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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-530) Define Service model strictly, implement AbstractService for robust subclassing, migrate yarn-common services
Date Tue, 04 Jun 2013 23:05:20 GMT

     [ https://issues.apache.org/jira/browse/YARN-530?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steve Loughran updated YARN-530:
--------------------------------

    Attachment: YARN-530-019.patch

# make sure addService, removeService and service iteration are all thread safe -eliminates
risk of concurrency problems if the service list is changed during init/start/stop of children.
As these methods are protected, a subclass would have to do this in another thread -or make
the methods public
# composite service policy is switched to stop all services that are STARTED or INITED
                
> Define Service model strictly, implement AbstractService for robust subclassing, migrate
yarn-common services
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-530
>                 URL: https://issues.apache.org/jira/browse/YARN-530
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>    Affects Versions: 2.0.4-alpha
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>         Attachments: YARN-117-019.patch, YARN-117changes.pdf, YARN-530-005.patch, YARN-530-008.patch,
YARN-530-009.patch, YARN-530-010.patch, YARN-530-011.patch, YARN-530-012.patch, YARN-530-013.patch,
YARN-530-014.patch, YARN-530-015.patch, YARN-530-016.patch, YARN-530-017.patch, YARN-530-018.patch,
YARN-530-019.patch, YARN-530-2.patch, YARN-530-3.patch, YARN-530.4.patch, YARN-530.patch
>
>
> # Extend the YARN {{Service}} interface as discussed in YARN-117
> # Implement the changes in {{AbstractService}} and {{FilterService}}.
> # Migrate all services in yarn-common to the more robust service model, test.

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