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https://issues.apache.org/jira/browse/HADOOP-15901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17358580#comment-17358580
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Hadoop QA commented on HADOOP-15901:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime ||  Logfile || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m  
0s{color} | {color:blue}{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red}  0m  9s{color} 
| {color:red}{color} | {color:red} HADOOP-15901 does not apply to trunk. Rebase 
required? Wrong Branch? See https://wiki.apache.org/hadoop/HowToContribute for 
help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Issue | HADOOP-15901 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12946889/HADOOP-15901-01.patch 
|
| Console output | 
https://ci-hadoop.apache.org/job/PreCommit-HADOOP-Build/195/console |
| versions | git=2.17.1 |
| Powered by | Apache Yetus 0.13.0-SNAPSHOT https://yetus.apache.org |


This message was automatically generated.



> IPC Client and Server should use Time.monotonicNow() for elapsed times.
> -----------------------------------------------------------------------
>
>                 Key: HADOOP-15901
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15901
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ipc, metrics
>            Reporter: Vinayakumar B
>            Assignee: Vinayakumar B
>            Priority: Major
>         Attachments: HADOOP-15901-01.patch
>
>
> Client.java and Server.java  uses {{Time.now()}} to calculate the elapsed 
> times/timeouts. This could result in undesired results when system clock's 
> time changes.
> {{Time.monotonicNow()}} should be used for elapsed time calculations within 
> same JVM.
>  



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