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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2518) Support in-process container executor
Date Mon, 08 Sep 2014 18:09:29 GMT

    [ https://issues.apache.org/jira/browse/YARN-2518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14125838#comment-14125838
] 

Allen Wittenauer commented on YARN-2518:
----------------------------------------

Sorry, I wasn't clear:  if this feature goes in, it must fail the nodemanager process if security
is enabled due to running tasks as the yarn user being extremely insecure.

> Support in-process container executor
> -------------------------------------
>
>                 Key: YARN-2518
>                 URL: https://issues.apache.org/jira/browse/YARN-2518
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: nodemanager
>    Affects Versions: 2.5.0
>         Environment: Linux, Windows
>            Reporter: BoYang
>            Priority: Minor
>              Labels: container, dispatch, in-process, job, node
>
> Node Manage always creates a new process for a new application. We have hit a scenario
where we want the node manager to execute the application inside its own process, so we get
fast response time. It would be nice if Node Manager or YARN can provide native support for
that.
> In general, the scenario is that we have a long running process which can accept requests
and process the requests inside its own process. Since YARN is good at scheduling jobs, we
want to use YARN to dispatch jobs (e.g. requests in JSON) to the long running process. In
that case, we do not want YARN container to spin up a new process for each request. Instead,
we want YARN container to send the request to the long running process for further processing.



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