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https://issues.apache.org/jira/browse/MAPREDUCE-3970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13230131#comment-13230131
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Hudson commented on MAPREDUCE-3970:
-----------------------------------

Integrated in Hadoop-Hdfs-0.23-Build #198 (See 
[https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/198/])
    MAPREDUCE-3970 ServiceOperations class (Revision 1300901)
MAPREDUCE-3970 ServiceOperations class (Revision 1300891)

     Result = UNSTABLE
stevel : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1300901
Files : 
* 
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/service/ServiceOperations.java
* 
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/service/TestServiceOperations.java

stevel : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1300891
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
* 
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/service/AbstractService.java
* 
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/service/ServiceAssert.java
* 
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/service/TestServiceLifecycle.java

                
> Add ServiceOperations class to aid working with Services
> --------------------------------------------------------
>
>                 Key: MAPREDUCE-3970
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3970
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: mrv2
>    Affects Versions: 0.23.1, 0.24.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>             Fix For: 0.24.0, 0.23.3
>
>         Attachments: MAPREDUCE-3970.patch, MAPREDUCE-3970.patch
>
>
> Add Helper methods to move things through lifecycles. init->start is common, 
> stop-if-service!=null another. Some static methods can execute these, and 
> even call stop() if init() raises an exception. These could go into a class 
> ServiceOps in the same package. These can be used by those services that wrap 
> other services, and help manage more robust shutdowns.

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