.impl.LeaseRenewer#renew()



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