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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-2749) [MR-279] NM registers with RM even before it starts various servers
Date Fri, 09 Sep 2011 17:53:09 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2749?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vinod Kumar Vavilapalli updated MAPREDUCE-2749:
-----------------------------------------------

    Status: Open  (was: Patch Available)

The patch looks good overall. But it needs a minor update because of MAPREDUCE-2864, TestNMRegistration
has a minor compilation issue - YarnRPC.RPC_CLASSNAME has moved.

Also, I am suspecting that TestNMRegistration can be simplified a lot with mock objects. Changes
to MiniYARNCluster also look hacky, to pass in the sleep interval. Please investigate if we
can leverage mock objects, I'll do too. If we don't make progress in a day or two, I'll push
the current code itself. Thanks!

> [MR-279] NM registers with RM even before it starts various servers
> -------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2749
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2749
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Vinod Kumar Vavilapalli
>            Assignee: Thomas Graves
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-2749-v2.patch, MAPREDUCE-2749-v3.patch, MAPREDUCE-2749-v4.patch,
MAPREDUCE-2749.patch
>
>
> In case NM eventually fails to start the ContainerManager server because of say a port
clash, RM will have to wait for expiry to detect the NM crash.
> It is desirable to make NM register with RM only after it can start all of its components
successfully.

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