[ 
https://issues.apache.org/jira/browse/YARN-2944?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14244941#comment-14244941
 ] 

Hadoop QA commented on YARN-2944:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest 
attachment 
  
http://issues.apache.org/jira/secure/attachment/12686961/YARN-2944-trunk-v2.patch
  against trunk revision 46612c7.

    {color:green}+1 @author{color}.  The patch does not contain any @author 
tags.

    {color:green}+1 tests included{color}.  The patch appears to include 4 new 
or modified test files.

      {color:red}-1 javac{color}.  The applied patch generated 1217 javac 
compiler warnings (more than the trunk's current 155 warnings).

    {color:red}-1 javadoc{color}.  The javadoc tool appears to have generated 
49 warning messages.
        See 
https://builds.apache.org/job/PreCommit-YARN-Build/6107//artifact/patchprocess/diffJavadocWarnings.txt
 for details.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with 
eclipse:eclipse.

    {color:red}-1 findbugs{color}.  The patch appears to introduce 25 new 
Findbugs (version 2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase 
the total number of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-sharedcachemanager.

Test results: 
https://builds.apache.org/job/PreCommit-YARN-Build/6107//testReport/
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-YARN-Build/6107//artifact/patchprocess/newPatchFindbugsWarningshadoop-yarn-common.html
Javac warnings: 
https://builds.apache.org/job/PreCommit-YARN-Build/6107//artifact/patchprocess/diffJavacWarnings.txt
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/6107//console

This message is automatically generated.

> SCMStore/InMemorySCMStore is not currently compatible with 
> ReflectionUtils#newInstance
> --------------------------------------------------------------------------------------
>
>                 Key: YARN-2944
>                 URL: https://issues.apache.org/jira/browse/YARN-2944
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Chris Trezzo
>            Assignee: Chris Trezzo
>            Priority: Minor
>         Attachments: YARN-2944-trunk-v1.patch, YARN-2944-trunk-v2.patch
>
>
> Currently the Shared Cache Manager uses ReflectionUtils#newInstance to create 
> the SCMStore service. Unfortunately the SCMStore class does not have a 
> 0-argument constructor.
> On startup, the SCM fails with the following:
> {noformat}
> 14/12/09 16:10:53 INFO service.AbstractService: Service SharedCacheManager 
> failed in state INITED; cause: java.lang.RuntimeException: 
> java.lang.NoSuchMethodException: 
> org.apache.hadoop.yarn.server.sharedcachemanager.store.InMemorySCMStore.<init>()
> java.lang.RuntimeException: java.lang.NoSuchMethodException: 
> org.apache.hadoop.yarn.server.sharedcachemanager.store.InMemorySCMStore.<init>()
>         at 
> org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:131)
>         at 
> org.apache.hadoop.yarn.server.sharedcachemanager.SharedCacheManager.createSCMStoreService(SharedCacheManager.java:103)
>         at 
> org.apache.hadoop.yarn.server.sharedcachemanager.SharedCacheManager.serviceInit(SharedCacheManager.java:65)
>         at 
> org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
>         at 
> org.apache.hadoop.yarn.server.sharedcachemanager.SharedCacheManager.main(SharedCacheManager.java:156)
> Caused by: java.lang.NoSuchMethodException: 
> org.apache.hadoop.yarn.server.sharedcachemanager.store.InMemorySCMStore.<init>()
>         at java.lang.Class.getConstructor0(Class.java:2763)
>         at java.lang.Class.getDeclaredConstructor(Class.java:2021)
>         at 
> org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:125)
>         ... 4 more
> 14/12/09 16:10:53 FATAL sharedcachemanager.SharedCacheManager: Error starting 
> SharedCacheManager
> java.lang.RuntimeException: java.lang.NoSuchMethodException: 
> org.apache.hadoop.yarn.server.sharedcachemanager.store.InMemorySCMStore.<init>()
>         at 
> org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:131)
>         at 
> org.apache.hadoop.yarn.server.sharedcachemanager.SharedCacheManager.createSCMStoreService(SharedCacheManager.java:103)
>         at 
> org.apache.hadoop.yarn.server.sharedcachemanager.SharedCacheManager.serviceInit(SharedCacheManager.java:65)
>         at 
> org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
>         at 
> org.apache.hadoop.yarn.server.sharedcachemanager.SharedCacheManager.main(SharedCacheManager.java:156)
> Caused by: java.lang.NoSuchMethodException: 
> org.apache.hadoop.yarn.server.sharedcachemanager.store.InMemorySCMStore.<init>()
>         at java.lang.Class.getConstructor0(Class.java:2763)
>         at java.lang.Class.getDeclaredConstructor(Class.java:2021)
>         at 
> org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:125)
>         ... 4 more
> {noformat}
> This JIRA is to add a 0-argument constructor to SCMStore.



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