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https://issues.apache.org/jira/browse/HADOOP-11398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14627296#comment-14627296
 ] 

Hadoop QA commented on HADOOP-11398:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | pre-patch |  15m 18s | Findbugs (version ) appears to 
be broken on trunk. |
| {color:green}+1{color} | @author |   0m  0s | The patch does not contain any 
@author tags. |
| {color:green}+1{color} | tests included |   0m  0s | The patch appears to 
include 3 new or modified test files. |
| {color:green}+1{color} | javac |   7m 42s | There were no new javac warning 
messages. |
| {color:green}+1{color} | javadoc |   9m 44s | There were no new javadoc 
warning messages. |
| {color:green}+1{color} | release audit |   0m 22s | The applied patch does 
not increase the total number of release audit warnings. |
| {color:green}+1{color} | checkstyle |   0m 39s | There were no new checkstyle 
issues. |
| {color:red}-1{color} | whitespace |   0m  0s | The patch has 1  line(s) that 
end in whitespace. Use git apply --whitespace=fix. |
| {color:green}+1{color} | install |   1m 21s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with 
eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   1m 52s | The patch does not introduce 
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | common tests |  22m 19s | Tests passed in 
hadoop-common. |
| | |  59m 54s | |
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|| Subsystem || Report/Notes ||
| Patch URL | 
http://issues.apache.org/jira/secure/attachment/12745345/HADOOP-11398.003.patch 
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 0a16ee6 |
| whitespace | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/7279/artifact/patchprocess/whitespace.txt
 |
| hadoop-common test log | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/7279/artifact/patchprocess/testrun_hadoop-common.txt
 |
| Test Results | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/7279/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf901.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP 
PREEMPT Wed Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Console output | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/7279/console |


This message was automatically generated.

> RetryUpToMaximumTimeWithFixedSleep needs to behave more accurately
> ------------------------------------------------------------------
>
>                 Key: HADOOP-11398
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11398
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Li Lu
>            Assignee: Li Lu
>         Attachments: HADOOP-11398-121114.patch, HADOOP-11398.002.patch, 
> HADOOP-11398.003.patch
>
>
> RetryUpToMaximumTimeWithFixedSleep now inherits 
> RetryUpToMaximumCountWithFixedSleep and just acts as a wrapper to decide 
> maxRetries. The current implementation uses (maxTime / sleepTime) as the 
> number of maxRetries. This is fine if the actual for each retry is 
> significantly less than the sleep time, but it becomes less accurate if each 
> retry takes comparable amount of time as the sleep time. The problem gets 
> worse when there are underlying retries. 
> We may want to use timers inside RetryUpToMaximumTimeWithFixedSleep to 
> perform accurate timing. 



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