[ 
https://issues.apache.org/jira/browse/YARN-4219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14958083#comment-14958083
 ] 

Hadoop QA commented on YARN-4219:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  16m 39s | Pre-patch trunk compilation is 
healthy. |
| {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 2 new or modified test files. |
| {color:red}-1{color} | javac |   8m 10s | The applied patch generated  2  
additional warning messages. |
| {color:green}+1{color} | javadoc |  10m 26s | There were no new javadoc 
warning messages. |
| {color:red}-1{color} | release audit |   0m 19s | The applied patch generated 
1 release audit warnings. |
| {color:red}-1{color} | checkstyle |   0m 30s | The applied patch generated  
15 new checkstyle issues (total was 59, now 74). |
| {color:green}+1{color} | whitespace |   0m  0s | The patch has no lines that 
end in whitespace. |
| {color:green}+1{color} | install |   1m 32s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 34s | The patch built with 
eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   1m  2s | The patch does not introduce 
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | yarn tests |   3m 31s | Tests passed in 
hadoop-yarn-server-applicationhistoryservice. |
| | |  42m 47s | |
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|| Subsystem || Report/Notes ||
| Patch URL | 
http://issues.apache.org/jira/secure/attachment/12766656/YARN-4219-trunk.001.patch
 |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / be7a0ad |
| javac | 
https://builds.apache.org/job/PreCommit-YARN-Build/9447/artifact/patchprocess/diffJavacWarnings.txt
 |
| Release Audit | 
https://builds.apache.org/job/PreCommit-YARN-Build/9447/artifact/patchprocess/patchReleaseAuditProblems.txt
 |
| checkstyle |  
https://builds.apache.org/job/PreCommit-YARN-Build/9447/artifact/patchprocess/diffcheckstylehadoop-yarn-server-applicationhistoryservice.txt
 |
| hadoop-yarn-server-applicationhistoryservice test log | 
https://builds.apache.org/job/PreCommit-YARN-Build/9447/artifact/patchprocess/testrun_hadoop-yarn-server-applicationhistoryservice.txt
 |
| Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/9447/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf906.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-YARN-Build/9447/console |


This message was automatically generated.

> New levelDB cache storage for timeline v1.5
> -------------------------------------------
>
>                 Key: YARN-4219
>                 URL: https://issues.apache.org/jira/browse/YARN-4219
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Li Lu
>            Assignee: Li Lu
>         Attachments: YARN-4219-trunk.001.patch
>
>
> We need to have an "offline" caching storage for timeline server v1.5 after 
> the changes in YARN-3942. The in memory timeline storage may run into OOM 
> issues when used as a cache storage for entity file timeline storage. We can 
> refactor the code and have a level db based caching storage for this use 
> case. 



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